FORM 2
THE PATENTS ACT, 1970
(39 of 1970) &
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION (See section 10, rule 13) 1. Title of the invention: RUBBER COMPOSITION AND IMPLEMENTATIONS THEREOF
2. Applicant(s)
NAME NATIONALITY ADDRESS
CEAT LIMITED Indian RPG HOUSE, 463, Dr. Annie Besant
Road, Worli, Mumbai 400 030, India
3. Preamble to the description
COMPLETE SPECIFICATION
The following specification particularly describes the invention and the manner in which it
is to be performed.

FIELD OF THE INVENTION
[0001] The present disclosure relates to a rubber composition for tire and a tire composition
using the rubber composition thereof. In particular, it relates to a rubber composition for tire
comprising natural rubber based polymer, polybutadiene polymer and styrene butadiene
polymer; a reinforcing filler; and a process aid. More particularly, a rubber composition for the
manufacture of tire with reduced rolling resistance, improved abrasion resistance and improved
traction.
BACKGROUND OF THE INVENTION
[0002] A tire is a cord-rubber composite of complex elastomer formulation, reinforcing fibers, textiles and steel cord. It is geometrically torus, mechanically flexible pressure container, structurally high performance composite and chemically consists of long chain macro molecules. Tire being a flexible toroidal compressed gas container mechanically arranged to the outer circumference or rim of a vehicle wheel, allows the tire of the vehicle to stick to the road surface and to travel over the ground with more ease.
[0003] Tire is the only contact part between the vehicle and the ground and it absorbs the shock while a vehicle in movement. The performance of a tire can be majorly measured based on three parameters, i.e., rolling resistance, traction and wear resistance. The set of these three parameters are referred as magic triangle in the tire industry. Manufacture of tires with superior quality require alignment of all the three parameters within the allowable ranges. However, improving one or more parameters without losing control on others is difficult with the conventional rubber compositions and adapting rubber compounding techniques. Therefore, there is a need in the art to formulate a composition for pneumatic tires that meets all the three parameters within the optimal range.
[0004] The modern tires must meet performance standards which require a broad range of desirable properties. Rubber compositions suitable for tire should exhibit not only desirable strength and elongation, but also good cracking resistance, good abrasion resistance, desirable skid resistance and low tan { (delta) values at low frequencies for desirable rolling resistance. Additionally, a high complex dynamic modulus is necessary for manoeuvrability and steering control.
[0005] IN3321/CHE/2011 discloses rubber compositions for motorcycle tire with low fuel consumption and high breaking performance. The rubber composition containing natural rubber, Nipol® NS116 and Nipol® NS616 solution styrene butadiene rubber, butadiene rubber as rubber components and silica or carbon black as filler material.

[0006] IN1007/CHE/2013 describes a tire composition for motorcycle tire with low rolling resistance and rigidity feeling while turning a motorcycle. The rubber composition containing natural rubber, Nipol® NS116R and Nipol® NS616 solution styrene butadiene rubber, butadiene rubber as rubber components and silica or carbon black as filler material. [0007] IN6190/CHE/2015 aims to a motorcycle tire that decreases the fuel consumption and improved steering stability. The rubber composition comprising natural rubber, solution/ emulsion styrene butadiene rubber, poly butadiene rubber and silica and/or carbon black. [0008] The prior art compositions and processes suffer from one or more drawbacks, such as low wear resistance, high hysteresis, low breaking performance, low rigidity feeling when turning result in manufacturing of suboptimal quality of tires.
[0009] Therefore, there is a need to provide new rubber compositions and processes for manufacture of pneumatic tires with adequate grip, low rolling resistance and improved life time of tires.
SUMMARY OF THE INVENTION
[0010] In an aspect, the present disclosure there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid. [0011] In an aspect, the present disclosure there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tan δ value in range of 0.183-0.200 at a temperature of 60°C.
[0012] In another aspect, the present disclosure there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value is in range of 0.050-.,0.200 at a temperature of 60°C.
[0013] In another aspect of the present disclosure, there is provided a process of preparing the rubber composition, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid to obtain a first mixture; (b) curing the first

mixture with at least one curing agent and at least one curing accelerator to obtain the tire composition.
[0014] In an aspect of the present disclosure, there is provided a tire composition for two-wheeler having a value of loss tangent tanδ in a range of 0.183-0.200 at a temperature of 60 °C.
[0015] In an aspect of the present disclosure, there is provided a tire composition for three-wheeler having a value of loss tangent tan δ in a range 0.050 - 0.200 at a temperature of 60 °C.
[0016] In an aspect of the present disclosure, there is provided a rubber composition for two-wheeler having a value of loss tangent tan δ in a range of 0.183-0.200 at a temperature of 60°C.
[0017] In an aspect of the present disclosure, there is provided a rubber composition for three-wheeler having rolling resistance with tan δ in a range of 0.050.-0.200 at a temperature of 60°C.
[0018] These and other features, aspects, and advantages of the present subject matter will be better understood with reference to the following description and appended claims. This summary is provided to introduce a selection of concepts in a simplified form. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
DETAILED DESCRIPTION OF THE INVENTION
[0019] Those skilled in the art will be aware that the present disclosure is subject to variations
and modifications other than those specifically described. It is to be understood that the present
disclosure includes all such variations and modifications. The disclosure also includes all such
steps, features, compositions and compounds referred to or indicated in this specification,
individually or collectively, and any and all combinations of any or more of such steps or
features.
DEFINITIONS
[0020] For convenience, before further description of the present disclosure, certain terms
employed in the specification, and examples are delineated here. These definitions should be
read in the light of the remainder of the disclosure and understood as by a person of skill in the
art. The terms used herein have the meanings recognized and known to those of skill in the art,
however, for convenience and completeness, particular terms and their meanings are set forth
below.

[0021] The article "a","an","the" are used to refer to one or to more than one (i.e., to at
least one) of the grammatical object of the article.
[0022]The terms "comprise" and "comprising" are used in the inclusive, open sense, meaning
that additional elements may be included. It is not intended to be construed as "consists of
only"
[0023] Throughout this specification, unless the context requires otherwise the word
"comprise", and variations such as "comprises" and "comprising" will be understood to imply
the inclusion of a stated element or step or group of element or steps but not the exclusion of
any other element or step or group of element or steps.
[0024] The term "including" is used to mean "including but not limited to". "Including" and
"including but not limited to" are used interchangeably.
[0025] Ratios, concentrations, amounts, and other numerical data may be presented herein in
a range format. It is to be understood that such range format is used merely for convenience
and brevity and should be interpreted flexibly to include not only the numerical values
explicitly recited as the limits of the range, but also to include all the individual numerical
values or sub-ranges encompassed within that range as if each numerical value and sub-range
is explicitly recited. For example, a temperature range of about 150-170°C should be
interpreted to include not only the explicitty recited limits of about 150°C to about 170°C, but
also to include sub-ranges, such as 150-165°C, 160-170°C, and so forth, as well as individual
amounts, including fractional amounts, within the specified ranges, such as 150.2°C, and 165.5
°C, for example.
[0026] The term "at least one" is used to mean one or more and thus includes individual
components as well as mixtures/combinations.
[0027] For the purposes of the p[resent disclosure, the term "phr" refers to parts per hundred
rubber, it is a unit well used in the field of rubber technology to define the amount of ingredients
used.
[0028] Unless defined otherwise, all technical and scientific terms used herein have the same
meaning as commonly understood by one of ordinary skill in the art to which this disclosure
belongs. Although any methods and materials similar or equivalent to those described herein
can be used in the practice or testing of the disclosure, the preferred methods, and materials are
now described. All publications mentioned herein are incorporated herein by reference.
[0029] The present disclosure is not to be limited in scope by the specific embodiments
described herein, which are intended for the purposes of exemplification only. Functionally-

equivalent products, compositions, and methods are clearly within the scope of the disclosure, as described herein.
[0030] Addressing the need of the hour to provide rubber composition/tire composition and processes for the manufacture of pneumatic tires with adequate grip, low rolling resistance and improved life time of tires, the present disclosure discloses a rubber composition comprising 20 - 45 phr of at least one natural rubber based polymer; 20 - 45 phr of at least one polybutadiene polymer; 10 - 60 phr of at least one styrene butadiene polymer; 40 - 85 phr of at least one reinforcing filler; and 5 - 25 phr of at least one process aid. The composition of the present disclosure provides a solution in terms of providing a rubber composition for the manufacture of tire with reduced rolling resistance, improved abrasion resistance and improved traction. Further, the disclosure identifies the criticality of rubber/tire compositions by providing the specific phr ranges of the ingredients can be used in the composition. The rubber component and the carbon black are the essential ingredients to arrive at the rubber composition for tire which results in high resilience, low rolling resistance, high mileage, and high grip properties. The specific carbon black used in the composition not only imparts strength to the tire but also aids in reduction of rolling resistance.
[0031] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid. [0032] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value of 0.195 at of 0.183-0.200 at tempreture of 60°C.
[0033] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value of 0.195 at a tempreture of 60°C
[0034] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -

45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0.200 at a tempreture of 60°C.

[0035] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value of 0.159 at a tempreture of 60°C..
[0036] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value of 0.165 at a tempreture of 60°C.
[0037] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the composition has a Lambourn wear index value in the range of 175 -300. [0038] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the composition has a Lambourn wear index value in the range of 175 - 225. [0039] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-.,0.. Tg T gX`cXeTgheX bY 4. Ñ* TaW [as a Lambourn wear index value in the range of 175 -300.

[0040] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-0200at a tempreture of 60°C, has a Lambourn wear index value in the range of 175 - 225.
[0041] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0..200 at a tempreture of 60°C, and has a Lambourn wear index value in the range of 175 - 300.
[0042] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0.200.at a tempreture of 60°C, and has a Lambourn wear index value in the range of 175 - 225.
[0043] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof.
[0044] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil,

and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-0.200at a tempreture of 60°C.

[0045] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-.,0200at a tempreture of 60°C.
[0046] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the composition has a Lambourn wear index value in the range of 175 - 300.
[0047] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the composition has a Lambourn wear index value in the range of 175 - 225.
[0048] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ

value in a range of 0.183-.,0.. Tg T gX`cXeTgheX bY 4. Ñ TaW [Tf a Lambourn wear index value in the range of 175 - 300.
[0049] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-.,0.. Tg T gX`cXeTgheX bY 4. Ñ TaW [Tf a Lambourn wear index value in the range of 175 - 225.
[0050] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-.,0.. Tg T gX`cXeTgheX bY 4. Ñ TaW [Tf a Lambourn wear index value in the range of 175 - 300.
[0051] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-.,0.. Tg T gX`cXeTgheX bY 4. Ñ TaW [Tf a Lambourn wear index value in the range of 175 - 225.
[0052] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator,

0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof. [0053] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ in a range of 0.183-0.200 at .a tempreture of 60°C.
[0054] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0.200 at a tempreture of 60°C.
[0055] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler is carbon black having a BET surface area in a range of 50 - 200 square meters per gram; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof.
[0056] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler is carbon black having a BET surface area in a range of 50 - 200 square meters per gram; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin,

alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combination thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-0.200 at a tempreture of 60°C.
[0057] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of ribbed smoked sheet; (b) 20 - 45 phr of neodymium catalyst; (c) 10 - 60 phr of solution polymerized styrene butadiene rubber; (d) 40 - 85 phr of at least one reinforcing filler is carbon black, having a BET surface area in a range of 50 - 200 square meters per gram; and (e) 5 - 25 phr of at least one process aid selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combination thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0.200 at a tempreture of 60°C.
[0058] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler is carbon black having a BET surface area in a range of 50 - 200 square meters per gram; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof. [0059] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler is carbon black having a BET surface area in a range of 50 - 200 square meters per gram; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in range of 0.183-0.200 at a tempreture of 60°C.
[0060] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler is carbon black thereof having a BET

surface area in a range of 50 - 200 square meters per gram; (e) 5 - 25 phr of at least one process aid; (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a range of 0.050-0.200 at a tempreture of 60°C.

[0061] In an embodiment of the present disclosure, there is provided a rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator selected from the group consisting of zinc oxide, stearic acid, and combinations thereof, 0-4 phr of at least one antioxidant selected from the group consisting of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylendiamine (6PPD), 2,2,4-trimethyl-l,2-dihydroquinoline (TQ), and combinations thereof, 1.5 p 2.5 phr of at least one antiozonant is microcrystalline wax, 1.5 p 2.5 phr of at least one curing agent selected from the group consisting of sulfur, sulfur donors, and combinations thereof, 0 p 1.6 phr of at least one curing accelerator selected from the group consisting of tetra methyl thiuram monosulphide (TMTM), N-tertiary butyl-2-benzothiazole sulphenamides (TBBS), N-cyclohexyl-2-benzothiazole sulfenamide (CBS), and combinations thereof.
[0062] In an embodiment of the present disclosure, there is provided a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator selected from the group consisting of zinc oxide, stearic acid, and combinations thereof, 0-4 phr of at least one antioxidant selected from the group consisting of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylendiamine (6PPD), 2,2,4-trimethyl-l,2-dihydroquinoline (TQ), and combinations thereof, 1.5 p 2.5 phr of at least one antiozonant is microcrystalline wax, 1.5 p 2.5 phr of at least one curing agent selected from the group consisting of sulfur, sulfur donors, and combinations thereof, 0 p 1.6 phr of at least one curing accelerator selected from the group consisting of tetra methyl thiuram monosulphide (TMTM), N-tertiary butyl-2-benzothiazole sulphenamides (TBBS), N-cyclohexyl-2-benzothiazole sulfenamide (CBS), and

combination thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-0.200 at a tempreture of 60°C.

[0063] In an embodiment of the present disclosure, there is provided a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 -45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator selected from the group consisting of zinc oxide, stearic acid, and combinations thereof, 0-4 phr of at least one antioxidant selected from the group consisting of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylendiamine (6PPD), 2,2,4-trimethyl-l,2-dihydroquinoline (TQ), and combinations thereof, 1.5 p 2.5 phr of at least one antiozonant is microcrystalline wax, 1.5 p 2.5 phr of at least one curing agent selected from the group consisting of sulfur, sulfur donors, and combinations thereof, 0 p 1.6 phr of at least one curing accelerator selected from the group consisting of tetra methyl thiuram monosulphide (TMTM), N-tertiary butyl-2-benzothiazole sulphenamides (TBBS), N-cyclohexyl-2-benzothiazole sulfenamide (CBS), and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0.200 at a tempreture of 60°C.

[0064] In an embodiment of the present disclosure, there is provided a process of preparing the rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid to obtain a first mixture; (b) curing the first mixture with at least one curing agent and at least one curing accelerator to obtain the composition.
[0065] In an embodiment of the present disclosure, there is provided a process of preparing two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire combination has a rolling resistance with a tanδ value value in a range of 0.183-0.200 at a tempreture of 60°C, the process comprising: (a) contacting
at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid to obtain

a first mixture; (b) curing the first mixture with at least one curing agent and at least one curing accelerator to obtain the two-wheeler tire composition..
[0066] In an embodiment of the present disclosure, there is provided a process of preparing a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value value in a range of 0.050-0.200 at a tempreture of 60°C, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid to obtain a first mixture; (b) curing the first mixture with at least one curing agent and at least one curing accelerator to obtain the three wheeler tire composition.
[0067] In an embodiment of the present disclosure, there is provided a process of preparing the rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid is carried out at a temperature in the range of 150°C -170°C to obtain a first mixture; (b) curing the first mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the composition.
[0068] In an embodiment of the present disclosure, there is provided a process of preparing two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value value in a range of 0.183-0.200 at a tempreture of 60°C,t the process comprising:(a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid is carried out at a temperature in the range of 150°C -170°C to obtain a first mixture; (b) curing the first mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the two-wheeler tire composition..

[0069] In an embodiment of the present disclosure, there is provided a process of preparing a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; and (e) 5 - 25 phr of at least one process aid, wherein the tire composition has a rolling resistance with a tanδ value value in a range of 0.050-0.200 at a tempreture of 60°C, the process comprising:(a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid is carried out at a temperature in the range of 150°C -170°C to obtain a first mixture; (b) curing the first mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the three wheeler tire composition. [0070] In an embodiment of the present disclosure, there is provided a process of preparing the rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, at least one cure activator, at least one antioxidant, at least one antiozonant, and at least one process aid to obtain a second mixture; (b) curing the second mixture with at least one curing agent and at least one curing accelerator to obtain the rubber composition.
[0071] In an embodiment of the present disclosure, there is provided a process of preparing a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.183-0.200 at a tempreture of 60oC, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer,

at least one styrene butadiene polymer, at least one reinforcing filler, at least one cure activator, at least one antioxidant, at least one antiozonant, and at least one process aid to obtain a second mixture; (b) curing the second mixture with at least one curing agent and at least one curing accelerator to obtain the two-wheeler tire composition.
[0072] In an embodiment of the present disclosure, there is provided a process of preparing a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in a range of 0.050-0.200 at a tempreturew crocess comprising:
(a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer,
at least one styrene butadiene polymer, at least one reinforcing filler, at least one cure activator,
at least one antioxidant, at least one antiozonant, and at least one process aid to obtain a second
mixture; (b) curing the second mixture with at least one curing agent and at least one curing
accelerator to obtain the three-wheeler tire composition.
[0073] In an embodiment of the present disclosure, there is provided a process of preparing the rubber composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer;
(b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene
butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one
process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at
least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one
antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing
accelerator, and combinations thereof, the process comprising: (a) contacting at least one
natural rubber based polymer, at least one polybutadiene polymer, at least one styrene
butadiene polymer, at least one reinforcing filler, at least one cure activator, at least one
antioxidant, at least one antiozonant, and at least one process aid is carried out at a temperature
in the range of 150°C -170°C to obtain a second mixture; (b) curing the second mixture with
at least one curing agent and at least one curing accelerator is carried out at a temperature in
the range of 95°C -115°C to obtain the rubber composition.
[0074] In an embodiment of the present disclosure, there is provided a process of preparing a two-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based

polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; and (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in arange of 0.183-0.200 at a tempreture of 60oC, the process comprising (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, at least one cure activator, at least one antioxidant, at least one antiozonant, and at least one process aid is carried out at a temperature in the range of 150°C -170°C to obtain a second mixture; (b) curing the second mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the two-wheeler tire composition. [0075] In an embodiment of the present disclosure, there is provided a process of preparing a three-wheeler tire composition comprising: (a) 20 - 45 phr of at least one natural rubber based polymer; (b) 20 - 45 phr of at least one polybutadiene polymer; (c) 10 - 60 phr of at least one styrene butadiene polymer; (d) 40 - 85 phr of at least one reinforcing filler; (e) 5 - 25 phr of at least one process aid; (f) at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof, wherein the tire composition has a rolling resistance with a tanδ value in arange of 0.183-0.200 at a tempreture of 60oC, the process comprising (a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, at least one cure activator, at least one antioxidant, at least one antiozonant, and at least one process aid is carried out at a temperature in the range of 150°C -170°C to obtain a second mixture; (b) curing the second mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the three-wheeler tire composition. [0076] In an embodiment of the present disclosure, there is provided a tire composition for two-wheeler having a value of loss tangent tanδ in a range of 0.183--0.200 at a temperature of 60oC
[0077] In an embodiment of the present disclosure, there is provided a tire composition for two-wheeler having a value of loss tangent tan δ of 0.195 at a temperature of 60oC

[0078] In an embodiment of the present disclosure, there is provided a tire composition for three-two-wheeler having a value of loss tangent tanδ in a range of 0.050 - 0.200 at a temperature 60oC.

[0079] In an embodiment of the present disclosure, there is provided a tire composition for three-wheeler having a value of loss tangent tanδ of 0.159 at a teat a temperature 60oC.
[0080] In an embodiment of the present disclosure, there is provided a tire composition for three-wheeler having a value of loss tangent tanδ of 0.165 at a temperature 60oC.
[0081] In an embodiment of the present disclosure at least one reinforcing filler material used in the rubber/tire composition may be carbon black, functional equivalents thereof. The carbon black used in the rubber composition include but not limited to different grades and types of Super abrasion furnace (SAF), Intermediate super abrasion furnace (ISAF), High abrasion furnace (HAF), Fast extruding furnace (FEF), General purpose furnace (GPF) or Semi-reinforcing surface (SRF) which may be used solely or in combination of two or more of them depending on the region in the tire and the purpose.
[0082] In an embodiment of the present disclosure few of the exemplary carbon black materials which can be used in the rubber/tire composition can be selected from N110, N134, N115, N220, N234 and/or N330, N339, N347, N375 grades.
[0083] In an embodiment of the present disclosure, there is provided a rubber composition for two-wheeler having rolling resistance with tanδ value in arange of 0.183--0.200 at a temperature of 60oC.
[0084] In an embodiment of the present disclosure, there is provided a rubber composition for two-wheeler having rolling resistance with tanδ value of 0.195 at a temperature 60oC. [0085] In an embodiment of the present disclosure, there is provided a rubber composition for three-wheeler having rolling resistance with tanδ value in a range of 0.500-0.200 at a temperature of 60oC.

[0086] In an embodiment of the present disclosure, there is provided a rubber composition for three-wheeler having rolling resistance with tan δ value of 0.159 at a temperature 60oC. [0087] In an embodiment of the present disclosure, there is provided a rubber composition for three-wheeler having rolling resistance witht an δ value in a range of 0.165 at a temperature 60oC.
EXAMPLES
[0088] The disclosure will now be illustrated with working examples, which is intended to illustrate the working of disclosure and not intended to take restrictively to imply any limitations on the scope of the present disclosure. Unless defined otherwise, all technical and
scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this disclosure belongs. Although methods and materials similar or equivalent to those described herein can be used in the practice of the disclosed methods and compositions, the exemplary methods, devices and materials are described herein. It is to be understood that this disclosure is not limited to particular methods, and experimental conditions described, as such methods and conditions may apply.
Materials and methods
[0089] Natural rubber (RSS 1, RSS 2, RSS 3, RSS 4, RSS 5 & RSS 1X, TSR 10, TSR 20 grade) and other chemicals including zinc oxide, stearic acid, cyclohexyl-2-benzothiazole sulfenamide (CBS), tetramethylthiuram disulphide (TMTD), were commercially procured. The at least one polybutadiene polymer is a polybutadiene rubber having above 95% of cis 1,4 polybutadiene content and has been procured from Lanxess. The at least one styrene butadiene polymer of the present disclosure is solution polymerized styrene butadiene rubber (SE-SLR4601 & NS216R) and has been procured from Zeon Chemicals. EXAMPLE 1
[0090] Exemplary rubber compositions/two wheeler/ three wheeler tire composition of the present disclosure are illustrated in the Table 1 below. The reinforcing materials can be added into the rubber composition/tire composition in a single or multiple steps.

[0091] Table 1
S.No.
1. 2. Broad categories Raw material Working
ranges
(phr) Tire Wheel
1 40
25 Compo er (2W)/ (3 2
40 25 sition (T Three w W)) 3
40 25 wo-heeler
4 40
25 Comp compo arative sitions
40 25

Natural rubber based polymer Sheet Rubber (Ribbed smoke sheet RSS-4) 20-45

Block
Rubber
(TSR-20)

Polybutadiene polymer Butadiene Rubber High 20-45

3. 4
5 6
7 8 9
10. molecular weight 35 16
3 2.5
3 1
2
1.95 1.23 35 16
3 2.5
3 1
2
1.95 1.23
32 35 16
3 2.5
3 1
2
1.95 1.23
30 35
20
3 2.5
3 1
2
1.95 1.23
32 40
60 37.76
2
3 1.25
3 1
1.75
1.56
1.2 0.07 35 16
3 2.5
3 1
2
1.95 1.23

Ni catalysed
Butadiene
Rubber

Styrene
butadiene
polymer Solution SBR 60-10

Emulsion SBR

Process aid TDAE OIL 5-25

Grip resin

Hydrocarbon resin

Cure activator Zinc oxide 2-4

Stearic acid 1-3

Antioxidant Antioxidant-(6 PPD) 1-4

Antioxidant-(TMQ) 0-3

Antiozonant Micro
crystaline
wax 1.5 p 2.5

Curing agent Sulphur 1.5-2.5

Curing accelerator (0-1.6 phr) CBS 0.0-1.6

TBBS 0.0-1.6

TMTM 0-0.25

Reinforcing filler (BET surface area range = 50 m2/g to 200 m2/g) Carbon black Grade N220 40-85

Carbon black Grade -N 234

Carbon black Grade -N339 60
0.150 0.205
Not tested
Not tested
180 28
0.156 0.213
Not tested
Not tested
200 28
0.155
0.200
0.195
(2W)
0.165
and
0.159
(3W)
0.184 190 28
0.160 0.192
Not tested
Not tested
190 78
0.197 0.235 0.255
200 0.157 0.200
170

Carbon black Grade -N375

Observations

DMA tension mode on compound RR-( tanδ @60)

Traction-(tanδ @0)

DMA
compression mode on tire RR-( tan δ @60)

Traction-(tan δ @0)

Compound
wear
properties Wear -
(Lamborn
index)

EXAMPLE 2
Process of preparing the rubber composition
[0092] The rubber composition of the present disclosure was compounded using a rubber
mixing apparatus in two stages (Stage 1 and Stage 2) and sheeted out on two-roll mill or twin
screw sheeter which is a machinery traditionally used for mixing rubber compounds according
to ASTM 3182.
[0093] 40 phr of Sheet Rubber (Ribbed smoke sheet RSS-4), 25 phr of butadiene rubber high
molecular weight, 35 phr of solution styrene butadiene rubber, 40-85 phr of carbon black grade
N220, Grade 234, Grade 339, and 16-20 phr of TDAE oil and/orGrip resin were mixed together
at a temperature in the range of 150°C -170°C to obtain a first mixture as master batch. The

first mixture was then cured with 1.95 phr of sulphur and 1.23 phr of accelerators at a temperature in the range of 95°C -115°C to obtain the rubber composition. The addition of accelerators and sulphur were delayed to the last part of the process to prevent premature vulcanization during compounding. The Rubber compositions were then sheeted out with a thickness of at least 2mm.
Procedure for Stage 1 mixing
[0094] The rubbers and all other ingredients were weighed as per the decided recipe. Care was taken to avoid shooting up of the temperature above 170°C. Further to this the compositions were sheeted out in the mill. The roll nip was set at 5.0 mm. After weighing the dumped stock, the composition was loaded onto the mill, giving minimum no's 3/4 cuts to get a smooth sheet (2 no's from each side generally) Post this continuous smooth stock were sheeted out.

S.No.
1 2 3 4 5 6 Step Time(Sec) R.P.M
65 65 65 65 95

Load Rubbers-Ram Down 0

Load 1/2 Carbon Black+ Zinc Oxide+ Stearic acid+1/2 Oil 45

Load 1/2 Carbon black+ Antioxidant+Wax+PF Resin+1/2 Oil 135

Sweep 240-260

Change RPM 260

Dump 360

Procedure for Final stage mixing
[0095] The first mixture (master batch) was kept as such for at least 4 hours before converting it to the final product. The nip was adjusted to 0.8 mm, and the stock was passed through the nip endwise six times, alternating the right and left ends. Further the nip was adjusted to 6 mm and the batch was passed four times without banding or rolling. Mooney viscosity, Mooney scorch and Carbon black dispersion specimens were removed from the batch. The nip was again adjusted to 3 mm and remaining compound was loaded onto the mill and continuous smooth stock was sheeted out to obtain the rubber composition.

S.No. 1
2 3 Step Time (Sec) R.P.M Temp

Rubber+ Sulphur+ TMTM+TBBS-Ram down 0 60

Sweep 30 60

Dump 180 60 100°C max

EXAMPLE 3
Process for preparing the two-wheeler tire composition and three-wheeler tire composition:
[0096] The two-wheeler tire compositions, the three-wheeler tire compositions, and the comparative compositions were prepared in a similar manner as described in Example 2. 40 phr of Sheet Rubber (Ribbed smoke sheet RSS-4), 25 phr of butadiene rubber high molecular weight, 35 phr of solution styrene butadiene rubber, 40-85 phr of carbon black grade N220, Grade 234, Grade 339, and 16-20 phr of TDAE oil and/or Grip resin, 3 phr of zinc oxide, 2.5 phr of stearic acid, 3 phr of 6 PPD, 1 phr of TMQ, 2 phr of Micro crystalline wax, were mixed together at a temperature in the range of 150°C -170°C to obtain a second mixture as master batch. The second mixture was then cured with 1.95 phr of sulphur and 1.23 phr of accelerators at a temperature in the range of 95°C -115°C to obtain the tire composition. The addition of accelerators and sulphur were delayed to the last part of the process to prevent premature vulcanization during compounding.
EXAMPLE 4
[0097] The afore-mentioned compositions 1-4 and the comparative compositions 1 and 2 as provided in Table 1 were subjected to the following tests. The tests were conducted in tensile mode on a cured rubber sample of dimensions 6mm width x 20mm length x 2mm thickness. Dynamic Mechanical Analysis a technique used to measure damping of materials as they are deformed under periodic force. To evaluate the rolling resistance and grip properties compositions of the present disclosure of the present disclosure (1-4) and the comparative composition (1 and 2), tan δ values were measured using over a frequency (10Hz), static strain amplitude (0.1%), dynamic strain amplitude (3.0 %) and temperature (-60°C to 20°C). The results of the analysis are shown in Table 1.
Lambourn Test: To find out abrasion resistance properties of the compositions 1-4 and the comparative compositions. The compositions of the present disclosure (1-4) and the comparative compositions 1 and 2, for the Lambourn abrasion test were worn under the conditions of loading of 5kg a slip ratio of 29 %, a temperature of 25-35° C, and a measuring time for 4 minutes using a Lambourn abrasion tester. Lambourn abrasion amounts of respective compositions were measured to calculate volume losses. The results of the analysis are shown in Table 1.
[0098] It is clear from the Table 1 that the composition 1, 2, 3 and 4 met all the three requirements, for a rubber composition for the manufacture of tire. The rubber/tire composition having ingredients in the ranges as disclosed in the Table 1 resulted in the desired properties,

i.e., reduced rolling resistance, improved abrasion resistance and improved traction. The specific rubber components and the carbon black are the essential ingredients to arrive at the rubber composition for tire which resulted in high resilience, low rolling resistance, high mileage, and high grip properties. Composition 2 showed best results in terms of rolling resistance, abrasion resistance, and traction. Since, the critical ingredients in composition 5 were not in the desired ranges, therefore the composition 5 was not able to show required rolling resistance. Similarly, the composition 6 failed to show reduction in wear properties, as the critical raw materials were outside the working ranges.
ADVANTAGES
[0099] The present disclosure provides a rubber composition for the manufacture of tire with reduced rolling resistance, improved abrasion resistance and improved traction because of the presence of the specific phr ranges of the ingredients. The results demonstrated that the rubber compositions comprising 20 - 45 phr of at least one natural rubber based polymer; 20 - 45 phr of at least one polybutadiene polymer; 10 - 60 phr of at least one styrene butadiene polymer; 40 - 85 phr of at least one reinforcing filler; and 5 - 25 phr of at least one process aid resulted in rubber composition for tire with high resilience, low rolling resistance, high mileage, and high grip properties. The specific carbon black used in the composition not only imparted strength to the tire but also aided in reduction of rolling resistance. The two wheeler tire composition had roling resistnce with a tan δ value in range of 0.183-0.200 at a temperature of 60oC, whereas the three wheeler tire composition rolling resistance with a tan δ value is in a range of 0.050-0.200 at a tempreture of 60oC was attained.

I/We Claim:
1. A rubber composition comprising:
(a) 20 - 45 phr of at least one natural rubber based polymer;
(b) 20 - 45 phr of at least one polybutadiene polymer;
(c) 10 - 60 phr of at least one styrene butadiene polymer;
(d) 40 - 85 phr of at least one reinforcing filler; and
(e) 5 - 25 phr of at least one process aid.
2. A two-wheeler tire composition comprising:
(a) 20 - 45 phr of at least one natural rubber based polymer,
(b) 20 - 45 phr of at least one polybutadiene polymer,
(c) 10 - 60 phr of at least one styrene butadiene polymer;
(d) 40 - 85 phr of at least one reinforcing filler; and
(e) 5 - 25 phr of at least one process aid,
wherein the tire composition has a rolling resistance with a tan δ value in a range of 0.183-0.200 at a tempreture of 60oC.
3. A three-wheeler tire composition comprising:
(a) 20 - 45 phr of at least one natural rubber based polymer,
(b) 20 - 45 phr of at least one polybutadiene polymer,
(c) 10 - 60 phr of at least one styrene butadiene polymer;
(d) 40 - 85 phr of at least one reinforcing filler; and
(e) 5 - 25 phr of at least one process aid,
wherein the tire composition has a rolling resistance with a tan δ value is in a range of 0.050-0.200 at a tempreture of 60oC.
4. The composition as claimed in any one of the claims 1-3, wherein the composition has a Lambourn wear index value in the range of 175-300.
5. The composition as claimed in any one of the claims 1-3, wherein the at least one natural rubber based polymer is ribbed smoked sheet; the at least one polybutadiene polymer is neodymium catalyst; the at least one styrene butadiene polymer is solution polymerized styrene butadiene rubber; the at least one process aid is selected from the group consisting of phenol formaldehyde (PF) resin, C5 hydrocarbon resin, C9 hydrocarbon resin, alpha methyl styrene resin, terpene phenol resin, treated distillate aromatic extract (TDAE) oil, and combinations thereof.

6. The composition as claimed in any one of the claims 1-3, further comprises at least one additive is selected from the group consisting of 1-4 phr of at least one cure activator, 0-4 phr of at least one antioxidant, 1.5 p 2.5 phr of at least one antiozonant, 1.5 p 2.5 phr of at least one curing agent, 0 p 1.6 phr of at least one curing accelerator, and combinations thereof.
7. The composition as claimed in any one of the claims 1-3, wherein the at least one reinforcing filler is carbon black having a BET surface area in a range of 50 - 200 square meters per gram.
8. The composition as claimed in claim 6, wherein the at least one cure activator is selected from the group consisting of zinc oxide, stearic acid, and combinations thereof; the at least one antioxidant is selected from the group consisting of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylendiamine (6PPD), 2,2,4-trimethyl-l,2-dihydroquinoline (TQ), and combinations thereof; the at least one antiozonant is microcrystalline wax; the at least one curing agent is selected from the group consisting of sulfur, sulfur donors, and combinations thereof; the at least one curing accelerator is selected from the group consisting of tetra methyl thiuram monosulphide (TMTM), N-tertiary butyl-2-benzothiazole sulphenamides (TBBS), N-cyclohexyl-2-benzothiazole sulfenamide (CBS), and combinations thereof.
9. A process of preparing the composition as claimed in any one of the claims 1-3, the process comprising:

(a) contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid to obtain a first mixture;
(b) curing the first mixture with at least one curing agent and at least one curing accelerator to obtain the composition.

10. The process as claimed in claim 9, wherein contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, and at least one process aid to obtain a first mixture is carried out at a temperature in the range of 150°C -170°C; curing the first mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the composition.
11. A process of preparing the composition as claimed in claim 6, the process comprising: (a) contacting at least one natural rubber based polymer, at least one polybutadiene
polymer, at least one styrene butadiene polymer, at least one reinforcing filler, at

least one cure activator, at least one antioxidant, at least one antiozonant, and at least one process aid to obtain a second mixture; (b) curing the second mixture with at least one curing agent and at least one curing accelerator to obtain the composition.
12. The process as claimed in claim 11, wherein contacting at least one natural rubber based polymer, at least one polybutadiene polymer, at least one styrene butadiene polymer, at least one reinforcing filler, at least one cure activator, at least one antioxidant, at least one antiozonant, and at least one process aid to obtain a second mixture is carried out at a temperature in the range of 150°C -170°C; curing the second mixture with at least one curing agent and at least one curing accelerator is carried out at a temperature in the range of 95°C -115°C to obtain the composition.
13. A tire composition for two-wheeler having a value of loss tangent tan δ in a range of 0.183-0.200 at a temreture of 60oC.
14. A tire composition for three-wheeler having a value of loss tangent tan δ in a range of 0.050 - 0.200 at a tempreture of 60oC.
15. A rubber composition for two-wheeler having rolling resistance with tan δ value in a range of 0.183-0.200 at a tempreture of 60oC.
16. A rubber composition for three-wheeler having rolling resistance with tan δ value in a range of 0.050-0.200 at a temperature of 60oC.