DESC:FIELD OF THE INVENTION:
The present invention relates to the field of Polymer Technology. The present invention in particular relates to a tire tread rubber composition containing magnetic filler as reinforcing filler and its method of preparation.

BACKGROUND OF THE INVENTION:
Elastomeric magnetic composites are materials containing ferromagnetic ?ller as one of the constituents. The ?nal properties of the composites are strongly dependent on the characteristics of the polymer matrix. However, by incorporation of magnetic ?llers new properties and technological abilities can be provided.
Several magnetic fillers like ferrites represent a well-established family of magnetic materials. M-types of hexagonal ferrites, which were used are compounds of iron oxide with the oxides of some other metals of general formula MeO.6Fe2O3 (where M is a bivalent cation such as Sr, Ba, and Pb). They have a domain structure, which terminates over the Currie temperature. High values of magneto-crystalline anisotropy and saturation magnetization allow wide application of these materials as permanent magnets. Magnetic hard ferrites demonstrate a wide hysteresis loop and a large coercivity Hc>2.5kA.m-1. They also express a high value of remanent magnetic induction Br and a high value of maximum energy product (BH) max. Ferrites may occur in several crystallographic modi?cations, but in terms of possible applications, ferrites with hexagonal structures express the biggest interest as the magnetic powdery ?llers Ba- and Sr-ferrites are very often used. They have good chemical stability, lower speci?c weight, and suitable magnetic characteristics. Low price and chemical resistance are the next benefits of these magnetic materials, which become very important materials as media for magnetic and magnetic-optical recording, and as components for reproducers, engines, and generators in the automobile industry. The advantage of elastomeric magnetic composites is that their properties can be modi?ed for the requirements of speci?c applications. Because of their elasticity and easy moldability, they are suitable for additive devices, where elasticity and ?exibility are additional and important parameters. Moreover, they have very good magnetic properties. Rubber magnets can absorb shock and sound, so they can be applied in-dc motors, motor parts, and memo holders, in microwave and radar technology, also in other technological applications.

In the field of intelligent tyres, magnetic filler-filled rubber compounds might be used to produce tyre sidewalls or treads, eventually, small rubber components are incorporated into tyres, and it is operating as permanent magnets. It is supposed that magnetic filler-filled compounds could be used to evaluate deformation forces in tyres during driving.

Reference made to the following:
Publication no. US6476110 discloses rubber compositions filled with an unusually high content of solid magnetizable particles such as iron oxide or strontium ferrite but having great resistance to crack initiation and crack growth. This allows the generation of strongly magnetized areas in rubber articles built with a rubber composition according to this invention. This is also given in those applications where a large distance between a row of magnetized areas and a sensor is necessary due to the deformation of well-reproducible and well-recognizable signals despite the existence of disturbing magnetic fields. The magnetizable particles are bonded to a rubber matrix by a bonding agent, namely an organo-functional silane. The referred patent discusses NR:BR blend-based tyre sidewall rubber compositions filled with an unusually high content of solid magnetizable particles (ferrite) having great resistance to crack initiation and crack growth whereas the present invention discusses the use of tire tread rubber composition containing the iron (III) oxide as magnetic reinforcing filler to provide obtain wear resistance.
Publication no. US20060167150 discloses magnetic rubber composition for encoder having a magnetic characteristic in sufficient application range, used as encoder after magnetization as well as heat resistance, water resistance and oil resistance required for use as encoder, and excellent processing property, and capable of being bonded by vulcanization with a metal, is provided. Furthermore, a magnetic rubber composition for the encoder capable of obtaining sufficient magnetic force required for the encoder on a circumference of the molded encoder as well as capable of effectively restraining variation of the level of magnetic force, is provided. The referred patent discusses the magnetic rubber composition for the encoder which detects the rotation speed of the wheel shaft whereas the present invention discusses the use of tire tread rubber composition containing iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

Publication no. EP1889872 provides a rubber composition filled with a magnetic powder at a high packing density, where an ethylene-alkyl acrylate copolymer rubber having amine vulcanizable groups as a binder, and effectively usable in rubber-bonded sensor magnets, etc., without any foaming at the time of vulcanization molding and with distinguished processabilities such as mold releasability, etc. The referred patent discusses the rubber composition for use as a molding material for rubber bonded magnets whereas the present invention discusses the use of tire tread rubber composition containing iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

Publication no. WO2015181148 discusses the use of thermoplastic elastomer and magnetic filler preferably magnetite in a sub-layer in the crown either inside the tread or between the tread and belt whereas the present invention discusses the use of tyre tread rubber composition containing the iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

Publication no. EP0799727 discusses the arrangement uses the magneto-rheological fluid to achieve greater rigidity in the shoulder area of the tire when passing through a magnetic field so that the reduced flexing ability of this area leads to a reduction in heat generation whereas the present invention discusses the use of tyre tread rubber composition containing the iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

Publication no. WO0160639 discusses the use of tire sidewall rubber composition containing natural rubber and butadiene rubber blend along with strontium ferrite magnetic filler and organoxysilylsulfane coupling agent to provide a magnetic signal to Sidewall Torsional Sensor System, which in turn provides the onboard vehicle computer with immediate information about the forces acting on the tires without comprising and also by improving fatigue resistance and crack growth resistance whereas present invention discusses the use of tyre tread rubber composition containing the iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

Publication no. WO2018102289 discusses the use of tire tread rubber composition containing epoxidized rubber component along with iron oxide as a reinforcing filler to improve dry braking, wet braking, and rolling resistance whereas the present invention discusses the use of tyre tread rubber composition containing the iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

The article entitled “Elastomeric materials with magnetic fillers for intelligent tyres construction” in KGK rubber point, January 2010 talks about the use of elastomeric materials in NR-based tire sidewall rubber composition along with strontium ferrite type FD8/24 as a magnetic filler to study the physical-mechanical and magnetic properties whereas present invention discusses the use of tyre tread rubber composition containing strontium ferrite or the iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

The article entitled “Magnetic composites based on butadiene rubber and strontium ferrites” MOJ Poly Sci. 2017 talks about the use of strontium ferrites rubber composites based on butadiene rubber whereas the present invention discusses the use of tyre tread rubber composition containing the iron (III) oxide as magnetic reinforcing filler to provide wear resistance along with low rolling resistance.

In view of the above prior arts, the present invention employs iron (III) oxide as a magnetic filler, and it is a potential reinforcement filler in rubber matrix and has a significant scope from a commercial and industrial point of view.

Still, there is a need to develop an improved tyre tread rubber composition and its method of preparation to provide wear resistance and low rolling resistance along with better processing properties.

OBJECTS OF THE INVENTION:
The principal object of the present invention is to provide a tyre tread rubber composition containing magnetic filler as reinforcing filler and its method of preparation.

Another object of the present invention is to provide a tyre tread rubber composition to provides wear resistance along with low rolling resistance.

Another object of the present invention is to provide a tyre tread rubber composition to provide better processing properties.

Another object of the present invention is to provide a tyre tread rubber composition containing magnetic filler as a partial replacement of reinforcing filler carbon black.

Another object of the present invention is to provide an SBR: NR: PBR 1220 blend-based tyre tread rubber composition.

Another object of the present invention is to provide a motorcycle tyre tread rubber composition that delivers lower hysteresis.

SUMMARY OF THE INVENTION
One or more problems of the conventional prior arts may be overcome by various embodiments of the present invention.

It is the primary aspect of the present invention to provide a tyre tread rubber composition, comprising of:
Rubber matrix or Elastomeric blend - 100 parts per hundred rubber (phr);
Reinforcing filler - 40-60 phr;
Magnetic filler - 1-20 phr;
Process aid - 4-10 phr;
Anti-degradant - 1-2 phr;
Antioxidant ¬- 1-2 phr;
Activators - 1-5.5 phr;
Vulcanization agent - 1-2.5 phr; and
Accelerators - 1-4 phr,
wherein the magnetic filler is selected from iron (III) oxide.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the rubbers are selected from blends of SBR: BR: NR, in a weight ratio of 60: 15: 25.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the reinforcing filler is carbon black of grades N220, N234 or blends of any of these two carbon black grades.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the process aid is TDAE oil.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the anti-degradant is Microcrystalline wax.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the antioxidant is 6PPD.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the activators are selected from zinc oxide and stearic acid, in a weight ratio of 2-3.5: 1-2.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the vulcanization agent is sulphur.

It is another aspect of the present invention to provide a tyre tread rubber composition, wherein the accelerator is CBS.

It is another aspect of the present invention to provide a method for preparation of tyre tread rubber composition, comprising of steps:
Preparation of masterbatch in Banbury Mixer:
Step 1:
Mixing of rubbers for 0-35 seconds;
Adding carbon black, iron (III) oxide magnetic filler, TDAE oil, rubber chemicals 6PPD, MC wax and mixing for 100-230 seconds;
Sweeping down in the orifice and mixing for 80-102 seconds; and
Dumping of the rubber compound at a temperature range of 130-165 degree Celsius and sheeting out using laboratory two-roll mill.
Step 2:
Mixing of step 1 masterbatch compound using a Banbury mixer for 60-180 seconds, and dumping at a temperature range of 110-150 degree Celsius and sheeting out using laboratory two-roll mill,
wherein the parameter for masterbatch preparation includes maintaining head temperature of Banbury mixer between 65-80 degree Celsius and the unloaded rotor speed between 45-60 rpm,
Preparation of final batch in Banbury Mixer:
Mixing of step 2 masterbatch rubber compound for 5-30 seconds;
Adding accelerator, CBS, and the vulcanization agent sulphur;
Mixing for 60-90 seconds and dumping at a temperature range of 100-120 degree Celsius; and
Sheeting out using the laboratory two-roll mill,
wherein the magnetic filler is selected from iron (III) oxide, and
wherein the rubbers are selected from blends of
SBR: NR: BR, in a weight ratio of 60:15:25.

BRIEF DESCRIPTION OF DRAWINGS:
The accompanying drawings, which are incorporated in and constitute a part of this specification, show certain aspects of the subject matter disclosed herein and, together with the description, help explain some of the principles associated with the disclosed implementations. In the drawing,
Figure 1 represents the SEM image of iron (III) oxide magnetic reinforcing filler at 1µm, in accordance with an aspect of the present invention.

DETAILED DESCRIPTION OF THE INVENTION:
Various embodiments of the invention are discussed in detail below. While specific implementations are discussed, it should be understood that this is done for illustration purposes only. A person skilled in the relevant art will recognize that other components and configurations may be used without parting from the spirit and scope of the invention. Thus, the following description and drawings are illustrative and are not to be construed as limiting. Numerous specific details are described to provide a thorough understanding of the invention. However, in certain instances, known details are not described in order to avoid obscuring the description.
References to one or an embodiment in the present invention can be references to the same embodiment or any embodiment; and, such references mean at least one of the embodiments.
Reference to "one embodiment", "an embodiment", “one aspect”, “some aspects”, “an aspect” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Moreover, various features are described which may be exhibited by some embodiments and not by others.
The terms used in this specification generally have their ordinary meanings in the art, within the context of the invention, and in the specific context where each term is used. Alternative language and synonyms may be used for any one or more of the terms discussed herein, and no special significance should be placed upon whether or not a term is elaborated or discussed herein. In some cases, synonyms for certain terms are provided.
A recital of one or more synonyms does not exclude the use of other synonyms.
The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only, and is not intended to further limit the scope and meaning of the invention or of any example term. Likewise, the invention is not limited to various embodiments given in this specification. Without intent to limit the scope of the invention, examples of instruments, apparatus, methods, and their related results according to the embodiments of the present disclosure are given below. Note that titles or subtitles may be used in the examples for the convenience of a reader, which in no way should limit the scope of the invention. Unless otherwise defined, technical and scientific terms used herein have the meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. In the case of conflict, the present document, including definitions will control.
Additional features and advantages of the invention will be set forth in the description that follows, and in part will be obvious from the description, or can be learned by practice of the herein disclosed principles. The features and advantages of the invention can be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims. These and other features of the invention will become more fully apparent from the following description and appended claims, or can be learned by the practice of the principles set forth herein.
As mentioned above, there is a need to overcome the limitations associated with tyre tread rubber composition and its method of preparation. The present invention, therefore: provides a wear resistance and a low rolling resistance along with better processing properties.
Figure 1 represents the SEM image of iron (III) oxide magnetic reinforcing filler at 1µm, in accordance with an aspect of the present invention.
The present invention relates to a high-performance tyre tread composition and its method of preparation. The composition for motorcycle tyre treads comprises a rubber matrix or elastomeric blends, a magnetic reinforcing filler, a reinforcing filler carbon black, activators, an anti-degradant, an antioxidant, a vulcanization agent, and a primary accelerator. Rubber composition details are given in Table 1.
Table 1: Rubber Composition in phr
Ingredients Control C1, phr Formulation related to invention F1, phr
SBR 15021 60.00 60.00
NR2 15.00 15.00
PBR 12203 25.00 25.00
N2204 55.00 50.00
Iron (III) oxide5 - 5.00
TDAE oil6 4.00 4.00
MC Wax7 2.00 2.00
6PPD8 2.00 2.50
Zinc oxide9 2.50 3.00
Stearic acid10 1.50 1.50
Sulphur11 1.70 1.70
CBS12 1.70 1.70
Total 170.40 171.40
1. SBR 1502 – Emulsion polymerized non-oil extended styrene butadiene rubber is from Reliance Industries, India.
2. NR - Indian Standard Natural Rubber, ISNR 20 grade is from Alpharub Trading and Manufacturing Private Ltd., India.
3. PBR 1220 – Polybutadiene rubber is from Reliance Industries, India.
4. Carbon black – ASTM grade N220 Carbon black is from PCBL, India.
5. Iron (III) oxide (Fe3O4) – It is a magnetic reinforcing filler with a molecular weight of 231.53g/mol, melting point of 1597 Deg C, density of 5gm/cm3, APS – 1µm from Intelligent Materials Pvt ltd., India.
6. TDAE Oil (Treated Distillate Aromatic Extract) – It is a process aid from Panama Petroleum, India.
7. MC Wax - Microcrystalline wax is used to protect against degradation by ozone from Gujarat Paraffins Pvt Ltd., India.
8. 6PPD - (N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine)” is an anti-degradant and added to the rubber composition to provide resistance to thermo-oxidative ageing of elastomers is from Lanxess India Private Limited.
9. Zinc oxide which acts as an activator of the vulcanization of the rubber compound is from POCL Enterprises Ltd., India.
10. Stearic acid - a Process aid from 3F Industries Limited, Andhra Pradesh. Also, Zinc oxide and Stearic acid are added to form zinc soap, which improves the solubility of zinc oxide in the compound, and with the accelerator to form a complex, this complex reacts with sulphur to produce a strong cure activating system.
11. Sulphur is from Southern Minerals and Chemicals, Kerala. It is a vulcanizing agent.
12. CBS - N-cyclohexyl-2-benzothiazolesulfenamide”, is a delayed action accelerator, is from PMC Rubber Chemicals India Private Limited, West Bengal, India.
The rubber composition comprises iron (III) oxide as magnetic reinforcing filler in SBR: NR: BR blend-based rubber composition to provide wear resistance along with low rolling resistance. The magnetic reinforcing filler provides suitable magnetic characteristics and contributes to the improvement of the physico-mechanical properties of rubber composites by improving the interaction between the polymer and filler phases.

Method of preparation of tyre tread rubber composition:
Mixing Sequence:
Using a Banbury mixer, a rubber composition prepared by a thermo-mechanical process is as follows:
Preparation of Masterbatch:
Step I Masterbatch: Mixing has been done by maintaining the head temperature of the Banbury mixer between 65 to 80°C and the unloaded rotor speed between 45 to 60 rpm. The mixing cycle is to be followed as: a) Mixing chamber is charged with rubbers and allowed to mix for 0 to 35 seconds, b) Adding carbon black, iron (III) oxide magnetic filler, TDAE oil, rubber chemicals 6PPD, and MC Wax for 100 to 230 seconds, c) Sweeping down in the orifice and allowed to mix for another 80 to 102 seconds, and the compound is dumped at the temperature in the range of 130°C to 165°C and sheeted out in the laboratory two roll mill.
Step II Masterbatch: Adding the step I masterbatch in the Banbury Mixer and allow to mix for 60 to 180 seconds, and the rubber compound is dumped at the temperature in the range of 110°C to 150°C and sheeted out in the laboratory two-roll mill.
Preparation of Final Batch: Thermo mechanical mixing of a final batch is as follows:
The mixing chamber is charged with the Step II masterbatch rubber compound and allowed to mix for 5 to 30 seconds; adding the accelerator CBS and the vulcanization agent sulphur; mixing for 60 to 90 seconds, and the rubber compound is dumped at the temperature in the range of 100°C to 120°C. The final batch sheet out is done in the laboratory two-roll mill.

Results:
The Rubber compound properties of a motorcycle tyre tread rubber composition are listed in Table 2 as mentioned below:

Table 2: Properties of Rubber Compound and Rubber Vulcanizate
Properties Control, C1 Formulation related to invention, F1 Index

M1. Processability of a Rubber Compound (Mooney scorch at 125 deg C)
t5, min: min
(Higher the index value is better) 24.03 28.41 118.22
t35, min: min
(Higher the index value is better) 28.41 31.19 109.79
M2. Hardness of a Rubber Vulcanizate
Hardness, Shore A 69 67 -
M3. Dynamic Properties of a Rubber Vulcanizate
Tan delta at 60 Deg C (Lower the index value is better) 0.161 0.149 92.55

M4. Physical Properties of a Rubber Vulcanizate
Elongation at break, % (Higher the index value is better) 393.54 406.24 103.22
M5. Abrasion Loss of a Rubber Vulcanizate
Abrasion Loss, mm3
(Note: Ideal abrasion loss value for an LRR compound is Rubber Vulcanizate is less than or equal to 170 mm3)
Lower the index value is better. 70.40 71.15 -
M6. Hysteresis of a Rubber Vulcanizate
Tan delta at 80 Deg C (Lower the index value is better) 0.150 0.140 93.33

Characterization of Cured Rubber Vulcanizate and Uncured Rubber Compound:
Measurements and Tests:
The purpose of these tests is to measure the improved properties of the rubber compositions related to the invention against control composition. For this, two rubber compositions C1 & F1 prepared based on SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black and the reinforcing filler carbon black filler is replaced by 5 phr of magnetic reinforcing filler iron (III) oxide (F1) against SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black (C1) are prepared and evaluated.

The present invention relates to a 100 parts by weight rubber composition F1, SBR: NR: BR (60:15:25) blend that contains a reinforcing filler carbon black, and the reinforcing filler carbon black is replaced by 5 phr of magnetic reinforcing filler iron (III) oxide (F1) to provide a process safety, and t5 value is improved by 18.22% when compared to SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black (C1 Control).

The present invention also relates to a 100 parts by weight of rubber composition F1, SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black, and the reinforcing filler carbon black is replaced by 5 phr of magnetic reinforcing filler to provide a hardness 67 Shore A.

The present invention also relates to a 100 parts by weight of rubber composition F1, SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black, and the reinforcing filler carbon black is replaced by 5 phr of magnetic reinforcing filler iron (III) oxide to provide an abrasion loss value, 71.15 mm3 when compared to SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black (C1 Control).
(Note: The ideal abrasion loss value for an LRR compound is Rubber Vulcanizate is less than or equal to 170 mm3)
The present invention further relates to a 100 parts by weight of rubber composition F1, SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black, and the reinforcing filler carbon black is replaced by 5 phr of magnetic reinforcing filler iron (III) oxide to provide 7.45% lower rolling resistance along with 6.67% lower hysteresis when compared to SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black (C1 Control).

Hence, Magnetic reinforcing filler iron (III) oxide containing SBR: NR: BR (60:15:25) blend-based rubber composition F1 gives wear resistance, low rolling resistance, and lower hysteresis along with better processing properties when compared to SBR: NR: BR (60:15:25) blend containing reinforcing filler carbon black (C1 Control). Moreover, Magnetic reinforcing filler containing SBR: NR: BR (60:15:25) blend-based rubber composition F1 gave 67 Shore A hardness.

Characterization of Cured Rubber Vulcanizate and Rubber Compound:
M1. Mooney Scorch Characteristics (pre-vulcanization characteristics using large rotor) for processability:
The Mooney Scorch measurements are carried out with a Mooney Viscometer (MV 2000 Alpha technologies, USA) according to ASTM D1646. t5 indicates the time to scorch (MV+5) which indicates the processing properties (process safety) and t35 indicates the time to cure (MV+35)

M2. Shore A Hardness:
Shore A Hardness of the Rubber Vulcanizate is assessed in accordance with ASTM D 2240.

M3. Dynamic properties of the Rubber Vulcanizate:
The dynamic properties of the rubber vulcanizate are measured in a dynamic mechanical analyzer (DMA Metravib +1000) with a dynamic strain of 0.3%, 0.6% of static strain, temperature sweep ranging from -40 to +80°C, frequency: 10Hz in tension mode as per ASTM D5992.
Tan delta at 60°C is commonly used as a predictor of tyre rolling resistance. Also, lowering the tan delta value to 60°C provides low rolling resistance.

M4. Physical properties of the Rubber Vulcanizate:
Elongation at the Break of the Rubber Vulcanizates is measured in a Universal testing machine (UTM) in accordance with ASTM D 412.

M5: Din Abrasion Loss of the Rubber Vulcanizate:
Abrasion loss of the rubber vulcanizates is measured in accordance with ASTM D 5963 using Din Abrader.

M6: Hysteresis of the Rubber Vulcanizate:
Hysteresis of a Rubber Vulcanizate is measured in a dynamic mechanical analyzer (DMA Metravib +1000) with a dynamic strain of 0.3%, 0.6% of static strain, temperature sweep ranging from -40 to +80°C, frequency: 10Hz in tension mode as per ASTM D5992.

Advantages:
a) Rubber composition used in the present invention can be used in intelligent tyres.
b) Rubber composition for motorcycle tread to provide lower rolling resistance along with wear resistance. ,CLAIMS:I/We Claim(s):
1. A tyre tread rubber composition comprising:
Rubber matrix or Elastomeric blend - 100 parts per hundred rubber (phr);
Reinforcing filler - 40-60 phr;
Magnetic filler - 1-20 phr;
Process aid - 4-10 phr;
Anti-degradant - 1-2 phr;
Antioxidant - 1-2 phr;
Activators - 1-5.5 phr;
Vulcanization agent - 1-2.5 phr; and
Accelerators - 1-4 phr;
wherein the magnetic filler is selected from iron (III) oxide.
2. The tyre tread rubber composition as claimed in claim 1, wherein the rubbers are selected from blends of SBR: BR: NR, in a weight ratio of 60: 15: 25.

3. The tyre tread rubber composition as claimed in claim 1, wherein the reinforcing filler is a carbon black of grades N220, N234 or blends of any of these two carbon black grades.

4. The tyre tread rubber composition as claimed in claim 1, wherein the process aid is a TDAE oil.

5. The tyre tread rubber composition as claimed in claim 1, wherein the anti-degradant is a Microcrystalline wax.

6. The tyre tread rubber composition as claimed in claim 1, wherein the antioxidant is 6PPD.

7. The tyre tread rubber composition as claimed in claim 1, wherein the activators are selected from zinc oxide and stearic acid, in a weight ratio of 2-3.5: 1-2.

8. The tyre tread rubber composition as claimed in claim 1, wherein the vulcanization agent is sulphur.

9. The tyre tread rubber composition as claimed in claim 1, wherein the accelerator is CBS.

10. A method for preparation of tyre tread rubber composition comprising:
Step 1 of Preparation of masterbatch in Banbury Mixer:
Mixing of rubbers for 0-35 seconds;
Adding carbon black, iron (III) oxide magnetic filler, TDAE oil, rubber chemicals 6PPD, MC wax and mixing for 100-230 seconds;
Sweeping down in the orifice and mixing for 80-102 seconds; and
Dumping of the rubber compound at a temperature range of 130-165 degree Celsius and sheeting out using a laboratory two-roll mill,
Step 2 of Preparation of masterbatch in Banbury Mixer:
Mixing of step 1 masterbatch compound using a Banbury mixer for 60-180 seconds, and dumping at a temperature range of 110-150 degree Celsius and sheeting out using a laboratory two-roll mill,
wherein the parameter for masterbatch preparation includes maintaining head temperature of Banbury mixer between 65-80 degree Celsius and the unloaded rotor speed between 45-60 rpm,
Preparation of final batch in Banbury Mixer:
Mixing of step 2 masterbatch rubber compound for 5-30 seconds;
Adding accelerator, CBS, and the vulcanization agent sulphur;
Mixing for 60-90 seconds and dumping at a temperature range of 100-120 degree Celsius; and
Sheeting out using the laboratory two-roll mill,
wherein the magnetic filler is selected from iron (III) oxide,
wherein the rubbers are selected from blends of SBR: NR: BR, in a weight ratio of 60:15:25.