DESC:FORM 2

THE PATENTS ACT, 1970
(SECTION 39 OF 1970)
&
The Patents Rules, 2003

COMPLETE SPECIFICATION
(Section 10 and Rule 13)

SYNERGISTIC TRIPLE COMBINATION, COMPOSITION CONTAINING THEM, PROCESS FOR PREPARING AND USE THEREOF

We, COROMANDEL INTERNATIONAL LIMITED,
an Indian company incorporated under Companies Act of 1956, having its principal place of business at Coromandel House, Sardar Patel Road, Secunderabad – 500 003, Telangana, India.

The following specification particularly describes the invention and the manner in which it is to be performed:
FIELD OF THE INVENTION
The present invention relates to synergistic composition comprising combination of a pyrimidine based herbicide and one or more phenoxy herbicides.
The present invention relates to synergistic composition comprising combination of a pyrimidinyl carboxy herbicide and one or more phenoxy herbicides, wherein said phenoxy herbicides are selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide.
The present invention also relates to synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, one or more phenoxy herbicides, rheology modifier, dispersing agent and other agrochemical auxiliaries.
The present invention specifically relates to synergistic composition comprising combination of pyrimidinyl carboxy herbicide, one or more phenoxy herbicides selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide, rheology modifier, dispersing agent and other agrochemical auxiliaries, wherein said pyrimidinyl carboxy herbicide is Bispyribac or its salts, aryloxyphenoxypropionate herbicide is Cyhalofop-butyl and phenoxy acetic acid herbicide is 2,4-Dichlorophenoxy acetic acid derivative.
The present invention specifically relates to synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, aryloxyphenoxypropionate herbicide, phenoxy acetic acid herbicide at a weight in the ratio of 1 : 1: 20 to 1 : 5 : 40 of first active ingredient to the second active ingredient and third active ingredient, more preferably in the ratio of 1 : 3 : 25.
The present invention specifically relates to synergistic composition comprising combination of Bispyribac sodium and Cyhalofop-butyl.
The present invention specifically relates to synergistic composition comprising combination of Bispyribac sodium and Cyhalofop-butyl and 2,4-Dichlorophenoxy acetic acid derivative (2,4-DEE or 2,4-D sodium salt).
The present invention also relates to a process for the preparation of synergistic composition comprising combination of a pyrimidinyl carboxy herbicide and one or more phenoxy herbicides.
BACKGROUND OF THE INVENTION
Bispyribac sodium is a broad-spectrum, post emergence contact herbicide which controls grass and broadleaf weeds. Bispyribac sodium acts by inhibition of the plant enzyme acetolactate synthetase (ALS).
Bispyribac sodium is formulated as a wettable powder or water soluble granule, packaged in water soluble bags and applied as broadcast or surface sprays using ground or aerial sprayers.
Bispyribac sodium is registered for use to control grasses and broad-leaf weeds, with the mode of action being inhibition of acetolactate synthase.
Bispyribac sodium is registered for use on rice, and non-agricultural sites including ornamental lawns; turf, including canals, drainage ditches, marshes, lakes ponds and reservoirs.
Bispyribac sodium is chemically known as sodium 2,6-bis[(4,6-dimethoxypyrimidin-2-yl)oxy)benzoate and has the following structure :

Phenoxy herbicides (or "phenoxies") are a family of chemicals related to the growth hormone indoleacetic acid (IAA). When sprayed on broad-leaf plants they induce rapid, uncontrolled growth ("growing to death"). When sprayed on monocotyledonous (grass) crops such as wheat or corn, they selectively kill broad-leaf weeds, leaving the crops relatively unaffected. The wide variety of phenoxies in use today can be grouped into the phenoxyacetic, phenoxybutyric and phenoxypropionic subtypes,[1] the latter containing the aryloxyphenoxypropionic subtype with the greatest number of commercial variants. Chemically, they are carboxylic acids, typically applied in an ester or salt form.
Cyhalofop-butyl is a post-emergence, aryloxyphenoxypropionate herbicide, which is used in controlling weeds in rice plantations. Its mode of action involves the inhibition of acetyl-coenzyme A carboxylase (ACCase) biosynthesis. Cyhalofop-butyl may be used as a reference standard in the determination of cyhalofop-butyl in rice samples using liquid chromatography coupled with diode array detector (LC-DAD).
Cyhalofop butyl is chemically known as 2-Butyl-(R)-2-[4(4-cyano-2-fluorophenoxy)phenoxy]propionate, and has the following structure:

The esters are 2,4-DEE (2,4-Dichlorophenoxy)acetic acid ethyl ester); 2,4-D 2-ethylhexyl ester (EHE) and the salt forms are 2,4-D sodium (sodium 2,4-Dichlorophenoxy)acetate); 2,4-D dimethyl-amine salt (DMA salt) .
Though, conventionally each of these active ingredients are used individually, combination product is not approved which has applications compared to the mono product. Hence, there is increased interest in the use of active ingredients in combination to give synergistic results.
US 4,906,285 A claims Bispyribac or its salts, and its composition and the herbicidal activity.
Accordingly, there is a need in the art to provide synergistic compositions of combinations which environmentally safer and stable herbicidal / insecticidal / acaricidal compositions having two or more active ingredients with different physical and chemical properties.
It was surprisingly and unexpectedly found by the present inventors that a selective combination composition Bispyribac and Cyhalofop-butyl and Bispyribac, Cyhalofop-butyl and 2,4-Dichlorophenoxyacetic acid derivatives (2,4-DEE, 2,4-D sodium salt), rheology modifier and dispersing agent and other agrochemical auxiliaries, possesses enhanced efficacy, improved penetration and long duration control of phytopathogens as compared to its other traditional formulations with long storage stability across a wide temperature range and having no adverse impact on photosynthetic activity in plant and fruit quality.

OBJECTIVE OF INVENTION
The main objective of the present invention is to provide synergistic composition comprising combination of a pyrimidine based herbicide and one or more phenoxy herbicides.
Another objective of the present invention is to provide synergistic composition comprising combination of a pyrimidinyl carboxy herbicide and one or more phenoxy herbicides, wherein said phenoxy herbicides are selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide.
Another objective of the present invention is to provide synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, one or more phenoxy herbicides, rheology modifier, dispersing agent and other agrochemical auxiliaries.
Another objective of the present invention is to provide synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, one or more phenoxy herbicides selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide, rheology modifier, dispersing agent and other agrochemical auxiliaries, wherein said pyrimidinyl carboxy herbicide is Bispyribac or its salts, aryloxyphenoxypropionate herbicide is Cyhalofop-butyl and phenoxy acetic acid herbicide is 2,4-Dichlorophenoxy acetic acid derivative.
Another objective of the present invention is to provide synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, aryloxyphenoxypropionate herbicide, at a weight in the ratio of 1 : 5 to 5 : 1 of first active ingredient to the second active ingredient, more preferably in the ratio of 1 : 3 to 3 : 1.
Another objective of the present invention is to provide synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, aryloxyphenoxypropionate herbicide, phenoxy acetic acid herbicide at a weight in the ratio of 1 : 1: 20 to 1 : 5 : 40 of first active ingredient to the second active ingredient and third active ingredient, more preferably in the ratio of 1 : 3 : 25.
Another objective of the present invention is to provide synergistic composition comprising combination of Bispyribac sodium and Cyhalofop-butyl.
Another objective of the present invention is to provide synergistic composition comprising combination of Bispyribac sodium and Cyhalofop-butyl and 2,4-Dichlorophenoxy acetic acid derivative (2,4-DEE or 2,4-D sodium salt).
Another objective of the present invention is to provide a process for the preparation of synergistic composition comprising combination of a pyrimidinyl carboxy herbicide and one or more phenoxy herbicides,

SUMMARY OF INVENTION
Accordingly, the present invention provides a synergistic composition comprising combination of a pyrimidine based herbicide and one or more phenoxy herbicides.
In one embodiment, the present invention provides a synergistic composition comprising:
a) pyrimidinyl carboxy herbicide,
b) one or more phenoxy herbicides sleeted from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide or combination thereof, and
c) agrochemical auxiliaries.
In one embodiment, the present invention provides a synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, one or more phenoxy herbicides selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide, wherein said pyrimidinyl carboxy herbicide is Bispyribac or its salts, aryloxyphenoxypropionate herbicide is Cyhalofop-butyl and phenoxy acetic acid herbicide is 2,4-Dichlorophenoxy acetic acid derivative.
In another embodiment, the present invention provides a synergistic composition comprising combination of a pyrimidinyl carboxy herbicide and one or more phenoxy herbicides selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide, wherein said composition is oil dispersion (OD) or wettable powders (WP).
In another embodiment, the present invention provides a synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, aryloxyphenoxypropionate herbicide at a weight in the ratio of 1 : 5 to 5 : 1 of first active ingredient to the second active ingredient, more preferably in the ratio of 1 : 3 to 3 : 1.
In another embodiment, the present invention provides a synergistic composition comprising combination of a pyrimidinyl carboxy herbicide, aryloxyphenoxypropionate herbicide, phenoxy acetic acid herbicide at a weight in the ratio of 1 : 1: 20 to 1 : 5 : 40 of first active ingredient to the second active ingredient and third active ingredient, more preferably in the ratio of 1 : 3 : 25.
In another embodiment, the present invention provides a synergistic herbicide composition comprising:
a) pyrimidinyl carboxy herbicide,
b) aryloxyphenoxypropionate herbicide,
c) rheology modifier,
d) wetting agent,
e) dispersing agent, and
f) other agrochemical auxiliaries.
In another embodiment, the present invention provides a synergistic herbicide composition comprising:
a) pyrimidinyl carboxy herbicide,
b) aryloxyphenoxypropionate herbicide,
c) phenoxy acetic acid herbicide,
d) rheology modifier,
e) wetting agents,
f) dispersing agent, and
g) other agrochemical auxiliaries.
In another embodiment, the present invention provides a synergistic herbicide composition comprising:
a) Bispyribac sodium,
b) Phenoxy herbicides selected from Cyhalofop-butyl and 2,4-Dichlorophenoxy acetic acid derivative or combinations thereof.
c) rheology modifier,
d) wetting agents
e) dispersing agents, and
f) other agrochemical auxiliaries.
In another embodiment, the present invention provides synergistic composition comprising combination of a pyrimidinyl carboxy herbicide and one or more phenoxy herbicides selected from aryloxyphenoxypropionate herbicide and phenoxy acetic acid herbicide, wherein said other agrochemical auxiliaries are selected from one or more of fillers, base oil and buffer.
In another embodiment, the present invention provides a composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) rheology modifiers in a range of 1% to 10% (w/w),
d) wetting agents in a range of 1% to 10% (w/w),
e) dispersing agents in a range of 1% to 10% (w/w), and
g) base oil in a range of 0.1% to 80% (w/w).
In another embodiment, the present invention provides a composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) 2,4-Dichlorophenoxy acetic acid derivative selected from Dichlorophenoxy acetic acid ethyl ester or 2,4- Dichlorophenoxy acetic acid sodium salt in a range of 10% to 50% (w/w),
d) rheology modifiers in a range of 1% to 10% (w/w),
e) wetting agents in a range of 1% to 10% (w/w),
f) dispersing agents in a range of 1% to 10% (w/w), and
g) other additives / auxiliaries in a range of 0.1% to 80% (w/w).
In another embodiment, the present invention provides an oil dispersion composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) polyalkoxylated butyl ether in a range of 1% to 10% (w/w),
d) benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol in a range of 1% to 10% (w/w),
e) ethoxylated tristyrylphenol in a range of 1% to 10% (w/w),
f) linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution in a range of 1% to 10% (w/w), and
g) methyl soyate in a range of 0.1% to 80% (w/w).
In another embodiment, the present invention provides an oil dispersion composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) Dichlorophenoxy acetic acid ethyl ester in a range of 10% to 50% (w/w),
d) polyalkoxylated butyl ether in a range of 1% to 10% (w/w),
e) benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol in a range of 1% to 10% (w/w),
f) ethoxylated tristyrylphenol in a range of 1% to 10% (w/w),
g) linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution in a range of 1% to 10% (w/w), and
h) methyl soyate in a range of 0.1% to 80% (w/w).
In another embodiment, the present invention provides a wettable powder composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) 2,4- Dichlorophenoxy acetic acid sodium salt in a range of 10% to 50% (w/w),
d) silicon dioxide in a range of 1% to 10% (w/w),
e) wetting agents selected from alkylnaphthalene sulfonate (ANS) condensate blend, dialkyl naphthalene sulphonate sodium salt, linear alcohol derivative and polyethyleneglycol nonylphenyl ether ammonium sulfate or mixtures thereof in a range of 1% to 10% (w/w),
f) dispersing agents selected from mixture of salt of naphthalene sulphonic acid and phenol sulphonic acid, sodium polyalkylnaphthalene sulphonate, phenol sulfonic acid-formaldehyde-polycondensation as sodium salt, acrylate copolymer, sodium salt of methyl naphthalene sulfonate, sodium polycarboxylate, sodium methyl oleoyl taurate, sodium lignosulphonate and sodium lauryl sulphate or mixtures thereof in a range of 1% to 10% (w/w),
g) precipitated silica in a range of 1% to 10% (w/w),
h) oxalic acid in a range of 0.01% to 5% (w/w), and
i) aluminium silicate in a range of 1% to 50% (w/w).
In another embodiment, the present invention provides a process for preparation comprising the steps of:
a) blending all the active ingredients, a rheology modifier, dispersing agent and other agrochemical auxiliaries to homogenization at a temperature in the range of 30 to 50 ?C,
b) milling the homogenised mixture to obtain particles of size in the range of 15-20 µ,
c) stirring the milled mixture, and cooling to room temperature, and
d) collecting the sample.
In another embodiment, the present invention provides a process for preparation of an oil dispersion composition comprising the steps of:
a) blending Bispyribac sodium, Cyhalofop-butyl, polyalkoxylated butyl ether, benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol, ethoxylated tristyrylphenol, linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution and methyl soyate to homogenization at a temperature in the range of 30 to 50 ?C,
b) milling the homogenised mixture to obtain particles of size in the range of 15-20 µ,
c) stirring the milled mixture, and cooling to room temperature, and
d) collecting the sample.
In another embodiment, the present invention provides a process for preparation of an oil dispersion composition comprising the steps of:
a) blending Bispyribac sodium, Cyhalofop-butyl, Dichlorophenoxy acetic acid ethyl ester, polyalkoxylated butyl ether, benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol, ethoxylated tristyrylphenol, linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution and methyl soyate to homogenization at a temperature in the range of 30 to 50 ?C,
b) milling the homogenised mixture to obtain particles of size in the range of 15-20 µ,
c) stirring the milled mixture, and cooling to room temperature, and
d) collecting the sample.
In another embodiment, the present invention provides a process for preparation of a wettable powder composition comprising the steps of:
a) weighing and blending all active agents and agrochemical auxiliaries at 30 rpm for 45 mins,
b) milling the mixture through jet mill to obtain the desired particle size (D90 ~ 10 micro),
c) collect the sample and post blend for 45 minutes to obtain the final homogeneous formulation product.
In another embodiment, the present invention provides a process for preparation of a wettable powder composition comprising the steps of:
a) weighing and blending Bispyribac sodium, Cyhalofop-butyl, 2,4- Dichlorophenoxy acetic acid sodium salt with rheology modifiers, wetting agents, dispersing agents and other agrochemical auxiliaries at 30 rpm for 45 mins,
b) milling the mixture through jet mill to obtain the desired particle size (D90 ~ 10 micro),
c) collect the sample and post blend for 45 minutes to obtain the final homogeneous formulation product.

DETAILED DESCRIPTION OF THE INVENTION
The term "comprising", which is synonymous with "including", "containing", or "characterized by" here is defined as being inclusive or open-ended, and does not exclude additional, unrecited elements or method steps, unless the context clearly requires otherwise.
The present invention provides composition comprising combination of Bispyribac or its salts and Cyhalofop-butyl in a ratio of 1 : 5 to 5 : 1 of first active ingredient to the second active ingredient, more preferably in the ratio of 1 : 3 to 3 : 1. However, variables of the ratios of each of the active ingredients can be used and the selection of the particular amount is dependent upon many factors including, for example, type of formulations, the crop, disease sought to be controlled and environmental conditions. The selection of the proper quantity of active agent to be applied, however, is within the expertise of one skilled in the art.
The present invention provides composition comprising combination of Bispyribac, Cyhalofop-butyl and 2,4-Dichlorophenoxy acetic acid derivative in a ratio of 1 : 1: 20 to 1 : 5 : 40 of first active ingredient to the second active ingredient and third active ingredient, more preferably in the ratio of 1 : 3 : 25. However, variables of the ratios of each of the active ingredients can be used and the selection of the particular amount is dependent upon many factors including, for example, type of formulations, the crop, disease sought to be controlled and environmental conditions. The selection of the proper quantity of active agent to be applied, however, is within the expertise of one skilled in the art.
The combination compositions of the present invention can be used on a paddy rice, dry-seeded rice crops. This product is also used as a foliar application in labeled crops.
The composition of the present invention could be applied to plants, seeds, fruits, soil as preventive and curative state.
The wetting agent is a compound that facilitates rapid wetting of the powder when added to the water. The wetting agent employed in the formulation composition is selected from the group consisting of non-ionic surfactants, anionic surfactant and a mixture of anionic and non-ionic surfactant and polymeric surfactant.
The wetting agent as used herein is selected from and not limited to polycondensation product of naphthalene sulfonic acid, which is alkyl naphthalene sulphonate sodium salt, dialkyl naphthalene sulphonate sodium salt (Supragil WP), alkylnaphthalene sulfonate (ANS) condensate blend (Morwet EFW), sodium alkyl naphthalene sulfonate (Morwet 3028), polyalkyl naphthalene sulphonate, Aqarius BP14332 Yellow IH, salts of alkylphenol condensates, salts of sulphonated lignins, salts of poly acid resin copolymers, salts of polyphenol formaldehyde resins, salts of polyarylether sulphates such as tristyrylphenolethoxylate sulphate salts, alkoxylated alkylphenols and alcohols as well as block copolymers of ethyleneoxide, linear alcohol derivative (Geropon L wet), tristyrylphenol ethoxylate (Sophrophor BSU), polyethyleneglycol nonylphenyl ether ammonium sulfate (Dispersol PS) and propylene oxide. Preferred wetting agent used in the composition of the present invention is sodium alkyl naphthalene sulfonate (Morwet 3028), linear alcohol derivative (Geropon L wet), tristyrylphenol ethoxylate (Sophrophor BSU), polyethyleneglycol nonylphenyl ether ammonium sulfate (Dispersol PS), dialkyl naphthalene sulphonate sodium salt (Supragil WP) and alkylnaphthalene sulfonate condensate blend (Morwet EFW).
The wetting agent is present in the composition in a range of about 1 to 10%, more preferably 2 to 8% of the total weight of the composition.
The compositions of the present invention contains dispersing agents selected from and not limited to sodium lignosulphonates, sodium lauryl sulphate, sodium naphthalene sulphonate formaldehyde condensates, sodium polyalkylnaphthalene sulphonate (Dispersol BB4), sodium polycarboxylate (Geropon T 36), sodium methyl oleoyltaurate (Geropon T 77), phenol sulfonic acid-formaldehyde-polycondensation as sodium salt (Tamol FBPP), sodium salt of methyl naphthalene sulfonate (Supragil MNS 90), phenol sulfonic acid-formaldehyde-polycondensation as sodium salt (Dispersol PSR19), calcium dodecylbenzene sulfonate (Rhodocal 60 BR), polyalkoxylated butyl ether (Ethylan NS 500 LQ), phenol sulfonic acid-formaldehyde (Tamol DN), tristyrylphenol ethoxylate phosphate esters, aliphatic alcohol ethoxylates, alky ethoxylates; EO-PO block copolymers, and graft copolymers, Acrylate copolymer (Agrilan 789), polycarboxylates, alkyl naphthalene sulfonates (such as Morwet IP, Morwet EFW), sodium salt of naphthalene sulfonate condensate (Morwet D-425), phenol sulphonic acid condensates, alkyl sulfonates, alkenyl sulfonates, mixture of alkyl sulfonates and alkenyl sulfonates (Lissapol D), alkyl suflosuccinates (Geropon), L-Wet, methyl oleyltaurates and poly vinyl alcohols.
The dispersing agent is present in the composition in a range of about 1 to 10%, more preferably 2 to 8% of the total weight of the composition.
The compositions of the present invention contain a rheology modifier which is selected from the group consisting of hydrophobic and hydrophilic fumed and precipitated silica particles, gelling clays including bentonite, hectorite, laponite, attapulgite, sepiolite, smectite, hydrophobically/organophilic modified bentonite, hectorite, hydrogentated castor oil (trihydroxystearin) or castor oil organic derivatives.
The rheology modifier is present in the composition in a range of about 1 to 10%, more preferably 1 to 6% of the total weight of the composition.
The compositions of the present invention contain a base oil as medium for suspension for the OD composition, which is selected from a vegetable or mineral oils or esters of vegetable or mineral oils.
Suitable vegetable oils are all oils which can customarily be employed in agrochemical agents and can be obtained from plants. By way of example, sunflower oil, rapeseed oil, olive oil, castor oil, colza oil, corn oil, cottonseed oil and soya bean oil (Epoxidized soybean oil (ESO)), Butylated hydroxytoluene (BHT), polyethyleneglycol or polypropyleneglycol chain or an ethylene glycol-propylene glycol copolymeric chain, or a mixture of these compounds may be mentioned. Possible esters are ethylhexyl palmitate, ethylhexyl oleate, ethylhexyl myristate, ethylhexyl caprylate, iso-propyl myristate, iso-propyl palmitate, methyl oleate, methyl soyate, methyl palmitate, ethyl oleate, by way of example, rape seed oil methyl ester, methyl soyate and ethylhexyl palmitate are preferred.
The base oil is present in the composition in a range of about 1 to 80%, more preferably 20 to 75% of the total weight of the composition.
The fillers as used in the present invention are includes but are not limited to natural minerals such as ammonium sulphate, calcite, talc, china clay series, and montmorillonite or attapulgite clays including various forms of bentonite, kaolin, lactose, starches, calcium carbonate, calcium sulphate, calcium phosphate, sodium tripoly phosphate (STPP), woodflours, activated carbon, sugars, diatomaceous earth, cereal flours, fine-grain inorganic solids, and the like. Clays and inorganic solids which may be used include aluminium silicate, calcium bentonite, perlite, mica, vermiculite, silicas, quartz powder, montmorillonite and mixtures thereof. Sugars which may be useful include dextrin and maltodextrin. Cereal flours include wheat flour, oat flour and barley flour and a mixture thereof. Preferred inert filler is china clay. Highly disperse silica or highly disperse absorptive polymers may also be used to improve physical properties.
The fillers are present in the composition in a range of about 1% to 50%, more preferably 20% to 40% of the total weight of the composition.
The compositions of the present invention contain buffers which are selected from the group consisting of acids and bases or combinations thereof. The buffers are selected from citric acid, malic acid, oxalic acid, NaOH, sodium citrate, phosphate buffer etc.
The buffers are present in the composition in a range of about 0.01% to 5%, more preferably 1% to 5% of the total weight of the composition.
Formulation includes water soluble concentrate (SL), an emulsifiable concentrate (EC), an emulsion (EW), a microemulsion (ME), a suspension concentrates (SC), an oil dispersions (OD), a flowable suspension (FS), water soluble powder (WS), water-dispersible granule (WDG), water-soluble granule (SG), wettable powders (WP), a water soluble powder (SP), a granule (GR), an encapsulated granule (CG), a fine granule (FG), a macrogranule (GG), an aqueous suspoemulsion (SE), capsule suspension (CS) and a microgranule (MG). Preferably the compositions of the present invention are in the form of oil dispersions (OD) or wettable powders (WP).
Preferably, the synergistic composition can be formulated as oil dispersions (OD). An oil dispersion (OD) is a stable suspension of active ingredient(s) in an organic fluid, which may contain other dissolved active ingredient(s), intended for dilution with water before use. OD formulations are metastable systems, like emulsions, oil-in-waters (EW) and suspension concentrates (SC). Therefore, after transportation and storage it may be necessary to re-homogenise the formulation, either by shaking or by stirring. OD, like SC formulations, do not disperse as spontaneously as EC formulations upon dilution in water. Therefore the spray solution has to be stirred in order to obtain a homogeneous dispersion before application.
The compositions of the present invention can be diluted with water or water solutions of agronomic compounds before use to produce a sprayable suspension composition, which is used in treating plants or increasing plant growth, dilution in water usually results in suspensions, emulsions, suspoemulsions or solutions of the agrochemical active ingredient at a concentration of at least 0.001 g/l.
A particular mode of administering the composition of the present invention is the administration to the aboveground parts of plants, in particular to the leaves thereof (leaf-application). The number of applications and the administered doses are chosen in accordance with the biological and climatic conditions of life of the causative agent. The antifungal compositions though, can also be applied to the soil and get into the plants through the root system (systemic activity), in case the locus of the plants is sprayed with a liquid composition or if the components are added to the soil in a solid formulation e.g. in the form of granulate (soil application).
When using the active compound combinations according to the invention, the application rate can be varied within a relatively wide range, depending on the kind of application. For the treatment of parts of plants, the active-compound combination application rates are generally between 0.1 and 10000 g/ha, preferably between 100 and 2500 g/ha. For seed dressing, the active compound combination application rates are generally between 0.001 and 50 g per kilogram of seed, preferably between 0.01 and 20 g per kilogram of seed. For the treatment of the soil, the active-compound combination application rates are generally between 0.1 and 10000 g/ha preferably between 1 and 5000 g/ha.
The following examples describes the nature of the invention which are given only for the purpose of illustrating the present invention in more detail and are not limitative and relate to solutions

EXAMPLES
Example 1: Composition of Bispyribac sodium 4% + Cyhaloflop butyl 12 % OD
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac sodium @ 98 (b) 4 % 4.08
2 Cyhalofop butyl Tech @98 (b) 12% 12.24
3 Benzenesulfonic acid, C10-13-alkyl derivs calcium salt 2-Ethylhexanol (Bentone 38) 1.0
4 Ethoxylated tristyrylphenol (Sophrophor BS 5.0
5 Linear dodecylbenzene sulphonate,calcium salt in 2-ethylexanol solution (Rhodocal 60 BR) 5.0
6 Polyalkoxylated butyl ether (Ethylan NS) 500 LQ 2.0
7 Methyl Soyate 70.68
Total 100

Manufacturing process:
All the raw materials were weighed, dispensed and the mixture was mixed in a homogenizer for 60 to 120 minutes at a temperature of 30 to 50 ?C. The mixture was milled to obtain the desired particle size (D90 ~ 20 micro) and stirred for another 4 hours. The oil suspension was cooled and collected.

Example 2: Composition of Bispyribac sodium 2% + Cyhalofop butyl 6 % + 2,4 DEE 50 % OD
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac Na @98 % (b) 2.0 % 2.04
2 Cyhalofop butyl Tech @98 (b) 6.0% 6.12
3 2,4-DEE @96 (b) 50 % 52.08
4 Benzenesulfonic acid, C10-13-alkyl derivs calcium salt 2-Ethylhexanol (Bentone 38) 1.0
5 Ethoxylated tristyrylphenol (Sophrophor BSU) 5.0
6 Linear dodecylbenzene sulphonate,calcium salt in 2-ethylexanol solution (Rhodocal 60 BR) 5.0
7 Polyalkoxylated butyl ether (Ethylan NS 500 LQ) 5.0
8 Methyl Soyate 23.76
Total 100

Manufacturing Process:
All the raw materials were weighed, dispensed and the mixture was mixed in a homogenizer for 60 to 120 minutes at a temperature of 30 to 50 ?C. The mixture was milled to obtain the desired particle size (D90 ~ 20 micro) and stirred for another 4 hours. The oil suspension was cooled and collected.

Example 3: Composition of Bispyribac sodium 2% + Cyhalofop butyl 6 % + 2,4 DEE 50 % WP
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac Na @98 % (b) 2.0 % 2.04
2 Cyhalofop butyl @99 (b) 6.0 % 6.06
3 2,4 D Na @ 95 % (b) 50 % 52.631
4 Alkylnaphthalene sulfonate (ANS) condensate blend (Morwet EFW) 4.0
5 Mixture of salt of naphthalene sulphonic acid and phenol sulphonic acid (Tamol DN) 2.0
6 Sodium polyalkylnaphthalene sulphonate (Dispersol BB4) 2.0
7 Precipitated silica 1.5
8 Oxalic acid 0.2
9 Aluminium silicate (China clay) 29.57
Total 100

Manufacturing Process:
All the raw materials were weighed in the sigma blender and start mixing at 30 rpm for 45 mins. The mixture was milled through jet mill to obtain the desired particle size (D90 ~ 10 micro). Collect the sample and post blend for 45 min. to obtain the final homogeneous formulation product

Example 4: Composition of Bispyribac sodium 2% + Cyhalofop butyl 6 % + 2,4 DEE 50 % WP
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac Na @98 % (b) 2.0 % 2.04
2 Cyhalofop butyl @99 (b) 6.0 % 6.06
3 2,4 D Na @ 95 % (b) 50 % 52.631
4 Alkylnaphthalene sulfonate (ANS) condensate blend (Morwet 3028) 4.0
5 Phenol sulfonic acid-formaldehyde-polycondensation as sodium salt (Tamol FBPP) 2.0
6 Acrylate copolymer (Agrilan 789) 2.0
7 Precipitated silica 1.5
8 Oxalic acid 0.2
9 Aluminium silicate (China clay) 29.57
Total 100

Manufacturing Process:
All the raw materials were weighed in the sigma blender and start mixing at 30 rpm for 45 mins. The mixture was milled through jet mill to obtain the desired particle size (D90 ~ 10 micro). Collect the sample and post blend for 45 min. to obtain the final homogeneous formulation product

Example 5: Composition of Bispyribac sodium 2% + Cyhalofop butyl 6 % + 2,4 DEE 50 % WP
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac Na @98 % (b) 2.0 % 2.04
2 Cyhalofop butyl @99 (b) 6.0 % 6.06
3 2,4 D Na @ 95 % (b) 50 % 52.631
4 Dialkyl naphthalene sulphonate sodium salt (Supragil WP) 4.0
5 Sodium salt of methyl naphthalene sulfonate (Supragil MNS 90) 2.0
6 Phenol sulfonic acid-formaldehyde-polycondensation as sodium salt (Dispersol PSR19) 2.0
7 Precipitated silica 1.5
8 Oxalic acid 0.2
9 Aluminium silicate (China clay) 29.57
Total 100

Manufacturing Process:
All the raw materials were weighed in the sigma blender and start mixing at 30 rpm for 45 mins. The mixture was milled through jet mill to obtain the desired particle size (D90 ~ 10 micro). Collect the sample and post blend for 45 min. to obtain the final homogeneous formulation product

Example 6: Composition of Bispyribac sodium 2% + Cyhalofop butyl 6 % + 2,4 DEE 50 % WP
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac Na @98 % (b) 2.0 % 2.04
2 Cyhalofop butyl @99 (b) 6.0 % 6.06
3 2,4 D Na @ 95 % (b) 50 % 52.631
4 Linear alcohol derivative (Geropon L wet) 4.0
5 Sodium polycarboxylate (Geropon T 36) 2.0
6 Sodium methyl oleoyl taurate (Geropon T 77) 2.0
7 Precipitated silica 1.5
8 Oxalic acid 0.2
9 Aluminium silicate (China clay) 29.57
Total 100

Manufacturing Process:
All the raw materials were weighed in the sigma blender and start mixing at 30 rpm for 45 mins. The mixture was milled through jet mill to obtain the desired particle size (D90 ~ 10 micro). Collect the sample and post blend for 45 min. to obtain the final homogeneous formulation product

Example 7: Composition of Bispyribac sodium 2% + Cyhalofop butyl 6 % + 2,4 DEE 50 % WP
S. No. Ingredients/Raw Materials Quantity (% w/w)
1 Bispyribac Na @98 % (b) 2.0 % 2.04
2 Cyhalofop butyl @99 (b) 6.0 % 6.06
3 2,4 D Na @ 95 % (b) 50 % 52.631
4 Polyethyleneglycol nonylphenyl ether ammonium sulfate (Dispersol PS) 4.0
5 Sodium lignosulphonate 2.0
6 Sodium lauryl sulphate 2.0
7 Precipitated silica 1.5
8 Oxalic acid 0.2
9 Aluminium silicate (China clay) 29.57
Total 100

Manufacturing Process:
All the raw materials were weighed in the sigma blender and start mixing at 30 rpm for 45 mins. The mixture was milled through jet mill to obtain the desired particle size (D90 ~ 10 micro). Collect the sample and post blend for 45 min. to obtain the final homogeneous formulation product

FIELD EFFICACY STUDIES

Field Efficacy Studies of Bispyribac sodium + Cyhalofop OD
Weeds were reported to reduce rice yields by 12% to 98%, depending on type of method of rice establishment. Rice yield losses due to uncontrolled weed growth and weed competition were least (12%) in transplanted rice and highest in aerobic direct-seeded rice. Traditionally, weed control in India has been largely dependent on manual weeding. However, increased labour scarcity and costs are encouraging farmers to adopt to use herbicides.
The field studies were conducted to compare the weed controlling activity of the combination of Bispyribac sodium + Cyhalofop. The active ingredient, Bispyribac sodium belongs to chemical family “Sulfonylurea” with mode of action ALS inhibitors (inhibition of acetolactate synthase), Cyhalofop-butyl comes under chemical family “Aryloxyphenoxypropionates” with ACCase (inhibition of Acetyl CoA Carboxylase) mode of action. The combination has the potential of controlling the cross-spectrum weeds (broad leaf weeds, grassy weeds, and sedges) in rice. Both the molecules are safe to transplanted and direct seeded rice when applied in post-emergence (15-20 days after transplanting) application timing.
The weed control activity of the individual herbicides of the invention and their combinations were evaluated on weeds such as Cyperus difformis, Cyperus rotundus, Echinochloa colonum, Eragrostis Pilosa, Monochoria vaginalis and Ludwigia parviflora. Trials were conducted with randomized block design with net plot size of 5m x 6m. Each trial was replicated four times and conducted under GEP guidelines. Spraying was done with manual operated backpack knapsack sprayer with 300 L of water spray volume per hectare at post-emergence (15-20 days after transplanting) application timing. Such field trials were carried out at various locations to generate independent data, the locations were chosen randomly across India. Visual observations were recorded on percent weed control for individual weeds on whole plot basis at 15 days after application. These observations are to be taken from entire plot. The herbicide tank mix combinations, application rates, plant species tested, and results are given in the following tables:

Table 1: Table 1 demonstrates synergy on weeds using the combination of Bispyribac sodium + Cyhalofop. The field trials were carried out in India at various locations. The percentage efficacy was calculated after 15 days of application. The target weeds were Cyperus rotundus and Cyperus difformis and the results are recorded in the tables 1 below:

Active Dose (GAH) % Weed Control of Cyperus rotundus % Weed Control of Cyperus difformis
Bispyribac sodium 30 70 50
Cyhalofop 90 30 40
Bispyribac sodium + Cyhalofop OD (Example 1) 30 + 90 90 85

The results in table 1 clearly demonstrate synergy between Bispyribac sodium + Cyhalofop against weeds like, Cyperus rotundus and Cyperus difformis.

Table 2: Table 2 demonstrates synergy on weeds using the combination of Bispyribac sodium + Cyhalofop. The field trials were carried out in India at various locations. The percentage efficacy was calculated after 15 days of application. The target weeds were Echinochloa colonum and Eragrostis pilosa and the results are recorded in the tables 2 below:

Active Dose (GAH) % Weed Control of Echinochloa colonum % Weed Control of Eragrostis pilosa
Bispyribac sodium 30 70 80
Cyhalofop 90 60 65
Bispyribac sodium + Cyhalofop OD (Example 1) 30 + 90 100 100

The results in table 2 clearly demonstrates efficacy of Bispyribac sodium + Cyhalofop against weeds like Echinochloa colonum and Eragrostis Pilosa.

Table 3: Table 3 demonstrates synergy on weeds using the combination of Bispyribac sodium + Cyhalofop. The field trials were carried out in India at various locations. The percentage efficacy was calculated after 15 days of application. The target weeds were Monochoria vaginalis and Ludwigia parviflora and the results are recorded in the tables 3 below:

Active Dose (GAH) % Weed Control of Monochoria vaginalis % Weed Control of Ludwigia parviflora
Bispyribac sodium 30 60 80
Cyhalofop 90 50 65
Bispyribac sodium + Cyhalofop OD (Example 1) 30 + 90 90 100

The results in table 3 clearly demonstrates efficacy of Bispyribac sodium + Cyhalofop against weeds like, Monochoria vaginalis and Ludwigia parviflora.

Field efficacy studies of Bispyribac sodium + Cyhalofop + 2,4 D EE (OD)
Weeds were reported to reduce rice yields by 12 to 98%, depending on type method of rice establishment. Rice yield losses due to uncontrolled weed growth and weed competition were least (12%) in transplanted rice and highest in aerobic direct-seeded rice. Traditionally, weed control in India has been largely dependent on manual weeding. However, increased labour scarcity and costs are encouraging farmers to adopt to use herbicides.
The field studies were conducted to compare the weed controlling activity of the combination of Bispyribac sodium + Cyhalofop + 2,4 D EE OD. The active ingredient, Bispyribac sodium belongs to chemical family “Sulfonylurea” with mode of action ALS inhibitors (inhibition of acetolactate synthase), Cyhalofop-butyl comes under chemical family “Aryloxyphenoxypropionates” with ACCase (inhibition of Acetyl CoA Carboxylase) mode of action and 2,4-DEE belongs to chemical family Phenoxy-carboxylic-acids with “Synthetic auxin” mode of action. The combination has the potential of controlling the cross-spectrum weeds (broad leaf weeds, grassy weeds, and sedges) in rice. Both the molecules are safe to transplanted and direct seeded rice when applied in post-emergence (15-20 days after transplanting) application timing.
The weed control activity of the individual herbicides of the invention and their combinations were evaluated on weeds such as Cyperus difformis, Cyperus rotundus, Echinochloa colonum, Eragrostis Pilosa, Monochoria vaginalis and Ludwigia parviflora. Trials were conducted with randomized block design with net plot size of 5m x 6m. Each trial was replicated four times and conducted under GEP guidelines. Spraying was done with manual operated backpack knapsack sprayer with 300 L of water spray volume per hectare at post-emergence (15-20 days after transplanting) application timing. Such field trials were carried out at various locations to generate independent data, the locations were chosen randomly across India. Visual observations were recorded on percent weed control for individual weeds on whole plot basis at 15 days after application. These observations are to be taken from entire plot. The herbicide tank mix combinations, application rates, plant species tested, and results are given in the following tables:

Table 4: Table 4 demonstrates synergy on weeds using the combination of Bispyribac sodium + Cyhalofop + 2,4 D EE. The field trials were carried out in India at various locations. The percentage efficacy was calculated after 15 days of application. The target weeds were Cyperus rotundus and Cyperus difformis and the results are recorded in the tables 4 below.
Active Dose (GAH) % Weed Control of Cyperus rotundus % Weed Control of Cyperus difformis
Bispyribac sodium SC 30 70 50
Cyhalofop EC 90 30 40
2,4-D EE SL 750 60 60
Bispyribac sodium + Cyhalofop + 2,4 D EE (OD) (Example 2) 30 + 90 + 750
100
100

The results in table 4 clearly demonstrates synergy between Bispyribac sodium + Cyhalofop + 2,4 D EE against weeds like, Cyperus rotundus and Cyperus difformis.

Table 5: Table 5 demonstrates synergy on weeds using the combination of Bispyribac sodium + Cyhalofop + 2,4 D EE. The field trials were carried out in India at various locations. The percentage efficacy was calculated after 15 days of application. The target weeds were Echinochloa colonum and Eragrostis pilosa and the results are recorded in the tables 5 below.
Active Dose (GAH) % Weed Control of Echinochloa colonum % Weed Control of Eragrostis pilosa
Bispyribac sodium SC 30 70 80
Cyhalofop EC 90 60 65
2,4-D EE SL 750 0 0
Bispyribac sodium + Cyhalofop + 2,4 DEE (OD) (Example 2) 30 + 90 + 750
100
100

The results in table 5 clearly demonstrates efficacy of Bispyribac sodium + Cyhalofop + 2,4 D EE against weeds like Echinochloa colonum and Eragrostis Pilosa.

Table 6: Table 6 demonstrates synergy on weeds using the combination of Bispyribac sodium + Cyhalofop + 2,4 D EE. The field trials were carried out in India at various locations. The percentage efficacy was calculated after 15 days of application. The target weeds were Monochoria vaginalis and Ludwigia parviflora and the results are recorded in the tables 6 below.
Active Dose (GAH) % Weed Control of Monochoria vaginalis % Weed Control of Ludwigia parviflora
Bispyribac sodium SC 30 60 80
Cyhalofop EC 90 50 65
2,4-D EE SL 750 75 70
Bispyribac sodium + Cyhalofop + 2,4 D EE (OD) (Example 2) 30 + 90 + 750
100
100

The results in table 6 clearly demonstrates efficacy of Bispyribac sodium + Cyhalofop + 2,4 D EE against weeds like, Monochoria vaginalis and Ludwigia parviflora.

,CLAIMS:WE CLAIM:
1. A synergistic herbicide composition comprising:
a) Bispyribac sodium,
b) Phenoxy herbicides selected from Cyhalofop-butyl and 2,4-Dichlorophenoxy acetic acid derivative or combinations thereof,
c) rheology modifier,
d) wetting agents,
e) dispersing agents, and
f) other agrochemical auxiliaries.
2. The composition as claimed in claim 1, wherein said composition is oil dispersion (OD) or wettable powders (WP).
3. The composition as claimed in claim 1, wherein said rheology modifier is selected from hydrophobic and hydrophilic fumed and precipitated silica particles, gelling clays including bentonite, hectorite, laponite, attapulgite, sepiolite, smectite, hydrophobically/organophilic modified bentonite, hectorite, hydrogentated castor oil (trihydroxystearin) or castor oil organic derivatives or combinations thereof.
4. The composition as claimed in claim 1, wherein said wetting agents selected from polycondensation product of naphthalene sulfonic acid, which is alkyl naphthalene sulphonate sodium salt, dialkyl naphthalene sulphonate sodium salt, alkylnaphthalene sulfonate (ANS) condensate blend, sodium alkyl naphthalene sulfonate, polyalkyl naphthalene sulphonate, salts of sulphonated lignins, salts of poly acid resin copolymers, salts of polyphenol formaldehyde resins, salts of polyarylether sulphates such as tristyrylphenolethoxylate sulphate salts, alkoxylated alkylphenols and alcohols as well as block copolymers of ethyleneoxide, linear alcohol derivative, tristyrylphenol ethoxylate, polyethyleneglycol nonylphenyl ether ammonium sulfate and propylene oxide or mixtures thereof.
5. The composition as claimed in claim 1, wherein said dispersing agents selected from sodium lignosulphonates, sodium lauryl sulphate, sodium naphthalene sulphonate formaldehyde condensates, sodium polyalkylnaphthalene sulphonate, sodium polycarboxylate, sodium methyl oleoyltaurate, phenol sulfonic acid-formaldehyde-polycondensation as sodium salt, sodium salt of methyl naphthalene sulfonate, phenol sulfonic acid-formaldehyde-polycondensation as sodium salt, calcium dodecylbenzene sulfonate, polyalkoxylated butyl ether, phenol sulfonic acid-formaldehyde, tristyrylphenol ethoxylate phosphate esters, aliphatic alcohol ethoxylates, alky ethoxylates, EO-PO block copolymers, graft copolymers, acrylate copolymer, polycarboxylates, alkyl naphthalene sulfonates, sodium salt of naphthalene sulfonate condensate, phenol sulphonic acid condensates, alkyl sulfonates, alkenyl sulfonates, mixture of alkyl sulfonates and alkenyl sulfonates, alkyl suflosuccinates, methyl oleyltaurates and poly vinyl alcohols or mixtures thereof.
6. The composition as claimed in claim 1, wherein said other agrochemical auxiliaries are selected from one or more of fillers, base oil and buffer.
7. The composition as claimed in claim 6, wherein said fillers are selected from ammonium sulphate, calcite, talc, china clay series, and montmorillonite or attapulgite clays including various forms of bentonite, kaolin, lactose, starches, calcium carbonate, calcium sulphate, calcium phosphate, sodium tripoly phosphate (STPP), woodflours, activated carbon, sugars, diatomaceous earth, cereal flours, fine-grain inorganic solids, clays and inorganic solids include aluminium silicate, calcium bentonite, perlite, mica, vermiculite, silicas, quartz powder, montmorillonite and mixtures thereof.
8. The composition as claimed in claim 6, wherein said base oil is selected from sunflower oil, rapeseed oil, olive oil, castor oil, colza oil, corn oil, cottonseed oil and soya bean oil (epoxidized soybean oil (ESO)), polyethyleneglycol or polypropyleneglycol chain or an ethylene glycol-propylene glycol copolymeric chain, or a mixture of these compounds may be mentioned, possible esters are ethylhexyl palmitate, ethylhexyl oleate, ethylhexyl myristate, ethylhexyl caprylate, iso-propyl myristate, iso-propyl palmitate, methyl oleate, methyl soyate, methyl palmitate and ethyl oleate.

9. The composition as claimed in claim 6, wherein said buffers are selected from group consisting of acids and bases or combinations thereof, the buffers are selected from citric acid, malic acid, oxalic acid, NaOH, sodium citrate, phosphate buffer etc.
10. The composition as claimed in claims 1 to 9, wherein said oil dispersion composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) polyalkoxylated butyl ether in a range of 1% to 10% (w/w),
d) benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol in a range of 1% to 10% (w/w),
e) ethoxylated tristyrylphenol in a range of 1% to 10% (w/w),
f) linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution in a range of 1% to 10% (w/w), and
g) methyl soyate in a range of 0.1% to 80% (w/w).
11. The composition as claimed in claims 1 to 9, wherein said oil dispersion composition comprising:
a) Bispyribac sodium in a range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),
c) Dichlorophenoxy acetic acid ethyl ester in a range of 10% to 50% (w/w),
d) polyalkoxylated butyl ether in a range of 1% to 10% (w/w),
e) benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol in a range of 1% to 10% (w/w),
f) ethoxylated tristyrylphenol in a range of 1% to 10% (w/w),
g) linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution in a range of 1% to 10% (w/w), and
h) methyl soyate in a range of 0.1% to 80% (w/w).
12. The composition as claimed in claims 1 to 9, wherein said wettable powder composition comprising:
a) Bispyribac sodium in the range of 1% to 10 % (w/w),
b) Cyhalofop-butyl in a range of 1% to 10% (w/w),,
c) Dichlorophenoxy acetic acid sodium salt in a range of 10% to 50% (w/w),,
d) silicon dioxide in a range of 1% to 10% (w/w),
e) wetting agents selected from alkylnaphthalene sulfonate (ANS) condensate blend, dialkyl naphthalene sulphonate sodium salt, linear alcohol derivative and polyethyleneglycol nonylphenyl ether ammonium sulfate or mixtures thereof in a range of 1% to 10% (w/w),
f) dispersing agents selected from mixture of salt of naphthalene sulphonic acid and phenol sulphonic acid, sodium polyalkylnaphthalene sulphonate, phenol sulfonic acid-formaldehyde-polycondensation as sodium salt, acrylate copolymer, sodium salt of methyl naphthalene sulfonate, sodium polycarboxylate, sodium methyl oleoyl taurate, sodium lignosulphonate and sodium lauryl sulphate or mixtures thereof in a range of 1% to 10% (w/w),
g) precipitated silica in a range of 1% to 10% (w/w),
h) oxalic acid in a range of 0.01% to 5% (w/w), and
i) aluminium silicate in range of 1% to 50% (w/w).
13. The process for the preparation of composition as claimed in claim 1, wherein said process comprising steps of:
a) blending all the active ingredients, a rheology modifier and dispersing agent and other agrochemical auxiliaries to homogenization at a temperature in the range of 30 to 50 ?C,
b) milling the homogenised mixture to obtain particles of size in the range of 15-20 µ,
c) stirring the milled mixture, and cooling to room temperature, and
d) collecting the sample.
14. The process for the preparation of oil dispersion composition as claimed in claim 10, wherein said process comprising steps of:
a) blending Bispyribac sodium, Cyhalofop-butyl, polyalkoxylated butyl ether, benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol, ethoxylated tristyrylphenol, linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution and methyl soyate to homogenization at a temperature in the range of 30 to 50 ?C,
b) milling the homogenised mixture to obtain particles of size in the range of 15-20 µ,
c) stirring the milled mixture, and cooling to room temperature, and
d) collecting the sample.
15. The process for the preparation of oil dispersion composition as claimed in claim 11, wherein said process comprising steps of:
a) blending Bispyribac sodium, Cyhalofop-butyl, Dichlorophenoxy acetic acid ethyl ester, polyalkoxylated butyl ether, benzenesulfonic acid, C10-13-alkyl derivatives calcium salt 2-ethylhexanol, ethoxylated tristyrylphenol, linear dodecylbenzene sulphonate, calcium salt in 2-ethylexanol solution and methyl soyate to homogenization at a temperature in the range of 30 to 50 ?C,
b) milling the homogenised mixture to obtain particles of size in the range of 15-20 µ,
c) stirring the milled mixture, and cooling to room temperature, and
d) collecting the sample.
16. The process for the preparation of composition as claimed in claim 1, wherein said process comprising steps of:
a) weighing and blending Bispyribac sodium, Cyhalofop-butyl, 2,4- Dichlorophenoxy acetic acid sodium salt with rheology modifiers, wetting agents, dispersing agents and other agrochemical auxiliaries at 30 rpm for 45 mins,
b) milling the mixture through jet mill to obtain the desired particle size (D90 ~ 10 micro),
c) collect the sample and post blend for 45 minutes to obtain the final homogeneous formulation product.

Dated this Twenty Fourth (24th) day of August, 2021

__________________________________
Dr. S. Padmaja
Agent for the Applicant
IN/PA/883