Patent EA-004575-B1 (EA)
Title: Herbicidal emulsifiable concentrate compositions of dinitroaniline and oxyacetamide herbicides
Inventor: BAKER IVOR PHILIP
IPC: A01N43/82
Filed: 2000-06-20
Abstract: 1. A herbicidal emulsifiable concentrate composition which comprises, on a weight to weight basis, about15% to 40% of a dinitroaniline herbicide, about 1% to 10% of an oxyacetamide herbicide, about 0.01% to 1% phosphoric acid, up to about 30% of an emulsifier or mixture of emulsifiers, up to about 1% of an antifoaming agent, and an organic solvent or mixture of organic solvents. 2. The composition according to Claim 1 wherein the emulsifier or mixture of emulsifiers comprises about 2% to 10% of an alkylarylsulfonate, about 0.5% to 5% of a polyalkylene glycol ether and about 1% to 5% of an ethoxylated fatty alcohol, and the organic solvent or mixture of organic solvents is an aromatic hydrocarbon solvent having a distillation range of about135 C to 305 degree C. 3. The composition according to Claim 1 which comprises, on a weight to weight basis, about 25% to 35% pendimethalin, about 4% to 8% fluthiamid, about 0.05% to 0.2% phosphoric acid, about 2% to 6% of a dodecylbenzenesulfonate, about 1% to 3% of an alkyl capped ethylene oxide/propylene oxide block copolymer, about 1% to 5% of an ethoxylated C10-C16 fatty alcohol having about 8 to 12 moles of ethylene oxide per mole, up to about 1% of an antifoaming agent, and an aromatic hydrocarbon solvent having a distillation range of about 135 C to 305 degree C. 4. The composition according to Claim 1 wherein the ratio of the oxyacetamide herbicide to the phosphoric acid on a weight basis is about 30: 1 to 100: 1. 5. The composition according to Claim 4 wherein the ratio is about 40: 1 to 70: 1. 6. The composition according to Claim 1 wherein the emulsifier is selected from the group consisting of an alkylarylsufonate, a polyalkylene glycol ether, and an ethoxylated fatty alcohol, and mixtures thereof. 7. The composition according to Claim 6 wherein the alkylarylsulfonate is a C8-C18 alkylbenzenesulfonate; the polyalkylene glycol ether is an alkyl capped ethylene oxide/propylene oxide block copolymer, and the ethoxylated fatty alcohol is an ethoxylated C10-C16 fatty alcohol having about 8 to 12 moles of ethylene oxide per mole. 8. The composition according to Claim 1 wherein the antifoaming agent is present. 9. The composition according to Claim 1 wherein the dinitroaniline herbicide has the structural formula I wherein R is hydrogen, C2-C4alkyl or chloroethyl; R1 isC2-C5 alkyl, chloroethyl, 2-methallyl or cyclopropylmethyl; R2 is hydrogen, methyl or amino; and R3 is trifluoromethyl, C1-C3alkyl, SO2NH2 or SO2CH3. 10. The composition according to Claim 1 wherein the dinitroaniline herbicide is selected from the group consisting of pendimethalin and trifluralin. 11. The composition according to Claim 1 wherein the dinitroaniline herbicide is pendimethalin. 12. The composition according to Claim 1 wherein the oxyacetamide herbicide has the structural formula II wherein R4 is hydrogen, F, Cl, Br, C1-C4alkyl, C1-C4haloalkyl, C1-C4alkylsulfonyl or C1-C4alkoxy, C1-C4haloalkoxy, C1-C4haloalkylsulfonyl; R5 is hydrogen or C1-C6alkyl; and R6 is phenyl optionally substituted with any combination of from one to three F, Cl, Br, CN, NO2, C1-C4alkyl, C1-C4haloalkyl, C1-C4alkoxy or C1-C4haloalkoxy groups. 13. The composition according to Claim 12 wherein R4 is C1-C4haloalkyl; R5 is C1-C4alkyl; and R6 is phenyl optionally substituted with any combination of one or two F, Cl or C1-C4alkyl groups. 14. The composition according to Claim 13 wherein R4 is CF3, CHF2 or CFCl2; R5 is isopropyl; and R6 is selected from the group consisting of phenyl, 3-chlorophenyl, 4-chlorophenyl, 2-fluorophenyl, 4-fluorophenyl, 2-methylphenyl, 3-methylphenyl, 4-methylphenyl and 3,4-dimethylphenyl. 15. The composition according to Claim 1 wherein the oxyacetamide herbicide is fluthiamid. 16. The composition according to Claim 1 wherein the organic solvent is an aromatic hydrocarbon solvent having a distillation range of about 135 degree C to 305 degree C. 17. The composition according to Claim 16 wherein the distillation range is about 183 degree C to 290 degree C. 18. An aqueous tank mixture which comprises water and a composition as described in Claim 1.