Pesticidal composition

Patent metadata

Field	Value
Publication number	US-9839218-B2
Application number	US-201013519922-A
Country	US
Kind code	B2
Filing date	Dec 28, 2010
Priority date	Dec 29, 2009
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

Stable, single-phase pesticidal emulsifiable concentrates are provided which comprise (a) a pesticide mixture comprising a major amount of a water-insoluble pesticide and a minor amount of a water-soluble pesticidal salt; (b) a solvent system comprising (i) a major amount of an organic solvent comprising at least one non aqueous polar solvent; and (ii) a minor amount of water; and, optionally, (c) an emulsifying surfactant system enabling an oil in water emulsion to be formed when the concentrate formulation is diluted upon addition to water.

First claim

We claim:

1. A stable, single-phase emulsifiable concentrate, comprising
(a) a pesticide mixture comprising
a major amount of at least one water-insoluble pesticide selected from an ester of fluroxypyr and an ester of bromoxynil, and
a minor amount of at least one water-soluble pesticidal salt, wherein the water-soluble pesticide is selected from a salt of 3,6-dichloro-2-methoxybenzoic acid (dicamba),
wherein the weight ratio of water-insoluble pesticide to water-soluble pesticidal salt is from 10:1 to 1.01:1;

(b) a solvent system comprising
(i) a major amount of a solvent comprising at least one non aqueous polar solvent, wherein the polar solvent is selected from the group consisting of tetrahydrofurfuryl alcohol, dipropyleneglycol monomethylether and mixtures thereof;
(ii) at least one aromatic hydrocarbon; and
(iii) water, which is present in an amount up to 12.6% by weight; and

(c) an emulsifying surfactant system which is effective in forming an oil-in-water emulsion when the emulsifiable concentrate is added to water, wherein the resultant oil-in-water emulsion has a volume-weighted median diameter as measured by diffraction light scattering in excess of 10 nm.

2. The emulsifiable concentrate according to claim 1 , wherein the aromatic hydrocarbon comprises a mixture of aromatic hydrocarbons.

3. The emulsifiable concentrate according to claim 1 , wherein the ester of fluroxypyr is fluroxypyr meptyl ester.

4. The emulsifiable concentrate according to claim 1 , wherein the ester of bromoxynil is bromoxynil octanoate.

5. The emulsifiable concentrate according to claim 1 , wherein the water-insoluble pesticide further includes at least one pesticide selected from the group consisting of pinoxaden, fenoxaprop-p, clodinafop and propiconazole.

6. The emulsifiable concentrate according to claim 1 , wherein the dicamba salt is selected from the group consisting of sodium, potassium, ammonia, dimethylamine, diethylamine, triethylamine, monoethanolamine, diethanolamine, 2-hydroxyethylammonium, aminoethoxyethanol, triisopropanolamine, tris(2-hydroxypropyl)amine, aminopropylmorpholine and triethanolamine.

7. The emulsifiable concentrate according to claim 6 , wherein the dicamba salt is the aminoethoxyethanol salt of dicamba.

8. The emulsifiable concentrate according to claim 1 , wherein the polar solvent has a Hansen polarity parameter greater than 2.

9. The emulsifiable concentrate according to claim 1 , wherein the water content is greater than 3% by weight of the composition.

10. The emulsifiable concentrate according to claim 1 , wherein the emulsifying surfactant system comprises at least one alkyl polyglycoside surfactant.

11. The emulsifiable concentrate according to claim 1 , wherein the emulsifying surfactant system comprises at least one alkylene oxide surfactant.

12. The emulsifiable concentrate according to claim 1 , wherein the emulsifying surfactant system comprises a mixture of at least one alkyl polyglycoside and at least one propylene-oxide/ethylene-oxide copolymer.

13. A method for controlling weeds in crops of useful plants, said method comprising treating the plants, plant parts or locus thereof with a herbicidally effective amount of an EC composition according to claim 1 or a dilute herbicidal spray composition or oil-in-water emulsion formed when the EC composition is added to an aqueous liquid carrier.

Assignees

• Miln Colin D
• Ramachandran Ravi
• Capuzzi Giulia
• Syngenta Crop Protection Llc

Inventors

• Miln Colin D
• Ramachandran Ravi
• Capuzzi Giulia

Classifications

• A01N37/40

  having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system · CPC title

• A01N37/10

  Aromatic or araliphatic carboxylic acids, or thio analogues thereof; Derivatives thereof · CPC title

• A01N37/44

  containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids · CPC title

• A01N2300/00

  Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48 · CPC title

• A01N25/04

  Dispersions, {emulsions, suspoemulsions, suspension concentrates} or gels (foams A01N25/16) · CPC title