Non-aqueous or low-water suspension concentrates of mixtures of active compounds for crop protection

• US 6,479,432 B1
• Filed: 10/24/2000
• Issued: 11/12/2002
• Est. Priority Date: 10/26/1999
• Status: Expired due to Term

• Current Assignee: Bayer Intellectual Property GmbH (Bayer AG)
• Original Assignee: Aventis Corpscience GmbH
• Inventors: Sixl, Frank
• Primary Examiner(s): CLARDY, S
• Application Number:
  US09/694,872
• Time in Patent Office: 749 Days
• Field of Search: 504/103, 504/106, 504/107, 504/135, 504/136
• US Class Current: 504/103
• CPC Class Codes: A01N 2300/00 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 Class Codes: A01N 25/04 Dispersions, emulsions, suspoemulsions, suspension concentrates or gels foams A01N25/16
• CPC Class Codes: A01N 47/36 containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof

Abstract

The invention relates to stable liquid and highly effective suspension concentrates comprising

a) one or more solid herbicidally active compounds from the group of the sulfonylureas in suspended form,

b) one or more active compounds which are partially or completely dissolved in component c),

c) an organic solvent or solvent mixture,

d) one or more nonionic emulsifiers,

e) optionally one or more ionic emulsifiers,

f) optionally one or more thickeners or thixotropic agents and no water or up to 30 percent by weight of water in dissolved form.

Claims

1. A preparation in the form of a liquid suspension concentrate, which comprises

a) one or more solid herbicidally active compounds from the group of sulfonylureas in suspended form wherein the sulfonylureas are selected from the group consisting of

A1) phenyl- and benzylsulfonylureas or salts thereof,

A2) thienylsulfonylureas or salts thereof, and

A4) sulfonyldiamide-derivatives or salts thereof,

A6) alkoxyphenoxysulfonylureas or salts thereof,

b) one or more active ingredients which are partially or completely dissolved in component c),

c) an organic solvent or solvent mixture,

d) one or more nonionic emulsifiers,

e) optionally one or more ionic emulsifiers, and

f) optionally one or more thickeners or thixotropic agents

whereby said preparation either does not contain any water or contains up to 30 percent by weight of water in dissolved form.

2. A preparation as claimed in claim 1, which comprises

a) from 0.1 to 50% by weight of one or more sulfonylureas,

b) from 0.1 to 60% by weight of one or more active compounds which are partially or completely dissolved in component c),

c) from 5 to 95% by weight of an organic solvent or solvent mixture,

d) from 0.5 to 40% by weight of one or more nonionic emulsifiers,

e) from 0 to 20% by weight of one or more ionic emulsifiers,

f) from 0 to 10% by weight of one or more thickeners or thixotropic agents,

and no water or up to 20 percent by weight of water in dissolved form, where the amount of components a) and b) (total amount of active compound) is in the range from 0.1 to 60% by weight.

3. A preparation as claimed in claim 1, which comprises, as component b), from 0.5 to 50% by weight of one or more substituted phenoxypropionic acid derivatives or from 0.1 to 40% by weight of one or more safeners or from 0.6 to 60% by weight of a mixture of from 0.5 to 50% by weight of phenoxypropionic acid derivative and from 0.1 to 40% by weight of safener.

4. A preparation as claimed in claim 1, which comprises

a) from 0.1 to 20% by weight of one or more sulfonylureas,

b) from 2 to 30% by weight of one or more phenoxypropionic acid derivatives or from 0.1 to 40% by weight of one or more safeners or from 3 to 50% by weight of a mixture of from 2 to 30% by weight of phenoxypropionic acid derivative and from 0.1 to 40% by weight of safener,

c) from 10 to 90% by weight of organic solvent or solvent mixture,

d) from 0.5 to 20% by weight of one or more nonionic emulsifiers,

e) from 0 to 10% by weight of one or more ionic emulsifiers,

f) from 0.1 to 10% by weight of one or more thickeners or thixotropic agents,

and no water or up to 10 percent by weight of water in dissolved form, where the amount of components a) and b) (total amount of active compound) is in the range from 0.6 to 50% by weight.

5. A preparation as claimed in claim 1, which comprises

a) from 0.2 to 5% by weight of one or more sulfonylureas,

b) from 5 to 15% by weight of one or more phenoxypropionic acid derivatives or from 0.1 to 5% by weight of one or more safeners or from 5.1 to 15% by weight of a mixture of from 5 to 10% by weight of phenoxypropionic acid derivative and from 0.1 to 5% by weight of safener,

c) from 40 to 80% by weight of organic solvent or solvent mixture,

d) from 5 to 15% by weight of one or more nonionic emulsifiers,

e) from 0 to 10% by weight of one or more ionic emulsifiers,

f) from 0.2 to 5% by weight of one or more thickeners or thixotropic agents,

and no water or up to 10 percent by weight of water in dissolved form, where the amount of components a) and b) (total amount of active compound) is in the range from 2.5 to 25% by weight.

6. A preparation as claimed of claim 1, which comprises, as component a), one or more sulfonylureas selected from the group consisting of chlorsulfuron, chlorimuron-ethyl, metsulfuron-methyl, triasulfuron, cinosulfuron, prosulfuron, ethametsulfuron-methyl, sulfometuron-methyl, tribenuron-methyl, bensulfuron-methyl, primisulfuron-methyl, iodosulfuron-methyl, triflusulfuron-methyl, oxasulfuron, methyl 2-[3-(4,6-dimethoxypyrimidin-2-yl)ureidosulfonyl]-4-methylsulfonylamidomethylbenzoate, N,N-dimethyl-2-[3-(4,6-dimethoxypyrimidin-2-yl)ureidosulfonyl]-4-formylaminobenzamide, thifensulfuron-methyl, amidosulfuron, ethoxysulfuron and salts thereof, in particular chlorsulfuron, chlorimuron-ethyl, metsulfuron-methyl, triasulfuron, cinosulfuron, prosulfuron, ethametsulfuron-methyl, sulfometuron-methyl, tribenuron-methyl, bensulfuron-methyl, primisulfuron-methyl, iodosulfuron-methyl-sodium, triflusulfuron-methyl, methyl 2-[3-(4,6-dimethoxypyrimidin-2-yl)ureidosulfonyl]-4-methylsulfonylamidomethylbenzoate, N,N-dimethyl-2-[3-(4,6-dimethoxypyrimidin-2-yl)ureidosulfonyl]-4-formylaminobenzamide, thifensulfuron-methyl, amidosulfuron, ethoxysulfuron and salts thereof.

7. A preparation as claimed in claim 1, which comprises, as component b), one or more herbicides selected from the group consisting of diclofop-methyl, cyhalofop-butyl, pirifenop-butyl, haloxyfop-methyl, haloxyfop-P-methyl, clodinafop-propargyl, fluazifop-butyl, fluazifop-P-butyl, quizalofop-methyl or -ethyl or -tefuryl, quizalofop-P-methyl or -ethyl or -tefuryl, propaquizafop, fenoxaprop-ethyl, fenoxaprop-P-ethyl and optionally a safener.

8. A preparation as claimed in claim 1, which comprises, as component c)a nonpolar solvent selected from the group consisting of

aromatic solvents which are derived from benzene,

aliphatic hydrocarbons and

mixtures of aromatic and aliphatic hydrocarbons or

a polar lipophilic solvent selected from the group consisting of

oils,

esters selected from the group of the aliphatic carboxylic esters,

esters of aromatic carboxylic acids,

esters of other organic acids and

mixtures of the solvents mentioned or

mixtures of solvents from 1. and 2.

9. A preparation as claimed in claim 1, which comprises, as component d), an emulsifier or an emulsifier mixture selected from the group consisting of

ethoxylated, saturated and unsaturated aliphatic alcohols,

terminally etherified ethoxylated, saturated and unsaturated aliphatic alcohols,

ethoxylated arylalkylphenols,

ethoxylated alkylphenols having one or more alkyl radicals,

ethoxylated hydroxyfatty acids,

surfactants from the group of the ethoxylated sorbitan esters,

block copolymers of ethylene oxide and propylene oxide,

condensates of EO-PO block copolymers and ethylenediamine and

mixtures of the nonionic surfactants mentioned.

10. A preparation as claimed in claim 1, which comprises, as component f), a thickener or thixotropic agent selected from the group consisting of synthetic mineral products, natural mineral products and organic additives.

11. A process for preparing a composition as claimed in claim 1, which comprises mixing and, if appropriate, grinding the components of the preparation.

12. A method for controlling harmful plants in crops of useful plants, which comprises applying a herbicidal preparation as claimed in claim 1 as crop protection composition.

13. A method as claimed in claim 12, which comprises diluting an effective amount of the herbicidal preparation to the use concentration, giving an aqueous suspension, and applying the aqueous suspension to the harmful plants, parts of plants, plant seeds, to the area on which the plants grow or are to be controlled, or to an area of useful plants under cultivation, which are to be protected against harmful plants.

14. A preparation in the form of a liquid suspension in concentrate which comprises

a) one or more solid herbicidally active compounds from the group of sulfonylureas in suspended form wherein the sulfonylureas are selected from the group consisting of

A1) phenyl- and benzylsulfonylureas or salts thereof,

A2) thienylsulfonylureas or salts thereof, and

A4) sulfonyldiamide-derivatives or salts thereof,

A6) alkoxyphenoxysulfonylureas or salts thereof

b) one or more non-sulfonylurea compounds, which are partly or completely dissolve in component c), said compounds being a compound selected from the group consisting of phenoxypropionic acid derivatives, monocyclic heteraryloxyphenoxyalkanecarboxylic acid derivatives, bicyclic heteroaryloxy-phenoxyalkanecarboxylic acid derivative, and safeners;

c) an organic solvent or an organic solvent mixture, wherein said solvent or solvent mixture is selected from a class of solvents selected from the group consisting of substantially nonpolar solvents and polar lipophilic solvents;

d) one or more nonionic emulsifiers;

e) optionally one or more ionic emulsifiers,

f) optionally one or more thickeners or thixotropic agent

whereby said preparation whereby said preparation either does not contain any water or contains up to 30 percent by weight of water in dissolved form.

15. The preparation according to claim 14 wherein

the one or more non-sulfonylurea compounds is clodinefop-propargly, phenoxaprop-P-ethyl, mefenpyr-diethyl, isoxadifen-ethyl, or cloquintocet-mexyl,

the solvent is a mineral at oil with aromatic fractions or rapeseed oil fatty acid (C₁-C₄)-alkyl esters,

the non-ionic surfactant is an ethoxylated fatty alcohol or ester thereof having a degree of ethoxylation of from 1 to 100 EO or block copolymers of EO and PO,

the ionic surfactant is a partial phosphoric ester or sulforic ester of ethoxylated di- and tristyrylphenols,

the thickener is a magnesium phyllosilicate or a thixotropic agent based upon an organic castor oil derivative.

16. The preparation according to claim 14, wherein the sulfonylurea compound is iodosulfuron or iodosulfuron-methyl sodium.