Use of fatty alcohol polyalkoxy alkyl ethers in agricultural formulations

Abstract

An adjuvant containing: (a) a fatty alcohol polyalkoxy alkyl ether; and (b) a component selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, alkyl esters, phytobland mineral oils, water soluble silicone surfactants, fatty acid dialkyl ethers, fatty acid dialkyl carbonates, vegetable oils, and mixtures thereof.

Description

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable.

BACKGROUND OF THE INVENTION

The present invention generally relates to the use of fatty alcohol polyalkoxy alkyl ethers as emulsifiers, dispersants, wetting agents and solvents for adjuvant concentrates, pesticide compositions, and aqueous pesticide compositions.

Insecticides, insect repellents, fungicides, bactericides, bacteriostats, herbicides, and plant growth regulators are normally formulated into various products for use on crops, for insect control, weed control and the like. Alternatively, the products may be formulated as liquids or powders or granules. Solvents, emulsifiers, dispersing agents and wetting agents are normally incorporated into such compositions to ensure the preparation of a uniform pesticide formulation.

These formulation components are also selected to ensure that the pesticide composition will disperse or emulsify evenly in a tank mix at the point of application. They also have a third purpose which is to ensure optimum delivery of the tank mix preparation to the targeted pest or substrate. Sometimes these surfactants incorporated in pesticide formulations are not sufficient to fully ensure stable tank mixes when such tank mixes contain multiple components. Similarly, it may be necessary to add adjuvants to the tank mix for full stability. It is widely known that adding adjuvants which contain surfactants to the tank mix will realize the desired stabilization. Moreover, additional quantities of surfactants have been shown to potentiate pesticidal activity of many pesticides and there are many adjuvant formulations that have been developed for this purpose. Surfactants are nearly always components of these adjuvants ranging from minor components to the sole component.

BRIEF SUMMARY OF THE INVENTION

The present invention is directed to an adjuvant composition containing:

(a) a fatty alcohol polyalkoxy alkyl ether; and (b) a component selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, alkyl esters, phytobland mineral oils, water soluble silicone surfactants, fatty dialkyl ethers, fatty dialkyl carbonates, vegetable oils, and mixtures thereof.

The present invention is also directed to a pesticide concentrate containing:

(a) an adjuvant containing: (i) a fatty alcohol polyalkoxy alkyl ether; and (ii) a component selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, alkyl esters, phytobland mineral oils, water soluble silicone surfactants, fatty dialkyl ethers, fatty dialkyl carbonates, vegetable oils, and mixtures thereof; and (b) a biologically-active ingredient.

The present invention is also directed to a process for treating a target substrate involving contacting the target substrate with the above-disclosed pesticide concentrate.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

Not Applicable.

DETAILED DESCRIPTION OF THE INVENTION

Other than in the claims and in the operating examples, or where otherwise indicated, all numbers expressing quantities of ingredients or reaction conditions used herein are to be understood as being modified in all instances by the term "about".

The term target substrate as used herein means a plant, a plant pest, or a combination of a plant and a plant pest. A plant pest is defined as any living stage of any weed, insects, mites, nematodes, slugs, snails, protozoa, or other invertebrate animals, bacteria, fungi, other parasitic plants or reproductive parts thereof, viruses, or any organisms similar to or allied with any of the foregoing, or any infectious substances which can directly or indirectly injure or cause disease or damage in any plants or parts thereof, or any processed, manufactured, or other products of plants.

The fatty alcohol polyalkoxy alkyl ethers of the present invention can provide a variety of functions in agricultural applications. They can serve as emulsifiers, dispersants and wetting agents in a variety of pesticide and adjuvant compositions. Specifically, they may be used in emulsifiable concentrates, microemulsions, aqueous flowable and oil-based flowables. They can also be used as emulsifiers in crop oil concentrate adjuvants based on both synthetic and vegetable oils. Fatty alcohol polyalkoxy alkyl ethers are low foaming surfactants which have excellent stability in the presence of caustics and acids. They are also readily biodegradable and their activity is not affected by hard water, which is often employed in agricultural tank mixes.

The fatty alcohol polyalkoxy alkyl ethers of the present invention correspond to formula I:

R.sub.1 O--(EO).sub.x (PO).sub.y --R.sub.2 (I) wherein R.sub.1 is a monovalent organic radical having from 6 to 22, and preferably from 12 to 18 carbon atoms, x is a number from 1 to 10, and preferably from 2 to 6, y is a number from 0 to 10, and R.sub.2 is an alkyl group having from 1 to 12, and preferably from 3 to 6 carbon atoms. A particularly preferred fatty alcohol polyalkoxy alkyl ether for use in the present invention is one wherein R.sub.1 is a C.sub.12-18 organic radical, x is equal to 5, y is zero, and R.sub.2 is an n-butyl group.

Examples of suitable co-surfactants/solvents include, for example, other nonionic surfactants such as ethoxylated castor oils, alcohol ethoxylates, alkyl polyglycosides, glucamides and the like, anionic surfactants such as fatty alcohol ether sulfates, phosphate esters, sulfonates, and the like, cationic surfactants such as ethoxylated fatty amines, and the like, alkyl esters such as methyl oleate, ethyl canolate, and methyl soyate, phytobland mineral oils, water-soluble silicone surfactants, fatty dialkyl ethers, fatty dialkyl carbonates, vegetable oils such as canola oil, soybean oil and the like, and mixtures thereof, typically employed in adjuvant and pesticide compositions.

The co-surfactant/solvent of the present invention will typically be present in the adjuvant composition in an amount of from about 1 to about 99% by weight, preferably from about 10 to about 95% by weight, and most preferably from about 25 to about 90% by weight, based on the weight of the adjuvant composition.

According to another embodiment of the present invention, there is provided a pesticide concentrate containing a mixture of the above-disclosed adjuvant composition and a biologically active ingredient.

Suitable biologically-active ingredients for use in the pesticide concentrates of the present invention are generally selected from the group consisting of insecticides, insect repellents, fungicides, bactericides, bacteriostats, herbicides, and plant growth regulators, all of which are based on biologically-active ingredients. Suitable insecticides include, for example,

O,O-diethyl O-(2-isopropyl-4-methyl-6-pyrimidinyl)phosphorothioate, O,O-diethyl S-2-[(ethylthio)ethyl]phosphorodithioate, O,O-dimethyl O-(3-methyl-4-nitrophenyl)thiophosphate, O,O-dimethyl S-(N-methylcarbamoylmethyl)phosphorodithioate, O,O-dimethyl S-(N-methyl-N-formylcarbamoylmethyl)phosphorodithioate, O,O-dimethyl S-2-[(ethylthio)ethyl]phosphorodithioate, O,O-diethyl S-2-[(ethylthio)ethyl]phosphorodithioate, O,O-dimethyl-1-hydroxy-2,2,2-trichloroethylphosphonate, O,O-diethyl-O-(5-phenyl-3-isooxazolyl)phosphorothioate, O,O-dimethyl O-(2,5-dichloro-4-bromophenyl)phosphorothioate, O,O-dimethyl-O)3-methyl-4-methylmercaptophenyl)thiophosphate, O-ethyl O-p-cyanophenyl-O-phenylphosphorothioate, O,O-dimethyl-S-(1,2-dicarboethoxyethyl)phosphorodithioate, 2-chloro-(2,4,5-trichlorophenyl)vinyldimethyl phosphate, 2-chloro-1-(2,4-dichlorophenyl)vinyldimethyl phosphate, O,O-dimethyl O-p-cyanophenyl phosphorothioate, 2,2-dichlorovinyl dimethyl phosphate, O,O-diethyl O-2,4-dichlorophenyl phosphorothioate, ethyl mercaptophenylacetate O,O-dimethyl phosphorodithioate, S-[(6-chloro-2-oxo-3-benzooxazolinyl)methyl]O,O-diethyl phosphorodithioate, 2-chloro-1-(2,4-dichlorophenyl)vinyl diethylphosphate O,O-diethyl O-(3-oxo-2-phenyl-2H-pyridazine-6-yl)phosphorothioate, O,O-dimethyl S-(1-methyl-2-ethylsulfinyl)-ethyl phosphorothioate, O,O-dimethyl S-phthalimidomethyl phosphorodithioate, O,O-diethyl 2,2,2-trichloroethanol, 2-(p-tert-butyl-phenoxy)isopropyl-2'-chloroethylsulfite, azoxybenzene, di-(p-chlorophenyl)-cyclopropyl carbinol, di[tri(2,2-dimethyl-2-phenylethyl)tin]oxide, 1-(4-chlorophenyl)-3-(2,6-difluorobenzoyl)urea and S-tricyclohexyltin O,O-diisopropylphosphorodithioate; 2-methyl-2-(methylthio)propionaldehyde O-(methylcarbamoyl)oxime; ethyl [2-(4-phenoxyphenoxy)ethyl]carbamate; butyl-2,3-dihydro-2,2-dimethylbenzofuran-7-yl N,N'-dimethyl-N,N'-thiodicarbamate; 1-naphthyl methyl carbamate; 2-(ethylthiomethyl)phenyl methylcarbamate; 5-(4-phenoxybutyl)dimethylthiocarbamate; dimethyl N,N'-(thiobis(methylimino)carbonyloxy)-bis(ethanimidothioate); (RS)-.alpha.-cyano-3-phenoxybenzyl-(RS)-2-(4-chlorophenyl)-3-methylbutyrate; (RS)-.alpha.-cyano-3-phenoxyphenyl-(RS)-2,2-dichloro-1-(4-ethoxyphenyl)cyclopropanecarboxylate; (RS)-.alpha.-cyano-3-phenoxybenzyl-N-(2-chloro-.alpha.,.alpha.,.alpha.-trifluoro-p-tolyl-D-valinate; 3-phenoxybenzyl-(1RS)-cis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanedicarboxylate.

Insect repellents which may be employed include but are not limited to 2-ethyl-1,3-hexanediol; N-octyl bicycloheptene dicarboximide; N,N-diethyl-M-toluamide; 2,3:4,5-Bis (2-butylene) tetrahydro-2-furaldehyde; Di-n-propyl isocinchomeronate; and 2-hydroxyethyl-n-octyl sulfide.

Fungicides which may be employed include but are not limited to 3,3'-ethylenebis (tetrahydro-4,6-dimethyl-2H-1,3,5-thiadiazine-2-thione), zinc or manganese ethylenebis(dithiocarbamate), bis-(dimethyldithiocarbamoyl)disulfide, zinc propylenebis (dithiocarbamate), bis(dimethyldithiocarbamoyl) ethylenediamine; nickel dimethyldithiocarbamate, methyl-1(butylcarbamoyl)-2-benzimidazolecarbamate, 1,2-bis(3-methoxycarbonyl-2-thioureido)benzene, 1-isopropylcarbamoyl-3-(3,5-dichlorophenyl)hydantoin, potassium N-hydroxymethyl-N-methyldithiocarbamate and 5-methyl-10-butoxycarbonylamino-10, 11-dehydrodibenzo (b,f)azepine; pyridine fungicides such as zinc bis(1-hydroxy-2(1H)pyridinethionate and 2-pyridinethiol-1-oxide sodium salt; O,O-diisopropyl S-benzylphosphorothioate and O-ethyl S,S-diphenyldithiophosphate; phthalimide fungicides such as N-(2,6-p-diethylphenyl)phthalimide and N-(2,6-diethylphenyl)-4-methylphthalimide; dicarboxyimide fungicides such as N-trichloromethylthio 4-cyclohexene-1,2-dicarboxyimide and N-tetrachloroethylthio-4-cyclohexene-1,2-dicarboxyimide; 5,6-dihydro-2-methyl-1,4-oxathine-3-carboxanilido-4,4-dioxide and 5,6-dihydro-2-methyl-1, 4-oxathine-3-carboxanilide; naphthoquinone fungicides such as 2,3-dichloro-1,4-naphthoquinone, 2-oxy-3-chloro-1,4-naphthoquinone copper sulfate, pentachloronitrobenzene; 1,4-dichloro-2,5-dimethoxybenzene; 5-methyl-s-triazol-(3,4-b)benzthiazole; 2-(thiocyanomethylthio)benzothiazole; 3-hydroxy-5-methylisooxazole; N-2,3-dichlorophenyltetrachlorophthalamic acid; 5-ethoxy-3-trichloromethyl-1,2,4-thiaziazole; 2,4-dichloro-6-(0-chloroanilino)-1,3,5-triazine; 2,3-dicyano-1,4-dithioanthraquinone; copper 8-quinolinate; polyoxine; validamycin; cycloheximide; iron methanearsonate; diisopropyl 1,3-dithiolane-2-iridene malonate; 3-allyloxy-1,2-benzoisothiazol-1,1-dioxide; kasugamycin; Blasticidin S; 4,5,6,7-tetrachlorophthalide; 3-(3,5-dichlorophenyl)5-ethenyl 5-methyloxazolizine-2,4-dione; N-(3,5-dichlorophenyl)-1,2-dimethylcyclopropane-1,2-dicarboxyimide; S-n-butyl-5'-para-t-butylbenzyl-N-3-pyridyldithiocarbonylimidate; 4-chlorophenoxy-3,3-dimethyl-1-(1H, 1,3,4-triazol-1-yl)-2-butanone; methyl-D,L-N-(2,6-dimethylphenyl)-N-(2'-methoxyacetyl)alaninate; N-propyl-N-[2-(2,4,6-trichlorophenoxy)ethyl]imidazol-1-carboxamide; N-(3,5-dichlorophenyl)succinamide; tetrachloroisophthalonitrile; 2-dimethylamino-4-methyl-5-n-butyl-6-hydroxypyrimidine; 2,6-dichloro-4-nitroaniline; 3-methyl-4-chlorobenzthiazol-2-one; 1,2,5,6-tetrahydro-4H-pyrrolol-[3,2,1-i,j]quinoline-2-one; 3'-isopropoxy-2-methylbenzanilide; 1-[2-(2,4-dichlorophenyl)-4-ethyl-1,3-dioxorane-2-ylmethyl]-1H,1,2,4-triazol; 1,2-benzisothiazoline-3-one; basic copper chloride; basic copper sulfate; N'-dichlorofluoromethylthio-N,N-dimethyl-N-phenyl sulfamide; ethyl-N-(3-dimethylaminopropyl)thiocarbamate hydrochloride; piomycin; S,S6-methylquinoxaline-2,3-di-yldithiocarbonate; complex of zinc and manneb; di-zinc bis(dimethyldithiocarbamate)ethylenebis (dithiocarbamate).

Plant growth regulators which may be employed include but are not limited to N-methoxycaronyl-N'-4-methylphenylcarbamoylethylisourea and 1-(4-chlorophenylcarbamoyl)-3-ethoxycarbonyl-2-methylisourea; another type of plant growth regulators such as sodium naphthaleneacetate, 1,2-dihydropyridazine-3,6-dione and gibberellins; triazine herbicides such as 2-methylthio-4,6-bisethylamino-1,3,5-triazine, 2-chloro-4,6-bisethylamino-1,3,5-triazine, 2-methoxy-4-ethylamino-6-isopropylamino-1,3,5-triazine, 2-chloro-4-ethylamino-6-isopropylamino-s-triazine, 2-methylthio-4,6-bis(isopropylamino)-S-triazine and 2-methylthio-4-ethylamino-6-isopropylamino-s-triazine; phenoxy herbicides such as 2,4-dichlorophenoxyacetic acid and methyl, ethyl, and butyl esters thereof

2-chloro4-methylphenoxyacetic acid, 4-chloro-2-methylphenoxyacetic acid and ethyl 2-methyl-4-chlorophenoxybutylate; diphenylether herbicides such as 2,4,6-trichlorophenyl-4'-nitrophenylether,2,4-dichlorophenyl-4'-nitrophenylether and 3,5-dimethylphenyl-4'-nitrophenylether; urea herbicides such as 3-(3,4-dichlorophenyl)-1-methoxy-1-methyl urea, 3-(3,4-dichlorophenyl)-1,1-dimethylurea and 3-(4-chlorophenyl)-1,1-dimethyl urea; carbamate herbicides such as 3-methoxycarbonylaminophenyl-N-(3-methylphenyl)carbamate, isopropyl-N-(3-chlorophenyl)carbamate and methyl-N-(3,4'-dichlorophenyl)carbamate; uracil herbicides such as 5-bromo-3-sec-butyl-6-methyluracil and 1-cyclohexyl-3,5-propyleneuracil; thiolcarbamate herbicides such as S-(4-chlorobenzyl)-N,N-diethylthiolcarbamate,S-ethyl-N-cyclohexyl-N-ethylthiolcarbamate and S-ethyl-hexahydro-1H-azepine-1-carbothioate and S-ethyl-N,N-di-n-propyl-thiocarbamate; pyridinium herbicides such as 1,1'-di-methyl-4,4'-bispyridinium dichloride; phosphoric herbicides such as N-(phosphonomethyl)glycine; aniline herbicides such as alpha-trifluoro-2,6-dinitro-N,N-dipropyl-p-toluidine, 4-(methylsulfonyl)-2,6-dinitro-N,N-dipropylaniline and N[3], N[3]-diethyl-2,4-dinitro-6-trifluoromethyl-1,3-phenylene diamine; acid anilide herbicides such as 2-chloro-2',6'-diethyl-N-(butoxymethyl)acetoanilide, 2-chloro-2',6'-diethyl-N-(methoxymethyl)acetoanilide, and 3,4-dichloropropioneanilide; pyrazole herbicides such as 1,3-dimethyl-4-(2,4-dichlorobenzoyl)-5-hydroxypyrazole and 1,3-di-methyl-4-(2,4-dichlorobenzoyl)-5-(p-toluenesulfonyloxy)pyrazole; 5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazoline-2-one; 2-[N-isopropyl,N-(4-chlorophenyl)carbamoyl]-4-chloro-5-methyl-4-isooxazoline-3-one; 3-isopropylbenzo-2-thia-1,3-diazinone-(4)-2,4-dioxide and 3-(2-methyl-phenoxy)pyridazine.

According to another embodiment of the present invention, there is thus provided a pesticide concentrate containing: (a) from about 99.9 to about 5% by weight, preferably from about 95 to about 15% by weight, and most preferably from about 90 to about 20% by weight, of the above-disclosed adjuvant; and (b) from about 0.1 to about 95% by weight, preferably from about 5 to about 85% by weight, and most preferably from about 10 to about 80% by weight, of a biologically active ingredient.

The precise amount of biologically active ingredient contained in the pesticide concentrate will oftentimes depend upon the specific end-use application, i.e., the target substrate to be treated, the area to be treated, etc. Thus, it is within the skill of the applicator to determine the specific amount of biologically active ingredient to be used for a particular application.

In order to formulate the pesticide concentrate into a ready-to-use form, it is typically diluted with water to form an aqueous pesticide composition. The ready-to-use aqueous pesticide composition will typically contain from about 0.1% to about 10% by weight, and preferably from about 0.5 to about 5% by weight, based on the weight of the composition, of the above-disclosed pesticide concentrate, the remainder of which will typically be water.

The precise amount of dilution of the pesticide concentrate necessary to form a ready-to-use aqueous pesticide composition will again depend upon the specific application itself, i.e., the target substrate to be treated, the area to be treated, etc. Thus, it is once again within the skill of the applicator to determine the specific amount of water needed to dilute the pesticide concentrate.

Finally, the present invention also provides for a process for treating a target substrate involving contacting the target substrate with the above-disclosed aqueous pesticide composition.

Claims

1. A pesticide concentrate comprising:

(a) from about 90 to about 20% by weight, based on the weight of the

(i) a fatty alcohol polyalkoxy alkyl ether; and

(ii) from about 25 to about 90% by weight based on the weight of the adjuvant, of a co-surfactant/solvent component selected from the group consisting of nonionic surfactants, anionic surfactants, cationic surfactants, alkyl esters, phytobland mineral oils, water soluble silicone surfactants, fatty acid dialkyl ethers, fatty acid dialkyl carbonates, vegetable oils, and mixtures thereof; and

(b) a biologically active ingredient.

2. The concentrate of claim 1 wherein the fatty alcohol polyalkoxy alkyl ether corresponds to formula I:

R.sub.1 O--(EO).sub.x (PO).sub.y --R.sub.2 (I)

wherein R.sub.1 is a monovalent organic radical having from 6 to 22, x is a number from 1 to 10, y is a number from 0 to 10, and R.sub.2 is an alkyl group having from 1 to 12 carbon atoms.

3. The concentrate of claim 2 wherein in formula I R.sub.1 is a C.sub.12-18 organic radical, x is equal to 5, y is zero, and R.sub.2 is an n-butyl group.

4. The concentrate of claim 1 wherein the biologically active ingredient is present in the concentrate in an amount of from about 0.1 to about 95% by weight, based on the weight of the concentrate.

5. The concentrate of claim 1 wherein the biologically active ingredient is present in the concentrate in an amount of from about 10 to about 80% by weight, based on the weight of the concentrate.

6. A process for treating a target substrate comprising contacting the substrate with an effective amount of the pesticide concentrate of claim 1.