Solid pesticidal formulation

Details Solid pesticidal formulation Solid pesticidal formulation

2001-03-28

2003-07-22

Levy, Neil S. (Department: 1616)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Biocides; animal or insect repellents or attractants

C424S405000, C424S408000, C424S417000, C424S421000

Reexamination Certificate

active

06596292

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a solid pesticidal formulation.
BACKGROUND ART
Pesticides are usually used in various type formulations for applying the active ingredient easily and effectively. Formulations applied as an aqueous dilution include liquid formulations such as emulsifiable concentrate, aqueous solution, suspension concentrate and emulsion in water, and solid formulations such as wettable powder, water soluble powder and water dispersible granule. Among them, solid formulations are preferable because they are packed in the paper bag or film which can be folded after use and which is a convenient container.
However, solid formulations may cause a trouble of coagulation of the formulation or reducing of fluidity when they are placed in the air in open package in the case of application or when they are placed in the air while the prepared formulation is divided and packed, because of their hygroscopic character originated from the used materials, for examples, the hygroscopic character of active ingredient, carrier, surfactant and so on. Further, the solid formulations for aqueous spray application, for examples, wettable powder, water dispersible granule and so on, may reduce dispersibility when they are diluted with water, even if coaguration or reducing of fluidity is not observed. The reduced dispersibility when diluted with water may cause uneven application from heterogeneous dilution or clogging of spray nozzle from aggregation in the dilution or precipitation of insoluble materials. As a result, when applying pesticides, desired efficacy may not be observed or undesired phytotoxicity may be caused to give a severe problem. Furthermore, granular formulations may also reduce the hardness of the particles or deteriorate disintegration in water. Especially, the formulations containing water soluble carrier or water soluble active ingredient often cause these troubles.
SUMMARY OF THE INVENTION
The present invention provides a solid formulation having excellent preservative stability, and it comprises a specific amount of pesticidal active ingredient, dispersant, wetting agent, water-soluble carrier, smectite and boron compound selected from the group of boron oxide, boric acid and borate.
Namely, the present invention provides a solid pesticidal composition which comprises (a) 0.1 to 75% by weight of a pesticidal active ingredient, (b) 0.3 to 40% by weight of a dispersant, (c) 0.3 to 20% by weight of a wetting agent, (d) 0.1 to 30% by weight of a boron compound selected from the group of boron oxide, boric acid and borate, (e) 0.1 to 95% by weight of a water-soluble carrier and (f) 0.1 to 30% by weight of smectite.
DETAILED DESCRIPTION OF THE INVENTION
The pesticidal active ingredient used for controlling harmful pests or regulating plant growth in the present invention is not limited and may be water soluble or water insoluble. Its melting point is also not limited. Examples are as follows, and the active ingredient may be one isomer or a mixture of two or more isomers including geometrical isomers, optical isomers and so on.
Organophosphosphorus compounds such as O,O-dimethyl O-(3-methyl-4-nitrophenyl)phosphorothioate, O,O-dimethyl O-[3-methyl-4-(methylthio)phenyl]phosphorothioate, O,O-diethyl O-(2-isopropyl-6-methylpyrimidin-4-yl)phosphorothioate, O,O-diethyl O-3,5,6-trichloro-2-pyridyl phosphorothioate, O,S-dimethyl acetylphosphoramidothioate S-2,3-dihydro-5-methoxy-2-oxo-1,3,4-thiadiazol-3-ylmethyl O,O-dimethyl phosphorodithioate, O,O-diethyl S-2-ethylthioethyl phosphorodithioate, 2,2-dichlorovinyl dimethylphosphate, O-ethyl O-4-(methylthio)phenyl S-propyl phosphorodithioate, O-4-cyanophenyl O,O-dimethyl phosphorothioate, 2-methoxy-4H-1,3,2-benzodioxaphosphorin-2-sulfide, O,O-dimethyl S-(N-methylcarbamoylmethyl)dithiophosphate, ethyl 2-dimethoxyphosphinothioylthio(phenyl)acetate, diethyl (dimethoxyphosphinothioylthio)succinate, dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate, S-3,4-dihydro-4-oxo-1,2,3-benzotriazin-3-ylmethyl O,O-dimethyl phosphorodithioate, dimethyl [(E)-1-methyl-2-(methylcarbamoyl)vinyl]phosphate, O,O,O′,O′-tetraethyl-S,S′-methylenebis(phosphorodithioate), O-2,6-dichloro-4-methylphenyl O,O-dimethyl phosphorothioate and so on;
Carbamate compounds such as 2-sec-butylphenyl methylcarbamate, ethyl N-[2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl(methyl)aminothio]-N-isopropyl-&bgr;-alaninate, 2-isopropoxyphenyl N-methylcarbamate, 2,3-dihydro-2,2-dimethyl-7-benzo[b]furanyl N-dibutylaminothio-N-methylcarbamate, 1-naphthyl N-methylcarbamate, S-methyl N-(methylcarbamoyloxy)thioacetimidate, 2-(ethylthiomethyl)phenyl methylcarbamate, 2-methyl-2-(methylthio)propionaldehyde O-methylcarbamoyloxime, N,N-dimethyl-2-methylcarbamoyloxyimino-2-(methylthio)acetamide, S-4-phenoxybutyl N,N-dimethylthiocarbamate and so on;
Pyrethroid compounds such as 2-(4-ethoxyphenyl)-2-methyl-1-(3-phenoxybenzyl)oxypropane, (RS)-&agr;-cyano-3-phenoxybenzyl (RS)-2-(4-chlorophenyl)-3-methylbutyrate, (S)-&agr;-cyano-3-phenoxybenzyl (S)-2-(4-chlorophenyl)-3-methylbutyrate, (RS)-&agr;-cyano-3-phenoxybenzyl 2,2,3,3-tetramethylcyclopropanecarboxylate, (RS)-&agr;-cyano-3-phenoxybenzyl (1RS)-cis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 3-phenoxybenzyl (1RS)-cis,trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, (RS)-&agr;-cyano-3-phenoxybenzyl (1RS,3Z)-cis-3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate, (S)-&agr;-cyano-3-phenoxybenzyl (1R)-cis-3-(2,2-dibromovinyl)-2,2-dimethylcyclopropanecarboxylate, (RS)-&agr;-cyano-3-phenoxybenzyl (RS)-2,2-dichloro-1-(4-ethoxyphenyl)cyclopropanecarboxylate, &agr;-cyano-3-phenoxybenzyl N-(2-chloro-&agr;,&agr;,&agr;-trifluoro-p-tolyl)-D-valinate, 2-methyl-3-phenylbenzyl (1RS,3Z)-cis-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2-(4-bromodifluoromethoxyphenyl)-2-methyl-1-(3-phenoxybenzyl)methylpropane, (S)-&agr;-cyano-3-phenoxybenzyl (1R)-cis-3-(1,2,2,2-tetrabromoethyl)-2,2-dimethylcyclopropanecarboxylate, (4-ethoxyphenyl)-[3-(4-fluoro-3-phenoxyphenyl)propyl]dimethylsilane, 3-phenoxybenzyl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, (RS)-&agr;-cyano-3-phenoxybenzyl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, 5-benzyl-3-furylmethyl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, (S)-&agr;-cyano-3-phenoxybenzyl (1R,3Z)-cis-(2,2-dimethyl-3-[3-oxo-3-(1,1,1,3,3,3-hexafluoropropyloxy)propenyl]cyclopropanecarboxylate, (RS)-&agr;-cyano-4-fluoro-3-phenoxybenzyl 3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluoro-4-methylbenzyl (1RS,3Z)-cis-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethylcyclopropanecarboxylate, 2,3,5,6-tetrafluorobenzyl (1R)-trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropanecarboxylate, 3,4,5,6-tetrahydrophthalimidomethyl (1RS)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, (RS)-2-methyl-4-oxo-3-(2-propenyl)-2-cyclopenten-1-yl (1RS)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, (S)-2-methyl-4-oxo-3-(2-propynyl)-2-cyclopenten-1-yl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, (RS)-1-ethynyl-2-methyl-2-pentenyl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, 2,5-dioxo-3-(2-propynyl)imidazolidin-1-ylmethyl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, 5-(2-propynyl)furfuryl (1R)-cis,trans-2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate, 5-(2-propynyl)furfuryl 2,2,3,3-tetramethylcyclopropanecarboxylate and so on;
Amino acid compounds such as N-(phosphonomethyl)glycine, agriculturally acceptable salt thereof, 4-hydroxymethylphosphinoyl-L-homoalanyl-L-alanine and so on;
Thiadiazine derivatives such as 3-isopropyl-1H-2,1,3-benzothiadiazin-4(3H)-on 2,2-dioxide, 2-tert-butylimino-3-isopropyl-5-phenyl-1,3,5-thiadiazin-4-one and so on;
Nitroimidazolidine derivatives;
Nereistoxin der

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