JPH0967208A - Production of agrochemical composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a granular agrochemical composition having excellent residual activity by applying a specific inexpensive easy treatment to a microcapsule produced by using easily available natural yeast as the microcapsule shell. SOLUTION: This agrochemical composition is produced by including an agrochemical active component consisting of a noxious life controlling active component or a plant growth regulating active component in a microcapsule, suspending the microcapsule together with a polyvinyl alcohol in water, adding a carrier to the suspension and granulating the mixture by extrusion. The agrochemical active component is e.g. insecticide, miticide, fungicide, herbicide, plant growth regulator, insect pheromone or insect growth regulator. The yeast is e.g. Saccharomyces cerevisiae. The amount of the polyvinyl alcohol is about 0.1-10wt.% based on the total composition. The carrier is e.g. kaolinite, white carbon or dextrin and the solvent is e.g. decane or 1-undecene. The particle diameter of the composition is preferably about 0.1-30mm.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for producing an agricultural chemical composition.

[0002]

2. Description of the Related Art Conventionally, in JP-A-5-124908 and the like, a composition in which a pesticide active ingredient is encapsulated in a yeast,
That is, a microencapsulated pesticide composition using yeast as a microcapsule film is known.

[0003]

However, none of these microencapsulated pesticide compositions have been put into practical use so far because they generally have poor residual effects.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to improve the residual effect of a microencapsulated pesticide composition using a naturally occurring and easily available raw material yeast as a microcapsule film. It is a thing. That is, the present invention, an aqueous suspension obtained by suspending microcapsules and polyvinyl alcohol in which the pesticidal active ingredient which is a pest control active ingredient or a plant growth regulating active ingredient in yeast cells and polyvinyl alcohol are suspended in water. The present invention provides a method for producing a granular pesticide composition which is added to a carrier and extruded and granulated. The composition obtained by this inexpensive and simple production method can be used for various applications because of its excellent residual effect. It is a thing.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Examples of the agrochemical active ingredient used in the present invention include insecticides, acaricides, fungicides, herbicides, plant growth regulators, insect pheromones, insect growth regulators and the like described below. When the pesticidal active ingredient is liquid at room temperature, the pesticidal active ingredient can be used as it is, or can be used by dissolving it in a solvent. When the pesticidal active ingredient is semi-solid or solid at room temperature, it is preferable to dissolve the pesticidal active ingredient in a suitable solvent before use. Specific examples of the agrochemical active ingredient used in the present invention are shown below together with the compound numbers.

(1) α-Cyano-3-phenoxybenzyl 2- (4-chlorophenyl) -3-methylbutyrate (2) (S) -α-cyano-3-phenoxybenzyl (S) -α-2- (4-chlorophenyl) -3-methylbutyrate (3) α-cyano-3-phenoxybenzyl 2,
2,3,3-Tetramethylcyclopropanecarboxylate (4) 3-phenoxybenzyl 3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (5) 3-phenoxybenzyl chrysanthemate ( 6) 3-phenoxybenzyl (1R) -chrysanthemate (7) α-cyano-3-phenoxybenzyl 3-
(2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (8) α-cyano-3- (4-chlorophenoxy) benzyl 3- (2,2-dichlorovinyl) -2,2-dimethyl Cyclopropanecarboxylate (9) α-cyano-3- (4-fluorophenoxy)
Benzyl 3- (2,2-dichlorovinyl) -2,2-
Dimethylcyclopropanecarboxylate (10) α-cyano-3-phenoxybenzyl chrysanthemate

(11) α-cyano-3-phenoxybenzyl (1R) -chrysanthemate (12) α-cyano-3- (4-chlorophenoxy)
Benzyl 2- (4-chlorophenyl) -3-methylbutyrate (13) α-cyano-3-phenoxybenzyl 2-
(4-tert-Butylphenyl) -3-methylbutyrate (14) α-cyano-3-phenoxybenzyl 2-
(3,4-Methylenedioxyphenyl) -3-methylbutyrate (15) α-cyano-4-fluoro-3-phenoxybenzyl 3- (2,2-dichlorovinyl) -2,2-
Dimethylcyclopropanecarboxylate (16) α-cyano-3-phenoxybenzyl 2-
(2-chloro-4-trifluoromethylanilino) -3
-Methyl butyrate (17) α-cyano-3-phenoxybenzyl 2-
(4-Difluoromethoxyphenyl) -3-methylbutyrate (18) α-cyano-3-phenoxybenzyl
(S) -2- (4-difluoromethoxyphenyl) -3
-Methylbutyrate (19) Cyano- (5-phenoxy-2-pyridyl)
Methyl 3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (20) α-cyano-3-phenoxybenzyl 2,
2-Dimethyl-3- (1,2,2,2-tetrabromoethyl) cyclopropanecarboxylate

(21) α-Cyano-3-phenoxybenzyl 1- (4-ethoxyphenyl) -2,2-dichlorocyclopropanecarboxylate (22) α-Cyano-3-phenoxybenzyl 2,
2-Dimethyl-3- (2-chloro-2-trifluoromethylvinyl) cyclopropanecarboxylate (23) 2- (4-ethoxyphenyl) -2-methylpropyl 3-phenoxybenzyl ether (24) 2- (4 -Ethoxyphenyl) -3,3,3
-Trifluoropropyl 3-phenoxybenzyl ether (25) 2-methyl-3-phenylbenzyl (1
R, trans) -2,2-Dimethyl-3- (2-chloro-2-trifluoromethylvinyl) cyclopropanecarboxylate (26) 2,3,5,6-tetrafluorobenzyl
(1R, trans) -3- (2,2-dichlorovinyl)
-2,2-Dimethylcyclopropanecarboxylate (27) 2,3,5,6-tetrafluoro-4-methylbenzyl 3- (2,2-dichlorovinyl) -2,2
-Dimethylcyclopropanecarboxylate (28) 3,4,5,6-tetrahydrophthalimidomethyl chrysanthemate (29) 3,4,5,6-tetrahydrophthalimidomethyl (1R) -chrysanthemate (30) 3-allyl -2-Methyl-4-oxocyclopent-2-enyl chrysanthemate

(31) 3-allyl-2-methyl-4-
Oxocyclopent-2-enyl (1R) -chrysanthemate (32) (S) -2-methyl-4-oxo-3- (2
-Propynyl) cyclopent-2-enyl (1R)
-Chrysanthemate (33) 1-ethynyl-2-methyl-2-pentenyl (1R) -Chrysanthemate (34) 5-benzyl-3-furylmethyl Chrysanthemate (35) 5-benzyl-3-furylmethyl (1R)
-Chrysanthemate (36) O, O-dimethyl O- (3-methyl-4-)
Nitrophenyl) phosphorothioate (37) O, O-dimethyl O- (4-cyanophenyl) phosphorothioate (38) O, O-dimethyl S- (α-ethoxycarbonylbenzyl) phosphorodithioate (39) O, O-dimethyl O- (2-isopropyl-4-methyl-6-pyrimidinyl) phosphorothioate (40) O, O-dimethyl O- [3-methyl-4-
(Methylthio) phenyl] phosphorothioate

(41) O- (4-bromo-2,5-dichlorophenyl) O, O-diethylphosphorothioate (42) 2-methoxy-4H-1,3,2-benzodioxaphosphorine-2-sulfide ( 43) O, O-dimethyl O- (2,4,5-trichlorophenyl) phosphorothioate (44) O, O-dimethyl O- (3,5,6-trichloro-2-pyridyl) phosphorothioate (45) O, O -Dimethyl O- (4-bromo-2,
5-Dichlorophenyl) phosphorothioate (46) O- (2,4-dichlorophenyl) O-ethyl S-propyl phosphorodithioate (47) S-2,3-dihydro-5-methoxy-2-
Oxo-1,3,4-thiadiazol-3-ylmethyl O, O-dimethyl phosphorodithioate (48) dimethyl 2,2,2-trichloro-1-hydroxyethylphosphonate (49) O-ethyl O- (4- Nitrophenyl)
Phenylphosphonothioate (50) O, O-dimethyl S-methylcarbamoylmethyl phosphorothioate

(51) O, O-dimethyl S-methylcarbamoylmethyl phosphorodithioate (52) O-2-diethylamino-6-methylpyrimidin-4-yl O, O-dimethyl phosphorothioate (53) O, O- Diethyl O- (5-phenyl-3
-Isoxazole) phosphorothioate (54) O, O-diethyl O- (3-oxo-2-
Phenyl-2H-pyridazin-6-yl) phosphorothioate (55) S-2-ethylsulfinylethyl O, O
-Dimethyl phosphorothioate (56) O, O-dimethyl S- [2- (1-methylcarbamoylethylthio) ethyl] phosphorothioate (57) S- (2-ethylthioethyl) O, O-dimethyl phosphorodithioate (58) ) S- (2-isopropylthioethyl) O,
O-dimethyl phosphorodithioate (59) 3-diethoxyphosphorylthiomethyl-6-
Chlorobenzoxazolone (60) O, O-dimethyl S-phthalimidomethyl phosphorodithioate

(61) (E) -2-Dimethylcarbamoyl-1-methylvinyl dimethyl phosphate (62) 1,2-dibromo-2,2-dichloroethyl dimethyl phosphate (63) 2-chloro-1- (2,2) 4,5-Trichlorophenyl) vinyl dimethyl phosphate (64) 2-chloro-1- (2,4-dichlorophenyl) vinyl dimethyl phosphate (65) 2-chloro-1- (2,4-dichlorophenyl) vinyl diethyl phosphate (66) ) O, O-dipropyl O- [4- (methylthio) phenyl] phosphate (67) O- (2,4-dichlorophenyl) O-ethyl phenylphosphonothioate (68) O, O-dimethyl S- (N-methyl) -N-
Formylcarbamoylmethyl) phosphorodithioate (69) O- (2,6-dichloro-4-methylphenyl) O, O-dimethylphosphorothioate (70) 2-sec-butylphenyl methylcarbamate

(71) 2- (1-methylethyl) phenyl methylcarbamate (72) 3,4-dimethylphenyl methylcarbamate (73) 2,3-dihydro-2,2-dimethylbenzofuran-7-yl (dibutylamino) Thio) methyl carbamate (74) Isopropyl 3-chlorophenyl carbamate (75) S-Ethyl N, N-dipropyl thiol carbamate (76) 3-[(methoxycarbonyl) amino] phenyl (3-methylphenyl) carbamate (77) S- Ethyl N, N-hexamethylene thiol carbamate (78) S- (4-chlorobenzyl) N, N-diethyl thiol carbamate (79) Methyl 1- (butylcarbamoyl) benzimidazole-2-carbamate (80) Ethyl 2- ( Four Phenoxy-phenoxy)
Ethyl carbamate

(81) Ethyl N- [2,3-dihydro-2,2-dimethylbenzofuran-7-yloxycarbonyl (methyl) aminothio] -N-isopropyl-
β-alaninate (82) 1- [3,5-dichloro-4- (3-chloro-5-trifluoromethyl-2-pyridyloxy) phenyl] -3- (2,6-difluorobenzoyl) urea (83) 1- (4-chlorophenyl) -3- (2,6
-Difluorobenzoyl) urea (84) 1- (3,5-dichloro-2,4-difluorophenyl) -3- (2,6-difluorobenzoyl)
Urea (85) 1- [3,5-dichloro-4- (1,1,
2,2-Tetrafluoroethoxy) phenyl] -3-
(2,6-Difluorobenzoyl) urea (86) trans-5- (4-chlorophenyl) -N
-Cyclohexyl-4-methyl-2-oxo-3-thiazolidinecarboxamide (87) 2-tert-butyl-5- (4-tert-butylbenzylthio) -4-chloropyridazine-3 (2H)-
ON (88) 1- [4- (2-chloro-4-trifluoromethylphenoxy) -2-fluorophenyl] -3-
(2,6-Difluorobenzoyl) urea (89) tert-butyl (E) -α- (1,3-dimethyl-5-phenoxypyrazol-4-ylmethyleneaminooxy) -p-toluate (90) 3,7 , 9,13-Tetramethyl-5,11-dioxa-2,8,11-trithia-4,7,9,12-tetraazapentadeca-3,12-diene-6,10-dione

(91) 1- (6-chloropyridine-3
-Ylmethyl) -N-nitroimidazolidin-2-ylideneamine (92) 5-ethoxy-3-trichloromethyl-1,
2,4-thiadiazole (93) 3,4-dichloropropionanilide (94) N-methoxymethyl-2-chloro-2 ', 6'-
Diethylacetanilide (95) 2,6-dinitro-N, N-dipropyl-4
-Trifluoromethylaniline (96) N- (1,1,1-trimethyl-2-oxa-4-indanyl) -5-chloro-1,3-dimethylpyravir-4-carboxamide (97) 3'-iso Propoxy-2- (trifluoromethyl) benzanilide (98) diisopropyl 1,3-dithiolane-2-
Ylidene malonate (99) 1,2,5,6-tetrahydropyrrolo [3,3
2,1-i, j] quinolin-4-one (100) 3-allyloxy-1,2-benzisothiazole-1,1-dioxide

(101) 5-Methyl [1,2,4] triazolo [3,4-b] benzothiazole (102) 1,2-bis (3-methoxycarbonyl-)
2-Thioureido) benzene (103) 1- (4-chlorobenzyl) -1-cyclopentyl-3-phenylurea (104) 6- (3,5-dichloro-4-methylphenyl) -3 (2H) -pyridazinone ( 105) 3- (3,5-dichlorophenyl) -N-
Isopropyl-2,4-dioxoimidazolidin-1-
Carboxamide (106) 3- (3,5-dichlorophenyl) -5-
Methyl-5-vinyl-1,3-oxazolidine-2,4
-Dione (107) manganese ethylenebisdithiocarbamate (108) manganese and zinc ethylenebisdithiocarbamate (109) N- (trichloromethylthio) cyclohex-4-ene-1,2-dicarboximide (110) 3'-isopropoxy -2-Methylbenzanilide

(111) Tetrachloroisophthalonitrile (112) 1- (4-chlorophenoxy) -3,3-
Dimethyl-1- (1H-1,2,4-triazole-1
-Yl) butanone (113) (E) -4-chloro-2- (trifluoromethyl) -N- [1- (imidazol-1-yl) -2
-Propoxyethylidene] aniline (114) methyl N- (methoxyacetyl) -N-
(2,6-Dimethylphenyl) alaninate (115) 3-chloro-N- (3-chloro-5-trifluoromethyl-2-pyridyl) -2,6-dinitro-
4-methylaniline (116) N-butoxymethyl-2-chloro-2 ', 6'
-Diethylacetanilide (117) ethyl N-chloroacetyl-N- (2,
6-Diethylphenyl) glycinate (118) 2- [1-methyl-2- (4-phenoxyphenoxy) ethoxy] pyridine (119) (E) -1- (4-chlorophenyl)-
4,4-Dimethyl-2- (1H-1,2,4-triazol-1-yl) -1-penten-3-ol (120) 1- (4-chlorophenyl) -4,4-dimethyl-2- (1H-1,2,4-triazole-1-
Il) Pentan-3-ol

(121) 2-Bromo-N- (α, α-
Dimethylbenzyl) -3,3-dimethylbutanamide (122) 1- (1-methyl-1-phenylethyl)
-3- (p-Tolyl) urea (123) 2- (2-naphthoxy) propionanilide (124) 2- (2,4-dichloro-3-methylphenoxy) propionanilide (125) 4- (2,4- Dichlorobenzoyl)-
1,3-Dimethyl-5-pyrazolyl p-toluenesulfonate (126) 4- (2,4-dichlorobenzoyl)-
1,3-Dimethyl-5-phenacyloxypyrazole (127) 4- (2,4-dichloro-3-methylbenzoyl) -1,3-dimethyl-5- (4-methylphenacyloxy) pyrazole (128) 2,4,6-Trichlorophenyl 4-nitrophenyl ether (129) 2,4-Dichlorophenyl 3-methoxy-4-nitrophenyl ether (130) 2,4-Dichlorophenyl 3-methoxycarbonyl-4-nitrophenyl ether

(131) 2-benzothiazole-2-
Iloxy-N-methylacetanilide (132) 2 ', 3'-dichloro-4- (ethoxymethoxy) benzanilide (133) 5-tert-butyl-3- (2,4-dichloro-5-isopropoxyphenyl) -1 , 3,4-Oxadiazol-2 (3H) -one (134) 2-amino-3-chloro-1,4-naphthoquinone (135) Methyl 2- [3- (4,6-dimethoxypyrimidine-2- (Il) ureidosulfonyl] benzoate (136) ethyl 5- [3- (4,6-dimethoxypyrimidin-2-yl) ureidosulfonyl] -1-methylpyrazole-4-carboxylate (137) O- (4-tert- Butylphenyl) N-
(6-Methoxy-2-pyridyl) -N-methylthiocarbamate (138) O- (3-tert-butylphenyl) N-
(6-Methoxy-2-pyridyl) -N-methylthiocarbamate (139) O- (4-chloro-3-ethylphenyl)
N- (6-methoxy-2-pyridyl) -N-methylthiocarbamate (140) O- (4-bromo-3-ethylphenyl)
N- (6-methoxy-2-pyridyl) -N-methylthiocarbamate

(141) O- (3-tert-butyl-4)
-Chlorophenyl) N- (6-methoxy-2-pyridyl) -N-methylthiocarbamate (142) O- (4-trifluoromethylphenyl)
N- (6-methoxy-2-pyridyl) -N-methylthiocarbamate (143) 1- (2-chlorobenzyl) -3- (α,
α-Dimethylbenzyl) urea (144) N- (3,5-dichlorophenyl) -1,
2-Dimethylcyclopropane-1,2-dicarboximide (145) Isopropyl 3,4-diethoxyphenylcarbamate (146) N- [4-chloro-2-fluoro-5-
(Pentyloxycarbonylmethoxy) phenyl]-
3,4,5,6-Tetrahydrophthalimide (147) 7-Fluoro-6- (3,4,5,6-tetrahydrophthalimide) -4- (2-propynyl)-
1,4-benzoxazin-3 (2H) -one (148) 2 ', 6'-dimethyl-N- (3-methoxy-
2-Tenyl) -2-chloroacetanilide (149) 1- [2-chloroimidazo [1,2-a]
Pyridin-3-ylsulfonyl] -3- (4,6-dimethoxypyrimidin-2-yl) urea (150) 3-isopropyl-1H-2,1,3-benzothiadiazin-4 (3H) -one- 2,2-dioxide

(151) 2- (1-Ethoxyiminobutyl) -5- [2- (ethylthio) propyl] -3-hydroxycyclohex-2-en-1-one (152) 2 ', 6'-diethyl -N- (2-propoxyethyl) -2-chloroacetanilide (153) S- (1-methyl-1-phenylethyl)
Piperidine-1-carbothioate (154) S-benzyl N-ethyl-N- (1,2
-Dimethylpropyl) thiol carbamate (155) 2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine (156) 2-methylthio-4,6-bis (ethylamino) -1,3 , 5-Triazine (157) 2-chloro-4,6-bis (ethylamino) -1,3,5-triazine (158) 2-methylthio-4-ethylamino-6-
(1,2-Dimethylpropylamino) -1,3,5-triazine (159) 3- [2- (3,5-dimethyl-2-oxocyclohexyl) -2-hydroxyethyl] glutarimide (160) Isopropyl ( 2E, 4E) -11-Methoxy-3,7,11-trimethyl-2,4-dodecadienoate (161) 2-tert-butylimino-3-isopropyl-5-phenyl-3,4,5,6- Tetrahydro-2
H-1,3,5-thiadiazin-4-one (162) 2-phenoxy-6- (neopentyloxymethyl) pyridine

(163) 3-chloro-2- [7-fluoro-4- (2-propynyl) -3,4-dihydro-
1,4-benzoxazin-3 (2H) -one-6-yl] -4,5,6,7-tetrahydro-2H-indazole (164) 4'-chloro-2 '-(α-hydroxybenzyl) iso Nicotinic acid anilide (165) 6- (benzylamino) purine (166) 3- (4-chlorophenyl) -1,1-dimethylurea (167) 3- (3,4-dichlorophenyl) -1,
1-Dimethylurea (168) 2,4-dinitro-6-sec-butylphenol (169) 2,4-Dimethyl-5- (trifluoromethylsulfonylamino) acetanilide (170) 6- (furfurylamino) purine

(171) 1-phenyl-3- [4-
(2-Chloropyridyl)] urea (172) S, S-dimethyl 2- (difluoromethyl) -4- (2-methylpropyl) -6- (trifluoromethyl) pyridine-3,5-dicarbothioate ( 173) 3- (4,6-dimethoxy-1,3,5-
Triazin-2-yl) -1- [2- (2-methoxyethoxy) phenylsulfonyl] urea (174) exo-1-methyl-4- (1-methylethyl) -2- (2-methylphenylmethoxy)- 7-oxabicyclo [2.2.1] heptane (175) 2,6-diethyl-N-[(2-cis-butenoxy) methyl] -2-chloroacetanilide Agrochemical active ingredient used in the production method of the present invention. The amount can be varied depending on the type and use of the agricultural chemical active ingredient, but is usually 0.01 to 20% by weight, preferably 0.1 to 10% by weight based on the total weight of the resulting agricultural chemical composition.
It is. The pesticidal active ingredient may also be a mixture of two or more pesticidal active ingredients.

Specific examples of yeasts used in the present invention include Saccharomyces cereviceae of the genus Saccharomyces, Saccharomyces rouxii, and Saccharomyces carlsberge.
nsis], Saccharomyces uvarum [Saccharomycesuva
rum], Endomyces vernalis of the genus Endomyces, Lipomyces lipofer of the genus Lipomyces, Lypomyces atarkeyi, and Tricosporon pullulans of the genus Trichosporone
], Candi Doutilus [Candi
da utills], Candida tropis
picallis], Candida lyp
olytica], Candida flaveri
] Etc. can be mentioned.

In the present invention, any yeast may be used, and the yeast may be alive or dead.
Of course, a yeast strain in which the components inside the dead yeast strain are leached may be used, or a yeast strain treated with a chemical such as an acid, an alkali or an enzyme may be used. There are various types of yeast such as oval, spherical, lens-shaped, columnar, and elliptical shapes depending on the type of yeast, and spherical, elliptical, and oval shapes are preferred. The particle size of the yeast used in the present invention may vary depending on the type of yeast used, but it is usually 5 to 20 μm. Further, these yeasts may be used as a mixture of two or more kinds at an arbitrary ratio. The amount of yeast used in the present invention may vary depending on the type of yeast, the type and content of the agrochemical active ingredient,
It is 0.01 to 20% by weight, preferably 0.1 to 10% by weight, based on the total weight of the obtained agrochemical composition.

The polyvinyl alcohol used in the present invention may be partially saponified polyvinyl alcohol or fully saponified polyvinyl alcohol, but partially saponified polyvinyl alcohol is preferable. In that case, those having a saponification degree of 70 to 90 mol% and a polymerization degree of 1500 or less are more preferable. For example, Gohsenol GL-05 (polyvinyl alcohol manufactured by Nippon Synthetic Chemical Industry, polymerization degree 1000).
Below, saponification degree 86.5-89 mol%), Gohsenol KL-05 (Nippon Gosei Kagaku Kogyo polyvinyl alcohol, polymerization degree 1000 or less, saponification degree 78.5-81.5)
Mol%) and the like. The amount of polyvinyl alcohol used in the present invention may vary depending on the type of polyvinyl alcohol and the type and content of the agrochemical active ingredient, but is usually 0.1 to 10% by weight relative to the total weight of the agrochemical composition obtained, It is preferably 0.5 to 5% by weight.

The carrier used in the present invention includes
Examples thereof include mineral carrier, white carbon, animal and plant carrier, and the like. As the mineral carrier, kaolinite,
Kaolin minerals such as dickite, nacrite, and halosite, chrysotile, lizzite, anticorite, serpentine such as amethite, calcium montmorillonite, magnesium montmorillonite, saponite, hectorite, sauconite, smectites such as hydelite, phyophyllite, talc , Mica such as pyrophyllite, muscovite, fengite, sericite and illite, silica such as cristobalite and quartz, hydrous magnesium silicate such as attapulgite and sepiolite, calcium carbonate such as dolomite, sulfate minerals such as gypsum and gypsum, zeolite , Zeolite, Tuff, Vermiculite, Laponite, Pumice, Diatomaceous earth, Clay, Acid clay, Activated clay, Diatomaceous earth,
Examples include flint, ammonium sulfate, urea, and ammonium salt. Examples of the white carbon include wet method silica, dry method silica, and a calcined product of wet method silica. Examples of animal and plant carriers include flour, sucrose, dextrin,
Wood flour, starch, bran, bran, chaff, soybean flour, carnauba wax, fats and oils and the like can be mentioned. These carriers may be used alone, or two or more kinds may be mixed and used at an arbitrary ratio. The amount of the carrier used in the present invention may vary depending on the type of the carrier, but is usually within the range of 0.1 to 99% by weight based on the total weight of the obtained agrochemical composition.

In the present invention, the aqueous suspension obtained by suspending the agrochemical active ingredient, yeast and polyvinyl alcohol in water may optionally contain a solvent, a binder and the like. Further, when the aqueous suspension is added to the carrier, the carrier may optionally contain a solvent, a binder, a surfactant, a stabilizer, a dye, a fragrance and the like.

Examples of the solvent used include decane,
Saturated aliphatic hydrocarbons such as tridecane, tetradecane, hexadecane and octadecane, unsaturated aliphatic hydrocarbons such as 1-undecene and 1-heneicosene, halogenated hydrocarbons such as SELECROLL S45 (solvent manufactured by Zeneca), Methyl ethyl ketone, ketones such as cyclohexanone, alcohols such as ethanol, butanol, octanol, etc., ethyl acetate, dimethyl phthalate, methyl laurate, ethyl palmitate, octyl acetate, dioctyl succinate, esters such as didecyl adipate, xylene, Ethylbenzene, octadecylbenzene, Solvesso 100 (exxon chemical solvent), Hisol SAS-
Alkylbenzenes such as 296 (solvent manufactured by Nippon Petrochemical), dodecylnaphthalene, tridecylnaphthalene, alkylnaphthalene such as Solvesso 200 (solvent manufactured by Exxon Chemical), ethylene glycol, diethylene glycol, propylene glycol monomethyl ether, 2-ethoxyethanol, etc. Glycols, glycol esters, glycol ethers, fatty acids such as oleic acid, capric acid, enanthate, polyglycols such as tetraethylene glycol, polyethylene glycol, polypropylene glycol, N, N-dimethylformamide, diethylformamide, etc. Acid amides, olive oil, soybean oil, rapeseed oil, castor oil, linseed oil, cottonseed oil,
Examples thereof include animal and vegetable oils such as palm oil, avocado oil and shark liver oil, mineral oils such as machine oil, and glycerin derivatives such as glycerin and glycerin fatty acid ester. In addition, these solvents can be used alone or as a mixture of two or more kinds of solvents at an arbitrary ratio, and the addition amount thereof is usually 10 to 500 parts by weight with respect to 100 parts by weight of the agrochemical active ingredient.

Examples of the binder used in the present invention include inorganic binders, natural organic binders, semi-synthetic binders, synthetic resin binders and waxes. Examples of the inorganic binder include bentonite, montmorillonite, water glass, colloidal silica and the like. Examples of the natural organic binder include starch, dextrin, casein, gelatin, glue, agar, gum arabic, corn starch, natural rubber, pulp liquid and the like. As the semi-synthetic binder, carboxymethyl cellulose, carboxymethyl cellulose sodium salt, hydroxypropylmethyl cellulose, nitrocellulose, cellulose acetate, methyl cellulose, ethyl cellulose, hydroxypropyl cellulose and other cellulosic binders, such as lignin, sodium lignin sulfonate, ammonium lignin sulfonate. Examples include lignin-based binders. Synthetic resin binders include high density polyethylene, low density polyethylene, polyolefins such as polypropylene, halogenated polyolefins such as polychloroethylene and polypropylene chloride, acrylic polymers such as polyacrylonitrile and polymethylmethacrylate, polystyrene, acrylonitrile. -Polystyrene-butadiene copolymer, polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, vinyl-based polymers such as chlorinated vinyl chloride, polyvinyl ether, polyvinylidene chloride, ketone-formalin resin, phenoxy resin , Synthetic rubber such as polybutadiene, polyisobutylene, polyisoprene, silicone resin,
Fluorine resin such as polyvinylidene fluoride and polytrifluoroethylene, acetal resin such as polyacetal,
Polyester such as nylon 6, nylon 66, polyethylene terephthalate, olefin oxides such as polyamide, polyimide, polyethylene oxide and polyphenylene oxide, carbonate resin such as polycarbonate, polysulfone resin, polyurethane, polyurethane such as polyurethane urea, epoxy resin, phenol resin , Melamine resin, maleic acid resin, urea resin, polyvinylpyrrolidone and the like. Examples of the wax include natural wax, petroleum wax, synthetic wax and the like. Examples of natural waxes include candelilla wax, carnauba wax, rice wax, wooden wax,
Examples include jojoba oil, beeswax, lanolin, spermaceti, beef tallow, ozokerite and ceresin. Examples of the petroleum wax include paraffin wax and microcrystalline wax. As a synthetic wax,
For example, montan wax, polyethylene wax, Fischer-Tropsch wax, sazol wax, hydrogenated castor oil, 12-hydroxystearic acid, stearic acid, stearyl alcohol, laurone, stearone, isopropyl myristate, glycerin fatty acid ester,
Examples thereof include glycol fatty acid ester and sorbitan fatty acid ester.

The binder used in the present invention is
When the binder is water-soluble, it may be dissolved in water and added as an aqueous solution, or may be added as a powder,
It may be used as a melt that is melted by heating,
It may be used as an emulsion in which these fine particles are dispersed in water. When the binder is insoluble in water, it is preferably added as an emulsion dispersed in water, used as a melt melted by heating, or used as an emulsion in which these fine particles are dispersed in water. Two or more kinds of binders may be mixed and used at an arbitrary ratio. Further, the addition amount of the binder may vary depending on the kind of the binder, but it is usually 0.1 to 40% by weight, preferably 1 to 30% by weight based on the total weight of the obtained agrochemical composition.

Examples of the surfactant used in the present invention include polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, polyoxyethylene lanolin alcohol, polyoxyethylene alkylphenol formalin condensate, polyoxyethylene sorbitan fatty acid ester, and polyoxyethylene sorbitan fatty acid ester. Oxyethylene glyceryl monofatty acid ester, polyoxypropylene glycol monofatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene castor oil derivative, polyoxyethylene fatty acid ester, higher fatty acid glycerin ester, sorbitan fatty acid ester, sucrose fatty acid ester, poly Oxyethylene polyoxypropylene block polymer, polyoxyethylene fatty acid amide, alkylol Nonionic surfactants such as amide and polyoxyethylene alkylamine, alkylamine hydrochloride such as dodecylamine hydrochloride, alkyl quaternary ammonium salt, alkyltrimethyl quaternary ammonium salt such as dodecylalkyltrimethylammonium salt, alkyldimethylbenzylammonium salt Cationic surfactants such as salts, alkylpyridinium salts, alkylisoquinolinium salts, dialkylmorpholinium salts, benzethonium chloride, polyalkylvinylpyridinium salts, sodium fatty acid such as sodium palmitate, polyoxyethylene lauryl ether carbonate Amino acid condensates of higher fatty acids such as sodium ethercarboxylates such as sodium acidate, sodium lauroylsarcosine, sodium N-lauroylglutamate, dodecylbe Higher alkyl sulfonates such as sodium zensulfonate, higher fatty acid ester sulfonates such as lauric acid ester sulfonate, dialkyl sulfosuccinic acid such as dioctyl sulfosuccinate, higher fatty acid amide sulfonic acid such as oleic acid amide sulfonate, Alkyl allyl sulfonates such as dodecyl benzene sulfonate and diisopropyl naphthalene sulfonate, formalin condensates of alkyl allyl sulfonate, higher alcohol sulfate ester salts such as pentadecane-2-sulfate, sodium polyoxyethylene dodecyl ether sulfate, etc. Polyoxyethylene alkyl ether sulfate, dipolyoxyethylene dodecyl ether phosphate ester and other polyoxyethylene alkyl phosphate esters, styrene-maleic acid Polymers, anionic surfactants such as alkyl vinyl ether-maleic acid copolymers, N-laurylalanine, N, N, N-trimethylaminopropionic acid, N,
N, N-trihydroxyethylaminopropionic acid, N
-Hexyl N, N-dimethylaminoacetic acid, 1- (2-
Examples include amphoteric surfactants such as carboxyethyl) pyridinium betaine and lecithin. Two or more kinds of these surfactants may be mixed and used, and the amount thereof is generally 0.1 to 10% by weight based on the total weight of the obtained agrochemical composition.

Examples of the stabilizer used in the present invention include antioxidants, light stabilizers, ultraviolet absorbers, quenchers, radical scavengers, peroxide decomposers and the like. Examples of the antioxidants include phenolic antioxidants, amine antioxidants, phosphorus antioxidants, sulfur antioxidants and the like. As an ultraviolet absorber,
Examples thereof include benzotriazole-based UV absorbers, benzophenone-based UV absorbers, benzoate-based UV absorbers, cyanoacrylate-based UV absorbers, salicylic acid-based UV absorbers, and hindered amine-based UV absorbers. Examples of the quencher include organic nickel compounds. Also, isopropyl acid phosphate,
Stabilizers such as liquid paraffin, epoxidized soybean oil, epoxidized linseed oil, or epoxidized vegetable oil such as epoxidized rapeseed oil can also be used. Further, these stabilizers may be used as a mixture of two or more kinds in an arbitrary ratio.
The amount of the stabilizer added may vary depending on the type of the stabilizer, but it is usually 0.01 with respect to the total weight of the obtained agrochemical composition.
~ 5% by weight.

In addition to the above, in the present invention, rhodamines such as rhodamine B and solar-rhodamine, yellow No. 4,
Colorants such as blue 1 and red 2 tar dyes,
Esters of ethyl acetoacetate, methyl anthranilate, isoamyl isovalerate, ethyl enanthate, ethyl cinnamate, isoamyl butyrate, etc., organic acids such as caproic acid, cinnamic acid, cinnamic alcohol, geraniol, citral, decyl alcohol Alcohols such as, vanillin, piperonal, aldehydes such as perilaldehyde, malnitol, ketones such as methyl β-naphthyl ketone, and fragrances such as menthol may be added. It is usually 0.01 to 5% by weight based on the total weight of the obtained agrochemical composition.

Next, the manufacturing method of the present invention will be described in detail. The production method of the present invention generally comprises a microcapsule obtained by encapsulating a pesticide active ingredient in a yeast cell and polyvinyl alcohol suspended in water, and if necessary, a solvent and an aqueous suspension containing a binder are prepared. And a step of adding the aqueous suspension to a powder containing a carrier and, if necessary, a solvent, a binder, a stabilizer, a dye, a fragrance and the like, kneading and extrusion granulating. The step of preparing the aqueous suspension is performed, for example, as follows.

An oil phase is prepared by mixing the pesticide active ingredient, yeast and, if necessary, a solvent. On the other hand, an aqueous solution is prepared by mixing polyvinyl alcohol and, if necessary, a solvent, a binder, a stabilizer and the like. Then, the oil phase prepared above is added to a polyvinyl alcohol-containing aqueous solution and deflocculated by a deflocculator. Examples of the peptizer used include a high-speed rotary high-shear stirring agitator, a dissolver, a colloid mill, a homogenizer, an ultrasonic peptizer, and a stirring motor. Specific examples thereof include T.I. K. Auto Homo Mixer (Tokuki Kika Kogyo Co., Ltd.), T.M. K. Homomic Line Flow (Tokushu Kika Kogyo Co., Ltd.), Ultra Homo Mixer (Nippon Seiki Seisakusho), NNK colloid mill (Nippon Seiki Seisakusho) and the like can be mentioned. The number of revolutions during peptization may vary depending on the type and structure of the peptizer, but is usually 500 to 10,000 r
pm, preferably 3000-6000 rpm, and the temperature during peptization is usually 5-70 ° C. The peptization time may vary depending on the type and structure of the peptizer and the type of peptized liquid, but is usually 0.01 to 3 hours, preferably 0.
05 to 0.2 hours. Thus, the microcapsules in which the agricultural chemical active ingredient is encapsulated in the yeast cells and polyvinyl alcohol are suspended in water, and an aqueous suspension containing a solvent and a binder is prepared if necessary.

The aqueous suspension can also be prepared as follows. An oil phase is prepared by mixing the pesticide active ingredient, yeast, and a solvent, if necessary. On the other hand, an aqueous solution is prepared by mixing polyvinyl alcohol and, if necessary, a solvent, a binder, a stabilizer and the like. Then, the oil phase prepared above is added to the polyvinyl alcohol-containing aqueous solution and stirred with a stirrer such as a high-speed rotary stirrer, a chemical mixer, and a three-one motor (Stirrer manufactured by Shinto Kagaku). The rotation speed during stirring may vary depending on the type and structure of the stirrer and the type of liquid to be stirred, but it is usually 50 to 200 rpm, and the temperature during stirring is usually 5 to 70 ° C. The stirring time may vary depending on the type and structure of the stirrer and the type of liquid to be stirred, but is usually 0.1 to 5 hours, preferably 1
~ 3 hours. Thus, the microcapsules in which the agricultural chemical active ingredient is encapsulated in the yeast cells and polyvinyl alcohol are suspended in water, and an aqueous suspension containing a solvent and a binder is prepared if necessary.

Further, the aqueous suspension can be prepared as follows. A yeast dispersion liquid is prepared by mixing yeast, water and, if necessary, a binder and the like with a mixer. On the other hand, if necessary, add solvent etc. to the pesticide active ingredient,
This is emulsified in an aqueous solution containing polyvinyl alcohol. At the time of emulsification, a high-speed rotation high-shear type stirring peptizer, a homogenizer and the like can be mentioned, and specific examples include:
T. K. An example is an auto homomixer. Next, the yeast dispersion liquid and the emulsion of the agrochemical active ingredient are mixed with a mixer. Examples of the mixer used include a three-one motor, and the number of rotations at the time of mixing may vary depending on the type and structure of the mixer, but is usually 50 to 150.
It is 0 rpm, and the temperature during mixing is usually 5 to 70 ° C. The mixing time is usually 3 to 20 hours. Thus, the microcapsules in which the agricultural chemical active ingredient is encapsulated in the yeast cells and polyvinyl alcohol are suspended in water, and an aqueous suspension containing a solvent and a binder is prepared if necessary. In addition, in order to efficiently include the pesticidal active ingredient in the yeast cells, it is preferable to elute the intracellular components in advance. For example, ethanol was added to the yeast dispersion, and the components inside the cells were eluted by stirring to remove the components eluted by centrifugation, followed by the treatment as described above. It is preferred to produce the composition of the present invention.

The step of adding the aqueous suspension to the carrier, kneading and extrusion granulating is carried out, for example, as follows. The aqueous suspension prepared as described above is added to a powder containing a carrier and optionally a surfactant, a binder, a solvent, a stabilizer, a dye, a fragrance, etc. by a method such as dropping or spraying and mixing. , Knead. As a device used for mixing and kneading, various mixers and kneaders are used, and for example, a chemical mixer, a Nauta mixer, a ribbon mixer, a kneader and the like can be used. Upon mixing and kneading, it is preferable to add an appropriate amount of water. Next, the obtained mixture is granulated by an extrusion granulation method. Examples of the extrusion granulator used include, for example, a screw type extrusion granulator, a roll type extrusion granulator, a disk pelleter, a pellet mill, a basket type extrusion granulator, a blade type extrusion granulator, and an oscillating type extrusion machine. A granulator, a gear type extrusion granulator, a ring die type extrusion granulator, etc. are mentioned. The obtained granulated product is dried, shape-controlled, crushed, sieved, sized, etc., if necessary.

The pesticidal composition thus obtained is a granular material such as fine particles, fine particles and granules, and is usually 0.1 mm to
It has a particle diameter of 30 mm, preferably 0.3 mm to 10 mm, and its shape is spherical, ellipsoidal, discoid, rod-shaped, dumbbell-shaped, columnar, polygonal columnar, conical, polygonal pyramidal, cubical,
It can have any shape such as a rectangular parallelepiped shape, an amorphous shape, a disk shape, a capsule shape, a finger shape, an almond shape, a lens shape, a corner disk shape, and a corner disk shape. The pesticide composition is a plant pot, nursery box, paddy field, upland field, lawn, orchard, forest, agricultural land such as forest, river, pond, lake, swamp, moat, reservoir, etc. It is used by the usual pesticide application method.

[0041]

EXAMPLES The present invention will now be described with reference to production examples and test examples, but the present invention is not limited to the following examples. In the following examples, parts represent parts by weight (absolute dry parts by weight for yeast). First, a production example of the present invention will be shown. Production Example 1 10 parts of ethanol was added to 100 parts of a dispersion liquid containing 5 parts of commercially available baker's yeast (live yeast produced by Kanegafuchi Chemical Co., Saccharomyces cerevisiae), and the mixture was stirred at 40 ° C. for 24 hours to dissolve the water in the yeast cells. The sex component was eluted outside the cells and the water-soluble component was removed by centrifugation to obtain a dispersion liquid of the yeast residue. 10 parts of fenitrothion (organophosphorus insecticidal active ingredient) was added to the obtained dispersion liquid and stirred at 50 ° C. for 5 hours to obtain a microcapsule dispersion liquid in which fenitrothion was encapsulated in yeast cells. Then, this dispersion was added to 35 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.I.
K. An auto homomixer was used to deflocculate for 10 minutes under the conditions of a rotation speed of 5000 rpm and a temperature of 25 ° C. The obtained suspension was added to 81.5 parts of Shokoyama SP clay (manufactured by Shokoyama Mining Co., Ltd.),
Chemical mixer (H-85 type, domestic centrifuge Co., Ltd.)
After kneading, granulate using an extrusion granulator to obtain a particle size of 1.0
mm granules were obtained. The granulated product was dried at 50 ° C. for 1 hour, and then the granular product in the range of 0.8 to 1.2 mm was collected with a sieve to obtain an agrochemical composition (1).

Production Example 2 10 parts of ethanol was added to 100 parts of a dispersion containing 5 parts of commercially available baker's yeast (Kanebuchi Chemical's live yeast), and the mixture was stirred at 40 ° C. for 24 hours to give water-soluble components in yeast cells. Was eluted outside the cells and the water-soluble component was removed by centrifugation to obtain a dispersion liquid of the yeast residue. 20 parts of fenitrothion was added to the obtained dispersion liquid, and the mixture was stirred at 50 ° C. for 5 hours to obtain a microcapsule dispersion liquid in which fenitrothion was encapsulated in yeast cells. Next, this dispersion was added to 40 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.I. K.
Rotation speed 5000 rpm, temperature 25 with auto homomixer
It was peptized for 10 minutes under the condition of ° C. The obtained suspension was added to 71 parts of Bentonite Fuji (manufactured by Toyojun Yoko) and kneaded with a chemical mixer (H-85 type, domestic centrifuge Co., Ltd.), and then granulated using an extrusion granulator, A granulated product having a particle size of 2.0 mm was obtained. After drying the granulated product at 50 ° C. for 1 hour, the granules in the range of 1.5 to 2.5 mm were separated by a sieve to obtain a pesticide composition (2).

Production Example 3 5 parts of fenitrothion and 10 parts of phenylxylylethane were mixed, and 10 parts of de-nucleic acid Sanyo yeast (manufactured by Nippon Paper Industries Co., Ltd.) was added thereto, and three-one was prepared until the de-nucleated Sanyo yeast was uniformly dispersed. It stirred at 200 rpm using a motor. Next, 25 parts of this dispersion was added to 30 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.V. K.
Rotation speed 5000 rpm, temperature 25 with auto homomixer
It was peptized for 10 minutes under the condition of ° C. 55 parts of the obtained suspension was added to 72 parts of bentonite Fuji (manufactured by Toyojun Yoko) and kneaded with a chemical mixer (H-85 type, domestic centrifuge Co., Ltd.), and then granulated using an extrusion granulator. And grain size 3.0mm
To obtain a granulated product. After drying the granules at 50 ° C. for 1 hour, the granules in the range of 2.5 to 3.5 mm are separated by a sieve,
A pesticide composition (3) was obtained.

Production Example 4 3 parts of BPMC (carbamate insecticidal active ingredient) and 3 parts of phenylxylylethane were mixed to form a uniform solution, and 1.5 parts of baker's yeast (live yeast produced by Kanegafuchi Chemical Co., Ltd.) was added thereto. In addition, the mixture was stirred at 100 rpm using a three-one motor until the baker's yeast was uniformly dispersed. Next, 7.5 parts of this dispersion was added to an aqueous solution 30 containing 20% by weight of polyvinyl alcohol.
In addition to T. K. 800 rpm with an auto homomixer
Peptization was performed for 10 minutes under the conditions of 0 rpm and a temperature of 25 ° C. The obtained suspension was added to a mixture of 50 parts of Shokoyama SP Clay (manufactured by Shokoyama Mining Co., Ltd.) and 36.5 parts of Bentonite Fuji (manufactured by Toyojun Yoko), which had been mixed in a mixer in advance, and a chemical mixer (H- Type 85, domestic centrifuge Co., Ltd.) and then granulated using an extrusion granulator to obtain a granulated product having a particle size of 0.7 mm. After drying the granulated product at 50 ° C for 1 hour, 0.5 through a sieve.
Granules in the range of up to 0.9 mm were collected to obtain pesticide composition (4).

Production Example 5 2 parts of ethanol was added to 20 parts of a dispersion liquid containing 1 part of commercially available baker's yeast (Kanabuchi Kagaku live yeast), and the mixture was stirred at 40 ° C. for 24 hours to give water-soluble components in yeast cells. Was eluted outside the cells and the water-soluble component was removed by centrifugation to obtain a dispersion liquid of the yeast residue. To the obtained dispersion liquid, 3 parts of BPMC was added and stirred at 50 ° C. for 5 hours to obtain a microcapsule dispersion liquid in which BPMC was encapsulated in the yeast cells. Next, this dispersion was added to 20 parts of an aqueous solution containing 5% by weight of polyvinyl alcohol and stirred for 1 hour under the conditions of a rotation speed of 200 rpm and a temperature of 25 ° C. by a three-one motor.
65 parts of Shokoyama SP clay (manufactured by Shokoyama Mining Co., Ltd.), 20 parts of bentonite Fuji (manufactured by Toyojun Yoko), 5 parts of sodium carboxymethyl cellulose, Solpol 5060 (manufactured by Toho Chemical Co., Ltd.) Surfactant)
In addition to the mixture of 5 parts, a chemical mixer (H-85 type,
After kneading with a domestic centrifuge), it was granulated using an extrusion granulator to obtain a granulated product having a particle size of 0.5 mm. Granulate 5
After drying at 0 ° C. for 1 hour, the granules in the range of 0.4 to 0.6 mm were separated by a sieve to obtain an agrochemical composition (5).

Production Example 6 0.2 part of baker's yeast (live yeast produced by Kanegafuchi Chemical Co., Ltd.) was added to a mixed solution of 0.5 part of pyriproxyfen (insect growth regulating active ingredient) and 0.5 part of phenylxylylethane. , Using the three-one motor until the baker's yeast is evenly dispersed 150
Stir at rpm. Next, 1.2 parts of this dispersion was added to 5 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.V. K. Rotation speed 3000 rpm with auto homomixer,
Peptization was performed for 10 minutes at a temperature of 40 ° C. 6.2 parts of the obtained suspension was mixed in advance with a mixer, 58.3 parts of Shokoyama SP clay (manufactured by Shokoyama Mining Co., Ltd.), 35 parts of bentonite Fuji (manufactured by Toyojun Yoko), Solpol 5060 (manufactured by Toho Kagaku). Surfactant) 5 parts in addition to the chemical mixer (H-
85 type, domestic centrifuge Co., Ltd.) and then granulated using an extrusion granulator to obtain a granulated product having a particle size of 0.9 mm. After drying the granulated product at 50 ° C. for 1 hour, 0.7-1.
Granules within a range of 4 mm were collected to obtain a pesticide composition (6).

Production Example 7 2 parts of brewer's yeast (manufactured by Asahi Breweries) were added to 6 parts of butamiphos (organophosphorus herbicidal active ingredient), and 150 rpm using a three-one motor until the brewer's yeast was uniformly dispersed.
It was stirred at. Next, 8 parts of this dispersion was added to 20 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.I. K.
Rotation speed 3000 rpm with auto homomixer, temperature 25
It was peptized for 10 minutes under the condition of ° C. 28 parts of the obtained suspension was added to calcium carbonate NN200 (calcium carbonate manufactured by Nitto Koka Kogyo).
In addition to 90 parts, after kneading with a chemical mixer (H-85 type, domestic centrifuge Co., Ltd.), granulation was performed using an extrusion granulator to obtain a granulated product having a particle size of 1.2 mm. After drying the granulated product at 50 ° C. for 1 hour, the granular product in the range of 1.0 to 1.4 mm was separated by a sieve to obtain a pesticide composition (7).

Production Example 8 6 parts of butamiphos were added to 10 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol, and T. K. 16 parts of an emulsion was obtained by deflocculating with an auto homomixer at a rotation speed of 6000 rpm and a temperature of 25 ° C. for 10 minutes. On the other hand, 10 parts of ethanol was added to 100 parts of a dispersion liquid containing 5 parts of commercially available baker's yeast (Kanebuchi Chemical's live yeast) and stirred at 40 ° C. for 24 hours to remove the water-soluble components in the yeast cells from the outside of the cells. The water-soluble component was removed by centrifugation to obtain a dispersion liquid of the yeast residue. 16 parts of the above-mentioned emulsion was added to the obtained dispersion, and the mixture was stirred at 150 rpm for 3 hours at 25 ° C. using a three-one motor to obtain a microcapsule suspension containing butamiphos in yeast cells. It was The obtained suspension was added to 88 parts of Shokoyama SP clay (manufactured by Shokoyama Mining Co., Ltd.) and kneaded with a chemical mixer (H-85 type, domestic centrifuge Co., Ltd.), and then granulated using an extrusion granulator. Then, a granulated product having a particle size of 0.9 mm was obtained. After drying the granulated product at 50 ° C. for 1 hour,
Granules in the range of 0.7 to 1.4 mm were collected with a sieve to obtain a pesticide composition (8).

Production Example 9 3 parts of ethanol was added to 30 parts of a dispersion containing 1.5 parts of commercially available baker's yeast (live yeast produced by Kanegafuchi Chemical Co., Ltd.), and the mixture was stirred at 40 ° C. for 24 hours to dissolve the water in the yeast cells. The sex component was eluted outside the cells and the water-soluble component was removed by centrifugation to obtain a dispersion liquid of the yeast residue. To the obtained dispersion liquid, 3 parts of fenitrothion was added and stirred at 50 ° C. for 5 hours to obtain a microcapsule dispersion liquid in which fenitrothion was encapsulated in yeast cells. Next, this dispersion was added to 8 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.I. K. It was deflocculated for 5 minutes with an auto homomixer at a rotation speed of 5000 rpm and a temperature of 25 ° C. The suspension obtained is Shokoyama SP
After being added to 94.7 parts of clay (manufactured by Shokoyama Mining Co., Ltd.), it was kneaded with a chemical mixer (H-85 type, domestic centrifuge Co., Ltd.), and then granulated using an extrusion granulator to give a particle size of 0. A 9 mm granulated product was obtained. After drying the granulated product at 50 ° C. for 30 minutes, the granules in the range of 0.7 to 1.2 mm are collected with a sieve,
An agrochemical composition (9) was obtained.

Production Example 10 Beer yeast (manufactured by Asahi Breweries) in 3 parts of fenitrothion
1.5 parts was added, and the mixture was stirred at 150 rpm using a three-one motor until the baker's yeast was uniformly dispersed. next,
4.5 parts of this solution was added to 8 parts of an aqueous solution containing 10% by weight of polyvinyl alcohol to prepare a T.I. K. It was deflocculated for 5 minutes with an auto homomixer at a rotation speed of 5000 rpm and a temperature of 25 ° C. 12.5 parts of the obtained suspension was added to 94.7 parts of Shokoyama SP Clay (manufactured by Shokoyama Mining Co., Ltd.), followed by kneading with a chemical mixer (H-85 type, domestic centrifuge Co., Ltd.) and then extrusion. Granulation was performed using a granulator to obtain a granulated product having a particle size of 0.9 mm. After drying the granulated product at 50 ° C. for 30 minutes, the granules in the range of 0.7 to 1.2 mm were collected with a sieve to obtain an agrochemical composition (10).

Next, the following test examples are shown in order to show the excellent residual effect of the agrochemical composition obtained by the production method of the present invention. Test Example 1 Each of the pesticide composition (9) and the pesticide composition (10) was placed in a petri dish having an inner diameter of 6 cm, and water was added. This petri dish was allowed to stand at 40 ° C. for 2 weeks, after which the compositions remaining in the petri dish were recovered, and the amount of active ingredient contained in them was determined by gas chromatography. And the following equation

[Equation 1] The residual rate of the active ingredient was calculated by. The results are shown in Table 1.

[0052]

[Table 1] As shown in the above table, the pesticidal composition obtained by the production method of the present invention showed almost no disappearance of the active ingredient even after storage at 40 ° C. for 2 weeks.

[0053]

EFFECTS OF THE INVENTION According to the method for producing an agricultural chemical composition of the present invention, an agricultural chemical composition having excellent residual effect can be obtained by a simple and inexpensive method.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiro Otsubo 4-2-1 Takashi, Takarazuka-shi, Hyogo Sumitomo Chemical Co., Ltd. (72) Inventor Mamoru Ishiguro 3-4-2 Marunouchi, Chiyoda-ku, Tokyo Sanryo Paper Co., Ltd.

Claims (1)

[Claims] 1. A carrier which is an aqueous suspension obtained by suspending polyvinyl alcohol and microcapsules containing a pesticidal active ingredient which is a pest control active ingredient or a plant growth regulating active ingredient in yeast cells and polyvinyl alcohol. A method for producing a granular pesticidal composition, which comprises adding to the above and performing extrusion granulation.