Sumitomo Chemical Company, Limited

Hayashibara Biochemical Laboratories, Inc.

Kozo Tsuji

Shigenori Tsuda

Tsuneyuki Nagase

Masanori Fujimoto

Nobuhiro Toyota

Fumio Fujita

Toshiro Ohtsubo

Hiroomi Matsunaga

Seizo Nakashio

Goro Shinjo

Hitoshi Kawada

Masashi Watanabe

Yukio Manabe

Teruo Saito

Fujio Masuko

Manabu Tagami

Takami Sato

Atsuo Mori

Yukikazu Okamoto

Fumio Horide

Hiroshi Fuyama

Ryo Yoshida

Shuji Kitamura

Kiyohiko Nakae

Tadashi Ooishi

Hisami Takeda

Kiyoshi Kasamatsu

Takeo Oyamada

Masao Ogawa

Yasuaki Abe

Shozo Horikiri

Takaaki Itoh

Masahiro Domoto

Teruyoshi Usamoto

Akio Fukui

Kosuke Fukami

Eiichi Ichiki

Fumio Fukita

Kenzi Urayama

Hisao Namioka

Sigel Fujimura

Norishige Tsukada

Kazuo Hagihara

Microencapsulated pyrethroidal cockroach-controlling composition is provided, which has an excellent residual effect. The composition comprises phenylxylylethane and a pyrethroidal compound and is encapsulated in microcapsules formed of a polyurethane wall which have an average particle diameter of not more than 80 .mu.m, a wall thickness of not more than 0.3 .mu.m, and a value of the average particle diameter/wall thickness of 100-400.

Microencapsulated cockroach-controlling composition

An insecticidal and/or acaricidal and/or nematicidal composition having a rapid efficacy and residual activity which comprises a mixture of a poorly water-soluble organophosphorus insecticide and/or acaricide and/or nematicide and/or a poorly water-soluble carbamate insecticide and/or acaricide which have been microencapsulated in water-insoluble polymer coatings with a dispersing agent used in forming a microcapsule part, with a poorly water-soluble pyrethroid insecticide and/or acaricide emulsified or suspended in water with the above-mentioned dispersing agent used in forming a flowable part.

Pesticidal composition containing a microencapsulated organo-phosphorus

The present invention discloses emulsifiable pesticidal solid compositions obtained by spray-drying aqueous emulsions comprising (a) pesticides having a melting point of not higher than 70.degree. C., (b) surfactants, (c) dextrin and/or lactose, and (d) water and, if necessary and desired, (e) organic solvents and/or water soluble carriers. The emulsifiable pesitcidal solid compositions are easy in handling and can be readily emulsified.

Emulsifiable pesticidal solid compositions

Insecticidal wettable powders containing an insecticide which is liquid at room temperature and a calcined synthetic hydrated silicon dioxide, which can retain its insecticidal effect for a long time without separating oil drops when used by diluting with water.

Insecticidal wettable powder

Termites are prevented by applying thereto microencapsulated organophosphorus termite controlling composition in an amount of 5-100 g as an effective ingredient. The composition comprises an organophosphorus insecticidal compound encapsulated in a microcapsule formed of a polyurea or polyurethane wall and having an average particle diameter of not more than 80 .mu.m, a wall thickness of 0.1-1 .mu.m, and a value of the average particle diameter/wall thickness of 20-400.

Method for preventing termites and microencapsulated organophosphorus

A microencapsulated insecticidal composition has excellent residual effect which comprises an organophosphorus insecticide encapsulated in a wall formed of a polyurea and having an average particle diameter of not more than 80 .mu.m, a wall thickness of not more than 0.3 .mu.m and a ratio of an average particle diameter/wall thickness of not less than 250.

Microencapsulated organophosphorus insecticidal composition for

An oil-in-water pesticidal emulsion which comprises one or more of hydrocarbons represented by the formula, ##STR1## wherein X.sub.1, X.sub.2, Y.sub.1, Y.sub.2, Z.sub.1 and Z.sub.2, which may be the same or different, represent a hydrogen atom or an alkyl group having two or less carbon atoms, R.sub.1 and R.sub.2, which may be the same or different, represent a hydrogen atom or a methyl group, and n represents 0 or 1, in an oil-in-water pesticidal emulsion containing an active ingredient having a pesticidal activity, of which the melting point is 0.degree. C. or higher and the solubility at 0.degree. C. in the hydrocarbons represented by the above formula is 10 wt. % or more (when two or more active ingredients are used together, said melting point and solubility shall be those of a mixture of these active ingredients).

Oil-in-water pesticidal emulsion

A fungicidal composition containing a fungicidally effective amount of tolchlofos-methyl [O,O-dimethyl O-(2,6-dichloro-4-methylphenyl) phosphorothioate] as an active ingredient, attapulgite clay as a carrier and polypropylene glycol as a stabilizer, its formulation and its use as a fungicide.

Fungicidal composition

An emulsifiable concentrate for weed control, which comprises 10 to 40 parts by weight of N'-[4-(4-methylphenethyloxy)phenyl]-N-methoxy-N-methylurea, 5 to 20 parts by weight of an emulsifier, 5 to 35 parts by weight of at least one of phenolic solvents of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or methyl, and 5 to 80 parts by weight of at least one of aromatic hydrocarbon solvents having 6 to 11 carbon atoms.

Emulsifiable concentrate for weed control

An oil-in-water insecticidal emulsion comprising 1 to 50% by weight of as an insecticidally active liquid ingredient at least one organophosphorus compound having a water-solubility of 1,000 ppm or less at a temperature of 10.degree. C.; 2 to 10% by weight of polyvinyl alcohol or gum arabic; and an appropriate amount of a thickener with the balance being water.

Oil-in-water organophosphorus insecticidal emulsion

An emulsifiable concentrate for weed control, which comprises 10 to 20 parts by weight of N'-[4-(4-methylphenethyloxy)phenyl]-N-methoxy-N-methylurea, 5 to 15 parts by weight of an emulsifier, 10 to 70 parts by weight of at least one of aromatic hydrocarbon solvents of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are each hydrogen or alkyl having 1 to 3 carbon atoms and 15 to 75 parts by weight of at least one of ketonic solvents having not more than 9 carbon atoms, of which the water solubility is not more than 10% by weight at room temperature.

An oil-in-water insecticidal and acaricidal emulsion comprising 1 to 50% by weight of as a hydrophobic insecticidally and acaricidally active liquid ingredient at least one ester of the formula (I): ##STR1## where X is a hydrogen atom, a chlorine atom, a bromine atom or a fluorine atom; and Y is a group of the formula: ##STR2## where R.sub.1 is a methyl group or a group of the formula: ##STR3## where R.sub.5 is a chlorine atom, a bromine atom, a fluorine atom or a methyl group; R.sub.2 is a hydrogen atom or a methyl group; R.sub.3 is a chlorine atom, a bromine atom, a fluorine atom or a tert-butyl group; and R.sub.4 is an isopropyl group or a cyclopropyl group; 2 to 10% by weight of polyvinyl alcohol or gum arabic; and 0.1 to 20% by weight of a thickener with the balance being water.

Oil-in-Water insecticidal and acaricidal emulsion

A method for improving the water-resistance of pullulan, which is a linear high polymer having the following structural formula: ##STR1## and useful as films, sheets, fibers and the like.

Method for improving water-resistance of pullulan

Cross-linked pullulans are obtained by the reaction of pullulan with a cross-linking agent selected from the group consisting of polycarboxylic acids, halogenated dicarboxylic acids, polycarboxylic anhydrides, aldehyde compounds, N-methylol compounds, isocyanate compounds, metaphosphoric acid salts, divinyl compounds, bis-aziridine and bifunctional compounds of the formula,

Cross-linked pullulan

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Nara, Japan

Kozo Tsuji