Sumitomo Chemical Company, Limited

Erika Carbon Dioxide Company, Ltd.

Dai-nippon Jachugiku Co., Ltd.

Yasuo Abe

Kazunobu Dohara

Mitsuyasu Makita

Takashi Yamaguchi

Takaaki Ito

Seietsu Aki

Ichiro Inoue

Yoshio Fujita

Hiroyuki Miyachi

The insecticidal composition of the present invention contains (a) 2,4-dioxo-1-(2-propynyl)-imidazolidin-3-ylmethyl chrysanthemate and (b) at least one carboxylic acid ester selected from the group consisting of monocarboxylic acid ester having 16 to 19 carbon atoms and dicarboxylic acid ester having 16 to 19 carbon atoms, the weight ratio of (a) to (b) being from 3:1 to 1:100.

Insecticidal compositions

A device for exterminating pests having a cylinder filled with carbon dioxide in which (a) pesticide(s) is(are) dissolved, piping coupled to the cylinder, and a plurality of capillary nozzles affixed to the piping, and a method of exterminating pests employed this device. The capillary nozzles are designed such that, considering adjacent capillary nozzles, the ratio of the nozzle exit area of the capillary nozzle close to the cylinder to the nozzle exit area of the capillary nozzle remote from the cylinder is set between 1:1.3 and 1:1.8. As a result, numerous independent enclosed spaces can be sprayed with little labor and in a short time by means of a small number of devices.

Device for exterminating pests and method of exterminating pest using

A stabilized insecticidal composition having improved stability to light and containing a synthetic pyrethroid insecticide such as chrysanthemum-monocarboxylic acid 5-propargyl-2-furyl methyl ester, chrysanthemum-monocarboxylic acid 2-methyl-5-propargyl-3-furyl methyl ester, chrysanthemum-monocarboxylic acid 5-propargyl-.alpha.-ethynyl-2-furyl methyl ester, chrysanthemum-monocarboxylic acid 5-benzyl-3-furyl methyl ester or 2,2-dimethyl-3-(2,2-dichlorovinyl)cyclopropane-1-carboxylic acid 5-benzyl-3-furyl methyl ester, and at least one of 3,5-di-t-butyl-4-hydroxyanisole and 2,2'-methylenebis(6-t-butyl-4-ethylphenol).

Stabilized insecticidal composition

Growing community of inventors

Toyonaka, Japan

Yasuo Abe