Hokko Chemical Industry Co., Ltd.

Satoru Moriyama

Hiromichi Ishikawa

Tsugio Uchiyama

Kimiyoshi Kaneko

Kazuhiko Kitaori

Takuo Wada

Takashi Kobayashi

Shinji Yonemura

Tatsuo Noguchi

Tadashi Chono

Kaoru Chiba

Agent for imparting a sustained release property to a pesticide, a

Compounds of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as herein defined useful as insecticides, is described.

Insecticidal benzoyl hydrazone derivatives

New phenylthionophosphonic acid O,O-di-esters of the general formula: ##STR1## wherein R.sub.1 denotes a lower alkyl group; R.sub.2 denotes a hydrogen atom, a lower alkyl group or an unsaturated lower alkyl group; and R.sub.3 denotes a lower alkyl group or an unsaturated lower alkyl group are provided, which have high insecticidal, miticidal and nematocidal activities and are useful as pesticidal agents to be applied to insect, acarine and/or nematode pests.

Pesticidal phenylthionophosphonic acid esters

New organophosphoric acid ester anhydride derivatives, more particularly new thiopyrophosphoric acid P,P,P'-trialkylester-P'-dialkylamide of the formula ##STR1## wherein R.sub.1 is an alkyl group of 3 to 6 carbon atoms and R.sub.2, R.sub.3 and R.sub.4 may be the same or different from each other and each are an alkyl group of 1 to 6 carbon atoms are now provided. These new organophosphoric acid ester anhydride derivatives have high insecticidal, miticidal and nematocidal activities and are useful as an insecticidal, miticidal and nematocidal agent.

Organophosphoric acid ester anhydrides as pesticides

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Hatano, Japan

Satoru Moriyama