Mitsubishi Petrochemical Company Limited

Nobuhiko Fuga

Makoto Konnai

Makoto Takeda

Tetsuo Takematsu

Kaoru Ikeda

Kiyoshi Shugaya

Makoto Imanari

Hideyuki Takahashi

Yoshihisa Watanabe

Naohiro Nojiri

Tadashi Ayusawa

Kunio Uchimura

Takashi Shimodaira

Junichi Kanetaka

Masato Nakajima

Kuniaki Hayasi

A method of inhibiting the polymerization of styrene which comprises mixing with the styrene a minor but effective quantity of an inhibitor compound selected from the group consisting of 2-methylbenzoquinone-4-oxime, 2,3,5-trimethylbenzoquinone-4-oxime and mixtures thereof.

Method of inhibiting polymerization of styrene

A plant growth regulator comprising as an active ingredient a compound having a novel 2-sulfonyloxyethyl-phosphonic or -thionophosphonic acid skeleton of the formula ##STR1## and a process for the production of the above compound. A method for regulating the growth of plants which comprises applying the above regulator to plants or to the locus in which the plants are growing or will be grown.

Plant growth regulator

A plant growth regulator comprising as an active ingredient a compound having a novel 2-sulfonyloxyethylphosphonic or -thionophosphonic acid skeleton of the formula ##STR1## and a process for the production of the above compound. A method for regulating the growth of plants which comprises applying the above regulator to plants or to the locus in which the plants are growing or will be grown.

Process for producing hexamethyleneimine by catalytic hydrogenation of .epsilon.-caprolactam in a liquid phase which comprises contacting .epsilon.-caprolactam with hydrogen over a catalyst selected from the group consisting of:

Process for producing hexamethyleneimine

A process for production of acrylic acid by vapor phase catalytic oxidation of acrolein comprising effecting the catalytic oxidation in the presence of a catalyst comprising

Process for production of acrylic acid

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Ami, Japan

Nobuhiko Fuga