Johoku Chemical Co., Ltd.

Eisuke Kanagawa

Toshiyuki Yamauchi

Hideo Aoki

Kazuyuki Ishihara

Yoshikatsu Osamura

Masuo Omichi

Tomohiro Tanino

Naoyuki Sugii

A process for production of carboxylic acid aryl esters which comprises reacting a carboxylic acid having at least one carboxyl group with a di- or tri-aryl phosphite compound, in the presence of a basic compound and/or water. The carboxylic acid aryl esters can also be produced by reacting a carboxylic acid or a basic salt thereof with a diaryl phosphite compound.

Process for production of carboxylic acid aryl esters

A process for preparing benzotriazolyl-alkylene bisphenol compounds which comprises reacting a 2-hydroxyphenylbenzotriazole and a 2,4-substituted phenol with an aldehyde in the presence of a basic catalyst and an amine compound; benzotriazolyl-alkylene bisphenol compounds obtained by the process; and stabilized organic materials containing the resulting benzotriazolyl-alkylene bisphenol compounds in an amount of 0.01-10 percent by weight. It is possible to prepare the benzotriazolyl-alkylene bisphenol compounds at a high yield, and organic materials can be effectively stabilized with the resulting compounds.

Benzotriazolyl-alkylene bisphenol compounds, process for their

A 2-hydroxyphenylbenzotriazole is reacted with a formaldehyde and an amino alcohol in an organic solvent in the presence of a basic catalyst. It is thereby possible to obtain bis(2-hydroxyphenyl-3-benzotriazole) methanes efficiently and at a high yield.

Process for preparing bis (2-hydroxyphenyl-3-benztriazole) methanes

Growing community of inventors

Kitamoto, Japan

Eisuke Kanagawa