Benzotriazolyl-alkylene bisphenol compounds, process for their p

Details Benzotriazolyl-alkylene bisphenol compounds, process for their p Benzotriazolyl-alkylene bisphenol compounds, process for their p

1997-12-08

1999-08-03

Richter, Johann

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252404, 548259, 548260, C09K 1508, C09K 1516, C09K 1524, C07D24920

Patent

active

059321423

ABSTRACT:
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.

REFERENCES:
patent: 4937348 (1990-06-01), Kubota
patent: 5229521 (1993-07-01), Luisoli et al.
patent: 5387691 (1995-02-01), Falk et al.
patent: 5439955 (1995-08-01), Falk et al.

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