the series consists of benzophenones chemical, and application of the composed as a stabilizer for polymers

摘要

1312824 Benzophenone derivatives EASTMAN KODAK CO 10 April 1970 [14 April 1969] 17147/70 Heading C2C [Also in Division C3] The invention comprises compounds of the formula where n is 2-4 and X is a polyvalent organic radical derived from a cycloaliphatic or aromatic polybasic acid or n is 3 or 4 and X is a polyvalent organic radical derived from an aliphatic polybasic acid. The compounds are prepared by reacting 2 - hydroxy - 4 - (2- hydroxyethoxy)benzophenone with a polybasic acid or anhydride.