Ultraviolet light stabilizers

Abstract

Abstract Ultraviolet light stabilized polymers having incorporated therein a stabilizing amount of a compound having the general formula: WHEREIN R1 represents a hydrogen atom, an alkyl group or an acetyl group, R3R4, R5 and R6 are the same or different and each represents a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group or an alkoxy group having up to 12 carbon atoms or an aryl group, n being 1 or 2 and, when n 1,R2 a hydrogen atom, an alkyl group, an acyl group having up to 20 carbon atoms, a substituted or non-substituted aroyl group, a phenoxy carbonyl group or a substituted or non-substituted benzene sulfonyl group and, when n 2,R2 is a sulfonyl, carbonyl or dioxaloyl group or a group having the formula WHERE Z represents a phenylene group or an alkylidene group having up to 12 carbon atoms. Many of the compounds within this general formula are novel per se, and accordingly are claimed as such.

Inventors

• 👤 Reginoldus Havinga
• 👤 Pieter Dirk Swaters

Bibliographic Details