Method of photostabilizing UV absorbers, particularly dibenzyolmethane derivatives, e.g., Avobenzone, with cyano-containing fused tricyclic compounds

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专利权人:

Craig A. Bonda

发明人:

Craig A. Bonda,Shengkui Hu

申请号：

US13588662

公开号：

US09125829B2

申请日:

2012.08.17

申请国别(地区):

US

年份:

2015

代理人:

摘要：

A photostabilized photoactive composition comprising a mixture of a photoactive compound that develops a singlet excited state, or fluoresces when subjected to UV radiation and an effective amount of an excited state quencher comprising a cyano-containing fused tricyclic compound of formula (I):wherein: A is selected from the group consisting of O, S, C═O, andn is selected from the group consisting of 0 and 1 and, R1 and R2 are each independently selected from the group consisting of alkyl, cycloalkyl, ether, aryl, and amino.

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