Ultraviolet light absorbing compounds based on benzyl substituted 2-(2- hydroxyphenyl) benzotriazoles
申请人:Chang Chia-Hu
公开号:US20120329885A1
公开(公告)日:2012-12-27
The present invention relates to ultraviolet light absorbing compounds having the formula I and compositions containing these compounds in combination with polymers and/or carriers:
wherein;
R
1
is hydrogen or a halogen atom or a straight-chain or branched alkyl group, an alkoxy group or a carboalkoxy group;
R
2
and R
2′
can be the same or different and individually are selected from the group consisting of hydrogen, an unsubstituted or substituted straight-chain or branched alkyl group, an alkoxy group, a carboxyalkyl group, a carboalkoxy, a carboxyl group, an hydroxyl group, and a halogen atom.
R
3
, R
4
and R
5
can be the same or different and individually are selected from the group consisting of hydrogen, a straight-chain or branched alkyl group, an alkylaryl group, an alkoxy group, a phenyl or substituted phenyl group, a cycloalkyl group, a carboalkoxy group, an arylalkyl group, an hydroxyl group and a halogen atom.