申请人:OTSUKA KAGAKU KABUSHIKI KAISHA
公开号:EP0855393A1
公开(公告)日:1998-07-29
An object of the present invention is to provide a novel bisbenzotriazolylphenol compound having a UV absorving effect. The bisbenzotriazolylphenol compound of the invention is represented by the formula
wherein A is a direct bond or represents a C1-6 alkylene group, a -C(CH3)2- group, a -C(C2H5)(CH3)- group, a -O- group or a -NH- group, R1 and R3 are the same or different and each represent a hydrogen atom, a C1-4 alkyl group, an aryl group, a C1-4 alkoxy group or a halogen atom, and R2 and R4 are the same or different and each represent a hydroxyl group or a C1-12 straight- or branched-chain hydroxyalkyl group.
本发明的目的是提供一种具有紫外线吸收效果的新型双苯并三唑基苯酚化合物。本发明的双苯并三唑基苯酚化合物由式表示
其中 A 是直接键或代表 C1-6 亚烷基、-C(CH3)2- 基团、-C(C2H5)(CH3)- 基团、-O- 基团或-NH- 基团,R1 和 R3 相同或不同,各自代表氢原子、C1-4 烷基、芳基、C1-4 烷氧基或卤原子,R2 和 R4 相同或不同,各自代表羟基或 C1-12 直链或支链羟烷基。