Patent ID: 8119830
Filing Date: 2012-02-21
Classification: A61F,A61L,C08F,C08K,G02B

Abstract:
1. A dual function UV absorber of the formula: where Y=nothing or O; R=a benzotriazole or benzophenone UV absorber; R′=a benzotriazole or benzophenone UV absorber; —(CH 2 ) n H (n=1-18); —CH(CH 3 )CH 3 ; —C(CH 3 ) 3 ; —C 6 H 5 ; —CH(CH 3 )CH 2 CH 3 ; —C(CH 3 ) 2 CH 2 C(CH 3 ) 3 ; —C(CH 3 ) 2 (CH 2 ) 4 H; —C(CH 2 CH 3 ) 2 (CH 2 ) 4 H; —C(CH 3 ) 2 (CH 2 ) 5 H; —C(CH 2 CH 3 ) 2 (CH 2 ) 5 H; —C(CH 3 ) 2 (CH 2 ) 6 H; —C(CH 2 CH 3 ) 2 (CH 2 ) 6 H; —CH 2 CH(CH 2 CH 3 )(CH 2 ) 4 H; or