abstract |
Suitable benzotriazole ultraviolet absorbers represented by the following general formula (I) provide excellent light stabilizing protective effects on recording materials as well as electrical / base layer / clear layer finishes:n n n n n n n n In this formula,n n n R 1 is hydrogen or chlorine, R 2 is alkyl or -CH 2 CH 2 COOR 4 , R 4 is hydrogen or alkyl,n n n R 3 is - It's cum. |