abstract |
Novel ultraviolet-absorbing bisbenzotriazolylphenols represented by general formula (1), wherein A is nil, C1-C6 alkylene, -C(CH3)2-, -C(C2H5)(CH3)-, -O- or -NH-; R?1 and R3¿ are each independently hydrogen, C¿1?-C4 alkyl, aryl, C1-C4 alkoxy or halogeno; and R?2 and R4¿ are each independently hydroxyl or C¿1?-C12 linear or branched hydroxyalkyl. |