Ultraviolet absorber UV-284 (2-hydroxy-4-methoxy diphenyl ketone 5 sulfonic acid)is obtained by synthesis from 2-hydroxy -4-methoxy diphenyl ketone,and its yellowing-resistant property on silks is investigated.

• 以2-羟基-4-甲氧基二苯甲酮为原料,合成了2-羟基-4-甲氧基二苯酮5-磺酸,即紫外线吸收剂uv-284。