A compound represented by the following formula 1: ##STR1## wherein R.sub.1 is an unsubstituted or substituted benzyl group or unsubstituted or substituted phenyl group, method for producing a copolymer comprising copolymerizing a monomer mixture containing the compound, copolymer for lenses containing a copolymerized component represented by the following formula 2 ##STR2## and a lens consisting of the copolymer. The compound of the formula 1 is a reactive dye exhibiting excellent hydrolysis resistance, good copolymerizability with other comonomers, excellent dyeing property and proper solubility in comonomers.
以下是该段话的中文翻译:
化合物的
化学式为1:##STR1## 其中R.sub.1是未取代或取代苯甲基基团或未取代或取代苯基团,制备一种共聚物的方法,包括共聚合含有该化合物的单体混合物,共聚物适用于镜片,含有由以下
化学式2表示的共聚组分 ##STR2## 和由该共聚物制成的镜片。化合物1的反应
染料表现出优异的
水解抗性,良好的与其他共聚单体的共聚性,出色的染色性和适当的共聚单体中的溶解度。