Polymeric colorant and colored material for ocular lens using the colorant

Abstract

A polymeric colorant represented by the following formula: A1—N═N—A2—O—(CH2)n—X wherein, A1 represents an aryl group which may have a substituent group, A2 represents an arylene group which may have a substituent group, X represents one of an acryloyloxy group, a methacryloyloxy group, a vinylphenyl group, a vinylphenyloxy group, and a vinylphenylalkyloxy group whose alkyl portion has 1-5 carbon atoms, and n is an integer of 1-5, and a colored material for an ocular lens which uses the polymeric colorant is also disclosed.

Dependencies are inferred from the claim text.