Polymeric colorant and colored material for ocular lens using the colorant
AssigneeMenicon Co., Ltd.
InventorsAkira Tsuzuki, Kazuharu Niwa, Tatsuya Ojio
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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 to the polymeric colorant is also disclosed.
Claims2
A colored material for an ocular lens which is formed of a polymer obtained by copolymerizing at least one polymeric unsaturated monomer for said ocular lens and a polymeric colorant which is 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.
Dependencies are inferred from the claim text.