申请人:JNC Petrochemical Corporation
公开号:US20140225047A1
公开(公告)日:2014-08-14
To provide a photosensitive polymer, a phase difference film using the photosensitive polymer, and an optical film using the phase difference film. A solution is a photosensitive polymer having a constitutional unit represented by formula (1):
wherein, in formula (1), for example, R
1
is hydrogen or methyl; a is 2 or 3; p is an integer from 1 to 12; X
1
is —O—, —COO— or —OCO—; b is an integer from 0 to 3; A
1
is a divalent group selected from 1,4-phenylene or naphthalene-2,6-diyl, and in the divalent group, at least one of hydrogen may be replaced by fluorine or chlorine; Z
1
is a single bond, —COO—, —CH═CH—COO—, —CH
2
CH
2
—COO—, —CH
2
O— or —CONH—; W
1
and W
2
are hydrogen, fluorine or 1-5C alkyl or alkoxy; Y
1
is —O—; and R
2
is 1-20C alkyl, and at least one of —CH
2
— in the alkyl may be replaced by —O—.