Patent ID: 11919985
Assignee: ZEON CORPORATION
Field: Optics (Instruments)
Classification: CPC C  G | IPC C  G

Claim 0:
1. A copolymer comprising:
a monomer unit (A) represented by formula (I), shown below,, where, in formula (I), L is an optionally substituted alkylene group and Ar is an optionally substituted aromatic ring group; and
a monomer unit (B) represented by formula (II), shown below,, where, in formula (II), R1 is an alkyl group, R2 is an alkyl group, a halogen atom, or a haloalkyl group, p is an integer of not less than 0 and not more than 5, and in a case in which more than one R2 is present, each R2 may be the same or different, wherein
the copolymer has a molecular weight distribution of 1.7 or less.