Patent ID: 11899364
Assignee: FUJIFILM ELECTRONIC MATERIALS U.S.A., INC.
Field: Optics (Instruments)
Classification: CPC G  B  C  H | IPC B  C  G  H

Claim 8:
9. The dry film structure of claim 1, wherein the at least one fully imidized polyimide polymer is prepared from at least one dianhydride, the at least one dianhydride comprising a compound selected from the group consisting of 3,3′,4,4′-benzophenone tetracarboxylic dianhydride, 3, 3′, 4, 4′-diphenyl sulfone tetracarboxylic dianhydride, 3, 3 ‘,4,4’-diphenyl ether tetracarboxylic dianhydride, 2,3,3‘,4’-diphenyl ether tetracarboxylic dianhydride, and 2,2-[bis(3, 4-dicarboxyphenyl)] hexafluoropropane dianhydride.