Patent ID: 11970592
Assignee: SK INNOVATION CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC C | IPC C

Claim 13:
14. The window cover film of claim 1, wherein the aromatic dianhydride is selected from one or a mixture of two or more of 4,4′-hexafluoroisopropylidene diphthalic anhydride (6FDA), biphenyltetracarboxylic dianhydride (BPDA), oxydiphthalic dianhydride (ODPA), sulfonyl diphthalic anhydride (SO2DPA), (isopropylidenediphenoxy) bis(phthalic anhydride) (6HDBA), 4-(2,5-dioxotetrahydrofuran-3-yl)-1,2,3,4-tetrahydronaphthalene-1,2-dicarboxylic dianhydride (TDA), 1,2,4,5-benzene tetracarboxylic dianhydride (PMDA), benzophenone tetracarboxylic dianhydride (B TDA), bis(carboxyphenyl) dimethyl silane dianhydride (SiDA), and/or bis(dicarboxyphenoxy) diphenyl sulfide dianhydride (BDSDA).