Polymer film, and phase difference film, polarizing plate and liquid crystal display device using the same
US9512295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2008 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Sep 27, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided a polymer film including a polymer; and a high molecular weight plasticizer that has a number average molecular weight of 700 to 10,000 and has a repeating unit derived from a dicarboxylic acid and a diol, wherein the dicarboxylic acid for forming the high molecular weight plasticizer includes at least one aliphatic dicarboxylic acid having 2 to 20 carbon atoms and at least one aromatic dicarboxylic acid having 8 to 20 carbon atoms, and the diol includes at least one diol selected from the group consisting of an aliphatic diol having 2 to 12 carbon atoms, an alkyl ether diol having 4 to 20 carbon atoms and an aromatic ring-containing diol having 6 to 20 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.