Cellulose ester film, polarizing plate, and liquid crystal display device
US10338290B2 · kind B2 · utility
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1References
21Claims
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Key dates
| Filing date | Aug 31, 2016 |
| Grant date | Jul 2, 2019 |
| Priority date | — |
| Expiry date | Oct 19, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133562
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cellulose ester film contains a compound having a structural unit denoted by —NR—(C═O)— in which R represents a hydrogen atom or a substituent, a surface having knoop hardness of greater than or equal to 210 N/mm2 is provided, and loss tangent tan δ at 25° C. is greater than or equal to 0.03.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.