Regioselectively substituted cellulose ester based C+ compensation films with improved wavelength dispersion
US12252603B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Feb 10, 2021 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Mar 13, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13363
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present application discloses films comprising regioselectively substituted cellulose esters and a component A wherein rings A, B, C, R1, R2, R5, R6, R8, m, n, and k are defined herein. The films are C+ films that exhibit improved wavelength dispersion. <
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