Mixed cellulose ester films having +C plate and −A plate optical properties
US8349921B2 · kind B2 · utility
2Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2009 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Feb 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L67/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to films made from mixed cellulose esters having low hydroxyl content and certain plasticizers. These films can exhibit +C plate, −A plate, and biaxial Nz behavior, which make them particularly suitable for use in optical applications, such as in liquid crystal displays (LCD) as protective and compensator films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.