Optical device containing polymeric material domains having different degrees of randomness
US6627300B1 · kind B1 · utility
8Cited by
62References
46Claims
0Family size
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Key dates
| Filing date | Oct 11, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Mar 14, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An improved optical film having a continuous/disperse phase morphology and a method for making the same is provided. At least one of the continuous and disperse phases comprises a blend of homopolymers which are inter-reacted, as by transesterification. The resulting films exhibit a higher degree of birefringence for a given level of strain than analogous films in which the blend is replaced by a random copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.