K-type polarizer and preparation thereof
US7087194B2 · kind B2 · utility
3Cited by
48References
39Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2002 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Feb 15, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for preparing a polarizer is described whereby a pre-polarizing article comprising an oriented, vinylalcohol polymer film layer, and an acid donor layer comprising a thermal acid generator, is exposed to radiant energy at a temperature sufficient to effect a partial dehydration of the vinylalcohol polymer to a vinylalcohol/poly(acetylene) copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.