CYCLIC OLEFIN ADDITION COPOLYMER AND PROCESS FOR PRODUCING SAME, CROSSLINKING COMPOSITION, CROSSLINKED PRODUCT AND PROCESS FOR PRODUCING SAME, AND OPTICALLY TRANSPARENT MATERIAL AND APPLICATION THEREOF
US6844403B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2002 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Nov 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2345/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a cyclic olefin addition copolymer which has a reactive silyl group having a specific structure, excels in optical transparency, heat resistance, and adhesion, and is capable of producing a crosslinked product having improved dimensional stability, solvent resistance, and chemical resistance. The present invention also provides a process for producing the cyclic olefin addition copolymer, a crosslinking composition, a crosslinked product and a process for producing the same, and an optically transparent material (transparent resin film) comprising the cyclic olefin addition copolymer. The optically transparent material excels in optical transparency and heat resistance, exhibits improved dimensional stability, adhesion, solvent resistance, and chemical resistance, and is capable of improving fragility and preventing occurrence of cracks in the film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.