Norbornene derivative, norbornene polymer produced by ring-opening (co)polymerization, and process for producing the polymer by ring-opening (co)polymerization
US7759437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2009 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Apr 1, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/97
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The norbornene derivative of the present invention is represented by the following formula (Im).According to the present invention, a novel norbornene derivative that is useful as a precursor monomer for preparing a cycloolefin polymer exhibiting excellent transparency, heat resistance and low-water absorption properties and having been freely controlled in the birefringence properties and the wavelength dispersion properties can be provided. According to the present invention, further, a norbornene ring-opened (co)polymer having excellent transparency and heat resistance, exhibiting high solubility in organic solvents and having specific birefringence properties and wavelength dependence, and a process for preparing the ring-opened (co)polymer can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.