Hydrogenated ring-opening polymer and process for producing same
US5106920A · kind A · utility
8Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1990 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Nov 21, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a hydrogenated polycyclic norbornene ring-opening polymer which is excellent in heat resistance, optical characteristics and processability which comprises recurring units represented by the following formula [I] and [II] or these recurring units substituted with alkyl in an amount of at least 10 mol % based on total polymer units and has an intrinsic viscosity [.eta.] of 0.01-20 dl/g measured in toluene at 25.degree. C., with at least 50% of C--C bonds which constitute main chain being single bonds: ##STR1## wherein --denotes a double bond or a single bond.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.