Process and compositions for production of moldings
US4963640A · kind A · utility
7Cited by
25References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 13, 1989 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Feb 13, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2120/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a novel chain extender for use in making moldings. The chain extender broadly comprises the reaction product of an aromatic diamine and a cyclic carboxylic acid dianhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.