Amide-urea copolymer and process for the preparation thereof
US5089600A · kind A · utility
1Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1989 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Aug 16, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolymers comprising amide units and urea units are prepared by melt phase interchange of diaryl esters of dicarboxylic acids with diamines and diesters of carbonic acid with diamines. The products are tough resins, useful per se as molding compounds, or in blends with other thermoplastic polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.