Preparation of polyamide from dinitrile, diamine and water with P catalyst
US4520190A · kind A · utility
8Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Sep 19, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyamides suitable for fiber spinning are produced by contacting a diamine, a dinitrile and water in a process wherein the diamine is added gradually to the dinitrile over the course of polymerization in the presence of an oxygenated phosphorus compound catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.