Process for the manufacture of polyamides from diamine and diamide utilizing carboxamide as catalyst
US4734487A · kind A · utility
5Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1985 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Dec 16, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Nylon-type polyamides are produced from a diamine and a diamide in contact with a catalyst comprising a carboxamide. For example, high quality nylon-6,6 is manufactured by contacting hexamethylenediamine and adipamide in water with a carboxamide, at an elevated temperature and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.