Process for the manufacture of polyamides utilizing a mixture of an oxygenated phosphorus compound and a molybdenum compound as catalyst
US4542205A · kind A · utility
7Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1984 |
| Grant date | Sep 17, 1985 |
| Priority date | — |
| Expiry date | Sep 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The process for manufacturing a nylon-type polyamide from a dinitrile, a diamine, water and a catalyst is improved by using as a catalyst an oxygenated phosphorus compound and a molybdate compound. For example, high quality nylon-6,6 is manufactured by contacting adiponitrile, hexamethylene diamine, water with disodium phosphite and sodium molybdate at an elevated temperature and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.