Process for the preparation of polyamide from omega-aminonitrile utilizing an oxygenated sulfur compound as catalyst
US4629776A · kind A · utility
12Cited by
1References
16Claims
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Key dates
| Filing date | Dec 16, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Dec 16, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalytic process for the production of high molecular weight nylon-type polyamides from omega-aminonitriles has been discovered. The process comprises contacting an omega-aminonitrile, water and a catalytic amount of an oxygenated sulfur compound catalyst. In one embodiment, sulfuric acid is utilized to polymerize 6-aminocapronitrile to nylon-6, at an elevated temperature and pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.