Process for reducing caprolactam and its oligomers in nylon-6 pre-polymer
US6875838B2 · kind B2 · utility
1Cited by
8References
5Claims
0Family size
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Key dates
| Filing date | Apr 28, 2003 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Jul 29, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is a process for reducing low molecular weight impurities, namely caprolactam and its oligomers, from Nylon-6 pre-polymer during the preparation of Nylon-6 polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.