Catalyst solution for implementing anionic lactam polymerization, method for production thereof and polyamide moulding compound
US7135428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2004 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Sep 9, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/823
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst solution for the anionic polymerization of lactones and/or lactams comprises a salt of at least one compound of the general formula IIn this formula (I), R1 is H or an aliphatic, cycloaliphatic or aromatic radical with 1 to 12 C atoms which can also have heteroatoms or hetero groups, the radical R2, which is the same or different, is H, halogen, C1–C5-alkyl, ethoxy or wherein said solvation agent S comprises N-methylpyrrolidone, N-octylpyrrolidone, N-cyclohexylpyrrolidone, N-octylcaprolactam, tetrabutyl urea or mixtures thereof methoxy, and n=1, 2 or 3, and wherein the salt is dissolved in an aprotic solvation agent S.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.