Catalyst solution for implementing anionic lactam polymerization, method for production thereof and polyamide moulding compound
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United States of America Patent
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Nov 14, 2006
Grant Date -
Apr 28, 2005
app pub date -
Sep 9, 2004
filing date -
Sep 10, 2003
priority date (Note) -
Expired
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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 I ##STR00001## In this formula (I), R.sub.1 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 R.sub.2, which is the same or different, is H, halogen, C.sub.1 C.sub.5-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.
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