Catalyst solution for implementing anionic lactam...

Details Catalyst solution for implementing anionic lactam... Catalyst solution for implementing anionic lactam...

2006-11-14

2006-11-14

Lorengo, J. A. (Department: 1755)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S171000

Reexamination Certificate

active

07135428

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), R1is 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.

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Basf Intermediates—The Right Partner For Progressive Chemistry Worldwide; BASF Intermediates; 12.2 Harnstoffe Ureas; pp. 162-163.

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