Anionic copolymerization of 2-pyrrolidone with C.sub.7 -C.sub.12

Details Anionic copolymerization of 2-pyrrolidone with C.sub.7 -C.sub.12 Anionic copolymerization of 2-pyrrolidone with C.sub.7 -C.sub.12

1977-03-02

1978-08-15

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

252428, 252431C, 252431N, 252437, 2603265A, 528313, 528315, 528318, 528325, 528326, C08G 6924

Patent

active

041071549

ABSTRACT:
Copolymers of 2-pyrrolidone and C.sub.7 -C.sub.12 lactams are provided in solid form, at relatively high rates and molecular weights by polymerization in the presence of alkaline catalysts and carbon dioxide, by the inclusion of an auxiliary catalyst and a copolymerization promoter comprising certain onium salts and N-acyl lactams, respectively.

REFERENCES:
patent: 2638463 (1953-05-01), Ney et al.
patent: 3346566 (1967-10-01), Chiddix et al.
patent: 3681294 (1972-08-01), Jarovitzky
patent: 3681295 (1972-08-01), Jarovitzky
patent: 3721652 (1973-03-01), Barnes
patent: 3793258 (1974-02-01), Reinking et al.
patent: 3835100 (1974-09-01), Sekiquchi et al.
patent: 3875121 (1975-04-01), Brassat et al.
patent: 3919175 (1975-11-01), Kralicek et al.

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