Catalyst for the polymerization of 2-pyrrolidone from alkali met

Details Catalyst for the polymerization of 2-pyrrolidone from alkali met Catalyst for the polymerization of 2-pyrrolidone from alkali met

1977-05-06

1979-03-20

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

252431C, 252431N, 2603265FL, 2603265FN, 528313, 528326, C08G 6924

Patent

active

041455193

ABSTRACT:
The process of making catalyst for the alkaline catalyzed polymerization of 2-pyrrolidone, in which an alkali metal is contacted with a 5-7 membered-ring lactam and the product alkali metal lactamate is obtained by distillation in the residuum containing about 50-95% of the total lactam. The alkali metal lactamate so obtained is used as a catalyst in the polymerization of 2-pyrrolidone, or may be contacted with carbon dioxide to form an adduct which finds use as an activator in the polymerization of 2-pyrrolidone.

REFERENCES:
patent: 2854458 (1958-09-01), Reppe et al.
patent: 3346566 (1967-10-01), Chiddix et al.
patent: 3700656 (1972-10-01), Masaki et al.
patent: 3842047 (1974-10-01), Pusztaszeri
patent: 3865814 (1975-02-01), Lussi et al.

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