Catalyst for polymerization of 2-pyrrolidone

Details Catalyst for polymerization of 2-pyrrolidone Catalyst for polymerization of 2-pyrrolidone

1977-05-06

1978-11-14

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, 528326, C08G 6924

Patent

active

041255232

ABSTRACT:
In an improved process for making catalyst for the alkaline-catalyzed polymerization of 2-pyrrolidone, potassium metal is contacted with a 5-7 membered-ring lactam and the product, potassium lactamate, is substantially isolated. The potassium lactamate so-derived finds use as a catalyst in the polymerization of 2-pyrrolidone or may be contacted with carbon dioxide to form an isolatable adduct which is used as an activator in the polymerization of 2-pyrrolidone.

REFERENCES:
patent: 2638463 (1953-05-01), Ney et al.
patent: 2854458 (1958-09-01), Reppe et al.
patent: 3346566 (1967-10-01), Chiddix et al.
patent: 3647764 (1972-03-01), Sargent
patent: 3696075 (1972-10-01), Matzner et al.
patent: 3700656 (1972-10-01), Masaki et al.
patent: 3721652 (1973-03-01), Barnes
patent: 3842047 (1974-10-01), Pusztaszeri
patent: 3865814 (1975-02-01), Lussi et al.

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