Anionic polymerization of lactam with azetidine-2,4-dione promot

Details Anionic polymerization of lactam with azetidine-2,4-dione promot Anionic polymerization of lactam with azetidine-2,4-dione promot

1984-03-19

1985-05-21

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528315, 528316, 528323, C08G 6920

Patent

active

045187657

ABSTRACT:
An improved process for the anionic polymerization of lactams is described. Particular azetidinedione compounds are employed as promoters and their use not only permits low polymerization temperatures but gives rise to faster polymerization reactions than prior art procedures allow.
The rapid polymerization of caprolactam in accordance with the present invention makes the process particularly suited to RIM procedures for preparing molded polyamides.

REFERENCES:
patent: 3016366 (1962-01-01), Glickman et al.
patent: 3234152 (1966-02-01), Fuller
patent: 3671500 (1972-06-01), Johnson

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