Anionic polymerization of lactam with alkaline earth metal compo

Details Anionic polymerization of lactam with alkaline earth metal compo Anionic polymerization of lactam with alkaline earth metal compo

1985-06-07

1986-09-30

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528312, 528315, 528323, 528326, C08G 6920

Patent

active

046147926

ABSTRACT:
Process for preparing polyamide by anionically polymerizing lactam in the presence of an alkaline metal catalyst, an activator and at least one low molecular weight ester compound. The polymerization process is rapid and yields polyamides having good impact strengths. The process significantly reduces moulding time in reaction injection moulding.

REFERENCES:
patent: 2809958 (1957-10-01), Barnes et al.
patent: 3042659 (1962-07-01), Follett
patent: 3214415 (1965-10-01), Giberson
patent: 3316221 (1967-04-01), Hyde
patent: 3397185 (1968-08-01), Tetenbaum
patent: 3898198 (1975-08-01), McGrath
Mattiussi et al., Anionic Polymerication of Caprolactam Organic Esters as Initiators, European Polymer Journal 1968, vol. 4, pp. 695-707.

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