Melt preparation of 6TA/6IA polymers with phosphorus compound to

Details Melt preparation of 6TA/6IA polymers with phosphorus compound to Melt preparation of 6TA/6IA polymers with phosphorus compound to

1977-01-14

1978-09-12

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528338, 528339, 528324, 528336, C08G 6928

Patent

active

041137086

ABSTRACT:
An improvement in the process for preparing random copolyamides by the melt polymerization of a mixture of hexamethylenediammonium terephthalate and hexamethylenediammonium isophthalate is described. The improvement comprises accomplishing the melt polymerization in the presence of a small amount of a certain phosphorus compound, such as benzene phosphinic acid, whereby ammonia formation during polymerization is reduced.

REFERENCES:
patent: 3365428 (1968-01-01), Wujciak
patent: 3825508 (1974-07-01), Ashida et al.
patent: 3941755 (1976-03-01), Chapman et al.
Organophosphorus Monomers & Polymers - E. L. Gefter, 1962, pp. X-XIII.

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