Process for the preparation of polyamide compounds by the reacti

Details Process for the preparation of polyamide compounds by the reacti Process for the preparation of polyamide compounds by the reacti

1982-02-23

1983-07-26

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 52, 528 57, C08G 1834

Patent

active

043955312

ABSTRACT:
Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.

REFERENCES:
patent: 4061622 (1977-12-01), Onder
patent: 4094866 (1978-06-01), Onder
patent: 4156065 (1979-05-01), Onder et al.
Jl. of Applied Polymer Science, vol. IV No. 11 (1960), pp. 207-211 "Catalysis of the Isocyanate-Hydroxyl Reaction" by J. W. Britain et al.
"Polyurethanes-Chemistry and Technology" Part I Chemistry by J. H. Saunders, Interscience, pp. 228-232.

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