Process for the production of synthetic resins containing isocya

Details Process for the production of synthetic resins containing isocya Process for the production of synthetic resins containing isocya

1980-06-19

1981-10-06

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...

C08G 1876

Patent

active

RE0307602

ABSTRACT:
The instant invention is directed to a process for the production of heat-resistant synthetic resins containing isocyanurate groups by the polymerization of organic polyisocyanates in the presence of catalysts which accelerate the trimerization of isocyanate groups, wherein said polyisocyanate component is a mixture of isomers and/or homologs of polyisocyanates of the diphenylmethane series containing more than 20%, by weight, of 2,4'-diisocyanatodiphenylmethane.

REFERENCES:
patent: 3362979 (1968-01-01), Bentley
patent: 3644232 (1972-02-01), Bernard et al.
patent: 3711444 (1973-01-01), Allen et al.

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