Thermosetting composition from cyanourea compound

Details Thermosetting composition from cyanourea compound Thermosetting composition from cyanourea compound

1981-12-18

1984-08-14

Anderson, Harold D.

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

Synthetic resins

From reactant having a nitrogen atom directly bonded to the...

528 68, 564103, C08G 7110

Patent

active

044658257

ABSTRACT:
This invention is directed to processes for forming either solid, linear polymers or thermoset polymers from novel N-cyanourea compounds of the formula: ##STR1## wherein n is at least 2 and R is the organic moiety of a polyisocyanate remaining after reacting the NCO groups of the polyisocyanate with cyanamide, preferably under atmospheric conditions. These N-cyanourea compounds are polymerized to solid, linear polymers useful as an epoxy curing agent, by agitation for about 50 hours under atmospheric conditions or to a thermoset polymer useful per se as an adhesive or sealant by heating at a temperature above 90.degree. C.

REFERENCES:
patent: 4379728 (1983-04-01), Lin

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