Urea-modified isocyanates

Details Urea-modified isocyanates Urea-modified isocyanates

1988-08-19

1989-12-05

Welsh, Maurice J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

2521822, C08L 7500

Patent

active

048853488

ABSTRACT:
A dispersion in an aromatic polyisocyanate of a reaction product of the polyisocyanate and an amine having the formula: ##STR1## wherein Q represents hydrogen or hydrocarbyl and R represents a hydrocarbyl radical selected from radicals of the formulae: ##STR2## or wherein R and Q together with the attached nitrogen atom form a piperidine, morpholine or pyrolidine ring bearing a hydrocarbyl radical on at least one of the carbon atoms adjacent to the nitrogen atom.

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patent: 3632668 (1972-01-01), Kinney
patent: 3634273 (1972-01-01), Marsh et al.
patent: 4036797 (1977-07-01), Meader
patent: 4264519 (1981-04-01), Hennig et al.
patent: 4495229 (1985-01-01), Wolf et al.
patent: 4572100 (1987-06-01), Schonbackler et al.
patent: 4576979 (1986-03-01), Schupp et al.
patent: 4608416 (1986-08-01), Schupp et al.
patent: 4786704 (1988-11-01), Hughes et al.

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