Polyurethane coating composition

Details Polyurethane coating composition Polyurethane coating composition

1986-09-08

1987-12-01

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...

4273855, 4273882, 4284231, 4284258, 528 73, 528 76, 528 77, C08G 1812

Patent

active

047105607

ABSTRACT:
This invention relates to a moisture curable, isocyanate terminated, branched prepolymer which is the reaction product of (a) an alcohol having two or three --OH groups, (b) a hydrophobic polymeric diol or triol and (c) at least one polyisocyanate, said prepolymer having an NCO content in the range 0.3 to 1.0 meq/q. Exposure of the prepolymer as a coating on a substrate to moisture under atmospheric conditions results in a cured coating having excellent adhesion to the substrate and excellent abrasion resistance.

REFERENCES:
patent: 3422054 (1969-01-01), Kelly
patent: 3919173 (1975-11-01), Coyner et al.
patent: 3933725 (1976-01-01), Dearlove et al.
patent: 4145515 (1979-03-01), Pogozelski et al.

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