Aliphatic polyurethane sprayable coating compositions and method

Details Aliphatic polyurethane sprayable coating compositions and method Aliphatic polyurethane sprayable coating compositions and method

1985-04-26

1986-10-07

Cockeram, Herbert S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521161, 521162, 528 49, 528 55, 528 59, 528 73, 523214, 523222, 524494, 427133, C08G 1814, C08G 1877, C08G 1830

Patent

active

046160434

ABSTRACT:
A light stable, fast reacting, aliphatic polyurethane sprayable coating composition and injectable open molding material is prepared by reacting an A side composition comprising a trimerized or biuret polymethylene polyisocyanate prepolymer with a B side composition comprising an admixture of an alkoxy polyalkylene glycol, such as methoxypolyethylene glycol and an aromatic polyamine such as a diethyl toluene diamine to provide a polyurethane reaction product which rapidly gels, may be quickly removed from the mold, has good green strength and high temperature resistance and is characterized by good ultraviolet or light stability properties. Optionally, the B side composition may contain a catalytic amount of a metal carboxylate like lead napthenate. The A and B side compositions may be sprayed onto a mat in an open mold and also may be sprayed in conjunction with chopped glass fibers, to form a glass-fiber spray coating.

REFERENCES:
patent: 4218543 (1980-08-01), Weber et al.
patent: 4267299 (1981-05-01), Oechsle
patent: 4381352 (1983-04-01), McBrayer
patent: 4381388 (1983-04-01), Naples
patent: 4495081 (1985-01-01), Vanderhider et al.
patent: 4560494 (1985-12-01), Druetzler

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