C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
18/1103, 402/142
C08G 18/00 (2006.01) C03C 25/32 (2006.01) C08G 18/08 (2006.01) C08G 18/16 (2006.01) C08G 18/26 (2006.01) C08G 18/28 (2006.01) C08G 18/32 (2006.01) C08G 18/77 (2006.01) C08G 18/78 (2006.01) C08G 18/79 (2006.01)
Patent
CA 1263989
ABSTRACT OF THE DISCLOSURE 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 food 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.
507610
Fetherstonhaugh & Co.
Linamar Machine Limited
Smith Stuart B.
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