Storage stable, one package, heat curable poly urea/urethane...

Details Storage stable, one package, heat curable poly urea/urethane... Storage stable, one package, heat curable poly urea/urethane...

C - Chemistry, Metallurgy

08

G

117/113, 402/131

C08G 18/06 (2006.01) C08G 18/10 (2006.01) C08G 18/16 (2006.01) C08G 18/24 (2006.01) C08G 18/32 (2006.01) C08G 18/72 (2006.01) C08G 18/73 (2006.01) C08G 18/75 (2006.01) C08G 18/76 (2006.01)

Patent

CA 1232096

ABSTRACT OF THE DISCLOSURE New and improved storage stable, one package, heat- curable poly urea/urethane coating compositions are disclosed which comprise; (a) a mixture or prepolymer of (i) a poly aliphatic isocyanate compound of the for- mula: Image wherein R and R' are each, independantly, hydrogen, alkyl or substituted alkyl and X is a bridging means selected from divalent aliphatic, cycloaliphatic, or aromatic groups, or a polymeric adduct of said aliphatic isocyanate, said polymeric adduct pos- essing polyaliphatic isocyanate functionality; and (ii) at least one monomeric or polymeric compound containing a plurality of isocyanate-reactive hydrogens, chosen from an amino alcohol or a polyglycol amine, wherein the molar ratio of the total isocyanate groups in (i) to the total reactive hydrogens in (ii) is from about 1:0.8 to about 1:1.2, respectively; and (b) a minor effective amount of a polymerization catalyst.

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