One-package heat curable polyurethane composition

Details One-package heat curable polyurethane composition One-package heat curable polyurethane composition

C - Chemistry, Metallurgy

08

G

18/1216, 402/143

C08G 18/10 (2006.01) C08G 18/76 (2006.01) C08L 75/04 (2006.01) C09J 175/04 (2006.01)

Patent

CA 1190994

ABSTRACT OF THE DISCLOSURE A one-package heat curable polyurethane composition, comprising an isocyanate terminated prepolymer liquid phase and a separate solid polyhydroxy compound phase insoluble in the prepolymer phase, and suitable for use as an adhesive. The liquid prepolymer phase comprises the reaction product of an aromatic polyisocyanate and a polyhydroxy compound. The separate insoluble solid polyhydroxy compound phase is dispersed or suspended throughout the liquid prepolymer phase and remains separate until heat cured. The ratio of OH groups in the solid polyhydroxy compound phase to NCO groups in the isocyanate terminated prepolymer liquid phase is less than 2:1. The one-package polyurethane adhesive composition can also be useful as an in-mold coating and an injection molding compound.

415446

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