Modified polyurethane adhesive compositions and process for...

Details Modified polyurethane adhesive compositions and process for... Modified polyurethane adhesive compositions and process for...

C - Chemistry, Metallurgy

08

L

402/125, 400/740

C08L 75/04 (2006.01) B32B 7/08 (2006.01) B32B 27/08 (2006.01) C09J 175/04 (2006.01)

Patent

CA 1157988

ABSTRACT OF THE DISCLOSURE A modified polyurethane adhesive composition characterized by its improved viscosity and high initial bond strength contains an iso- cyanate-terminated prepolymer or a fully reacted polyurethane and a monomeric carbamate-ester which is compatible and not reactive with the prepolymer or polyurethane. The resultant adhesive is suitable for laminating many types of substrates. In a preferred embodiment the prepolymer is employed with the carbamate ester in a reactive hot-melt adhesive for use in bonding flexible substrates.

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