Moisture-setting polyurethane adhesive

Details Moisture-setting polyurethane adhesive Moisture-setting polyurethane adhesive

C - Chemistry, Metallurgy

09

J

C09J 175/04 (2006.01) B32B 7/12 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C09J 175/06 (2006.01) D06M 15/564 (2006.01) D06M 17/10 (2006.01)

Patent

CA 2315154

The invention concerns a moisture-setting polyurethane adhesive comprising: (a) 70 to 95 wt. % of a polyurethane prepolymer obtained by polyaddition of at least one polyol with at least one polyisocyanate; (b) 5 to 30 wt. % of a substantially amorphous polyalphaolefin. Said adhesive is used for bonding by spread coating a textile and laminating a cellular material such as a foam. The invention also concerns the resulting bonded assemblies.

L'invention se rapporte à un adhésif polyuréthane réticulable par l'humidité qui comprend: a) 70 à 95 % en poids d'un prépolymère polyuréthane obtenu par polyaddition d'au moins un polyol avec au moins un polyisocyanate, b) 5 à 30 % en poids d'une polyalphaoléfine essentiellement amorphe, la teneur en groupes NCO libres représentant 1 à 20 % en poids de l'adhésif. L'adhésif selon l'invention est utilisé pour le collage opérant par enduction d'un textile et contre-collage d'un matériau cellulaire tel qu'une mousse. L'invention concerne aussi les assemblages collés ainsi obtenus.

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