Silane functional adhesive composition and method of bonding...

C - Chemistry – Metallurgy – 09 – J

Patent

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C09J 201/10 (2006.01)

Patent

CA 2657622

The invention is an adhesive composition comprising one or more polymers having a flexible backbone and silane moieties capable of silanol condensation; one or more hydrophobic silanes having one or more hydrocarbyloxy groups and one or more hydrocarbyl groups; one or more catalysts for the reaction of silane moieties with active hydrogen containing compounds. Preferably, the adhesive composition further comprises one or more heat stabilizers and/or light stabilizers. In another embodiment, the invention is a method of bonding a window to a coated substrate, such as a window in a vehicle, which comprises applying to the window or the coated substrate an adhesive as described; contacting the window with the coated substrate wherein the adhesive is located between the window and the substrate; and allowing the adhesive to cure.

L'invention concerne une composition adhésive comprenant un ou plusieurs polymères ayant un squelette flexible et des fractions silane aptes à une condensation de silanols ; un ou plusieurs silanes hydrophobes ayant un ou plusieurs groupes hydrocarbyloxy et un ou plusieurs groupes hydrocarbyle ; un ou plusieurs catalyseurs pour la réaction de fractions silane avec des composés contenant de l'hydrogène actif. De préférence, la composition adhésive comprend en outre un ou plusieurs stabilisants vis-à-vis de la chaleur et/ou stabilisants vis-à-vis de la lumière. Dans un autre mode de réalisation, l'invention est un procédé de liaison d'une fenêtre à un substrat revêtu, telle qu'une fenêtre dans un véhicule, ledit procédé comprenant les opérations consistant à appliquer sur la fenêtre ou sur le substrat revêtu, un adhésif tel que décrit ; mettre en contact la fenêtre avec le substrat revêtu, l'adhésif étant situé entre la fenêtre et le substrat ; et amener l'adhésif à durcir.

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