Polyurethane sealant compositions having primerless to paint...

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 175/04 (2006.01) C07F 7/08 (2006.01) C07F 7/10 (2006.01) C07F 7/18 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01) C08G 18/80 (2006.01)

Patent

CA 2608744

In one aspect, this invention is a composition comprising a urethane prepolymer having isocyanate moieties; a catalytic amount of a compound which catalyzes the reaction of isocyanate moieties with water or an active hydrogen containing compound; alpha hydrocarbyl silane compound; and a catalytic amount of a compound which catalyzes silanol condensation. The composition of the invention can be used to bond a window into a structure without the need to prime the window or the window flange of the structure.

Dans un mode de réalisation, l'invention concerne une composition contenant un prépolymère d'uréthane présentant des groupes fonctionnels isocyanates ; une quantité catalytique d'un composé catalysant la réaction des groupes fonctionnels isocyanates avec de l'eau ou un composé contenant de l'hydrogène actif ; un composé d'alpha hydrocarbyl silane ; et, une quantité catalytique d'un composé catalysant la condensation de silanol. La composition selon l'invention peut être employée pour fixer une fenêtre dans une structure sans devoir appliquer un primaire sur la fenêtre ou le rebord de fenêtre de la structure.

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