Storage stable, humidity curing adhesives

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 4/00 (2006.01) C07D 295/092 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08G 18/20 (2006.01) C08L 75/04 (2006.01) C09D 175/04 (2006.01) C09J 11/06 (2006.01) C09J 175/00 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2207476

A morpholine group comprising catalyst of the general formula, (see fig. I) wherein n + m is > 1 and R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 and R14 are independently from each other hydrogen or an alkyl group, particularly a methyl or an ethyl group, is described. Said catalyst is particularly suitable for the use in storage stable polyurethane (PU)-compositions usable as adhesives, sealings, coatings or pretreatments with a primer. Said PU compositions have a delayed skinning time and thus an extended assembly time but nevertheless a fast development of strength, and they are suitable for the application on metal, glass, ceramics, wood, cementitious substratums and plastic substratums.

Un groupe de morphélines comprenant un catalyseur dont la formule générale (image) où n + m est > 1 et R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13 et R14 sont indépendants les uns des autres du groupe d'hydrogène ou d'alkyle, particulièrement du groupe de méthyle ou d'éthyle. Ce catalyseur est particulièrement utile pour les compositions stables de polyuréthanes (PU) qui peuvent être utilisées en tant qu'adhésifs, scellants, recouvrements ou pré-traitement avec un apprêt. Ces compositions de PU ont une période d'abrasion plus longue et, par conséquent, une période d'assemblage plus étendue. Elles deviennent toutefois solides rapidement et peuvent être utilisées sur du métal, du verre, de la céramique, du bois, des supports à base de ciment et des supports à base de plastique.

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