Prepolymer mixture containing silyl groups and use thereof

Details Prepolymer mixture containing silyl groups and use thereof Prepolymer mixture containing silyl groups and use thereof

C - Chemistry, Metallurgy

09

J

C09J 183/00 (2006.01)

Patent

CA 2672379

A description is given of one-component, moisture-curing adhesive/sealant compositions comprising mixtures of at least one silane-functional polyoxyalkylene prepolymer and at least one silane-functional polyolefin. These compositions may optionally further comprise non-polar plasticizers and also catalysts, fillers and adhesion promoters. Adhesive/sealant compositions of this kind feature excellent adhesion to plastics substrates and also to painted surfaces, the adhesion being retained even after storage under damp conditions.

L'invention concerne des compositions d'adhésif/d'étanchéité monocomposants, durcissant en présence d'humidité, qui contiennent des mélanges d'au moins un prépolymère de polyoxyalkylène à fonctionnalité silane et d'au moins une polyoléfine à fonctionnalité silane. Le cas échéant, ces compositions peuvent contenir en plus des plastifiants apolaires ainsi que des catalyseurs, des charges et des promoteurs d'adhésion. Ces compositions d'adhésif/d'étanchéité présentent une adhésivité excellente sur des substrats en matière plastique ainsi que sur des surfaces peintes et leur adhérence est maintenue même après stockage dans un environnement humide.

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