Method to adhere an expandable flexible polyurethane to a...

Details Method to adhere an expandable flexible polyurethane to a... Method to adhere an expandable flexible polyurethane to a...

C - Chemistry, Metallurgy

08

J

C08J 9/04 (2006.01) C08G 18/10 (2006.01) C08J 9/06 (2006.01) C08J 9/10 (2006.01) C08K 5/23 (2006.01)

Patent

CA 2558885

Foam-in-place, one component polyurethane compositions are useful to produce foams that adhere to various substrates such as certain vehicle parts and assemblies. The polyurethane composition contains a heat-activated blowing agent. The composition is based on a polyurethane resin that is expandable. The resin is a heat-softenable material, or a low molecular weight material that engages in further curing during the heat expansion step.

L'invention concerne des compositions de polyuréthanne de moussage in situ à un seul composant, utiles pour produire des mousses qui adhèrent à divers substrats tels que certaines pièces et ensembles de véhicule. La composition de polyuréthanne contient un agent de soufflage activé par la chaleur. Cette composition comprend comme base une résine de polyuréthanne expansible. La résine est une matière pouvant être amollie par la chaleur, ou une matière de faible masse moléculaire qui se polymérise davantage pendant l'étape d'expansion thermique.

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