Attached, high reactivity rigid polyurethane foams

Details Attached, high reactivity rigid polyurethane foams Attached, high reactivity rigid polyurethane foams

C - Chemistry, Metallurgy

08

G

C08G 18/32 (2006.01) C08J 9/08 (2006.01)

Patent

CA 2558634

Polyurethane foams are made and attached to a substrate having an open cavity, but reacting prepolymer and polyol components in the presence of certain carbamate blowing agents. This process allows for very fast curing, good quality, adherent foamy to be produced on, for example, vehicle parts and assemblies, for acoustical or vibration dampening and for structural reinforcement.

Cette invention concerne des mousses de polyuréthane produites et fixées sur un substrat présentant une cavité ouverte et réagissant avec des composants prépolymère et polyol en présence de certains agents gonflants à base de carbamate. Ce processus permet de produire des mousses adhésives de bonne qualité et durcissant rapidement sur, par exemple, des pièces et des ensembles pour véhicules, ou bien utilisées à des fins d'isolation phonique et d'absorption des vibrations, ou encore pour renforcement structurel.

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