Moisture-curable, hot melt composition

Details Moisture-curable, hot melt composition Moisture-curable, hot melt composition

C - Chemistry, Metallurgy

08

G

C08G 18/62 (2006.01) C08G 18/12 (2006.01) C08G 18/40 (2006.01) C09J 175/04 (2006.01)

Patent

CA 2219743

A moisture-curable, hot melt composition comprising a graft polyurethane prepolymer made by reacting a macromonomer, polyol, polyisocyanate and optional silane reagent is provided. The composition advantageously provides adhesives having initial creep resistance, short set times, and long open times.

Une composition thermofusible durcissant sous l'action de l'humidité comprend un prépolymère de polyuréthane greffé, préparé en faisant réagir un macromonomère, un polyol et un polyisocyanate, ainsi qu'éventuellement un réactif de type silane. La composition fournit, d'une manière avantageuse, des adhésifs ayant une bonne résistance initiale au fluage, des temps de durcissement courts et des durées de conservation de l'adhésivité élevées.

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