Rapid-foaming foam for prefabricated system building

Details Rapid-foaming foam for prefabricated system building Rapid-foaming foam for prefabricated system building

C - Chemistry, Metallurgy

08

G

C08G 18/16 (2006.01) C08G 18/09 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2242672

The invention concerns a two-component system for producing polyurethane foams, the system comprising a polyol component A with at least one polyol having a functionality of two or more, water and a catalyst system comprising at least two catalysts, of which at least one can catalyze the reaction of the polyisocyanate with the polyol and/or water and at least one further catalyst can catalyze the trimerization of isocyanate groups. The system further comprises a polyisocyanate component B having at least one polyisocyanate with a functionality 2, the ratio between NCO groups in component B and OH groups in component A being > 1.

L'invention concerne un système à deux composants pour la production de mousse polyuréthane, comprenant un composant polyol A contenant au moins un polyol d'une fonctionnalité d'au moins deux, de l'eau et un système catalyseur contenant au moins deux catalyseurs, un au moins de ces catalyseurs pouvant catalyser la réaction du polyisocyanate avec le polyol et/ou l'eau, et au moins un autre catalyseur pouvant catalyser la trimérisation de groupes isocyanate. Le système comporte également un composant polyisocyanate B contenant au moins un polyisocyanate d'une fonctionnalité ? 2, le rapport des groupes NCO du composant B aux groupes OH du composant A étant ? 1.

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