Polyurethane composition

Details Polyurethane composition Polyurethane composition

C - Chemistry, Metallurgy

08

G

C08G 18/10 (2006.01) C08G 18/65 (2006.01)

Patent

CA 2201929

A method of producing a polyurethane having a density of from 0.3 to 0.7 g/cc and improved physical and dynamic properties comprising preheating a prepolymer consisting of 4,4'-diphenylmethane di-isocyanate and a polymeric polyol having a molecular weight of at least 1000 and mixing said prepolymer with a resin mixture of a polymeric polyol which may be the same as the first polyol.

Procédé de production d'un polyuréthanne possédant une densité de l'ordre de 0,3 à 0,7 g/cc ainsi que de bonnes propriétés physiques et dynamiques, consistant à préchauffer un prépolymère consistant en un di-isocyanate de 4,4'-diphénylméthane et un polyol polymère possédant un poids moléculaire d'au moins 1000, puis à mélanger ce prépolymère avec un mélange résineux d'un polyol polymère qui peut être le même que le premier polyol.

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