An isocyanate-terminated prepolymer composition and a...

Details An isocyanate-terminated prepolymer composition and a... An isocyanate-terminated prepolymer composition and a...

C - Chemistry, Metallurgy

08

G

C08G 18/42 (2006.01) C08G 18/10 (2006.01) C08G 18/76 (2006.01)

Patent

CA 2580582

The present invention relates to an isocyanate-terminated prepolymer composition obtained from reaction of a methylene diphenylisocyanate, comprising at least 25 weight percent of the 2,4'- isomer, with a polycaprolactone polyol; and to polyurethane or polyurea elastomers obtained from the said isocyanate-terminated prepolymer composition.

La présente invention a pour objet une préparation de prépolymère portant des groupements isocyanate en bout de chaîne, obtenue par réaction de diphénylisocyanate de méthylène, comprenant au moins 25 pourcent d~isomère 2,4~, avec un polycaprolactone polyol. La présente invention a également pour objet des élastomères de type polyuréthane ou polyurée obtenus à partir de ladite préparation de prépolymère.

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