A urethane-modified isocyanate composition and polyurethane...

Details A urethane-modified isocyanate composition and polyurethane... A urethane-modified isocyanate composition and polyurethane...

C - Chemistry, Metallurgy

08

G

C08G 18/12 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01)

Patent

CA 2553728

The present invention relates to an isocyanate-terminated composition having utility in the preparation of hydrophilic polyurethanes. The isocyanate composition has an isocyanate content of less than about 15 weight percent and comprises the reaction product of an aliphatic or aromatic polyisocyanate, or mixtures thereof; with a polyol composition that contains a polyether polyol derived from a molecule containing tertiary nitrogen.

La présente invention concerne une composition à base de prépolymère à terminaison isocyanate, utile dans la préparation de polyuréthanes hydrophiles. La composition à base d'isocyanate présente une teneur en isocyanate inférieure à environ 15 % en poids et comprend le produit réactionnel d'un polyisocyanate aliphatique ou aromatique, ou des mélanges associés ; et d'une composition de polyol qui contient un polyol de polyéther dérivé d'une molécule contenant de l'azote tertiaire.

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