POLYURETHANE COMPOSITION WITH IMPROVED DYEABILITY

摘要

Provided is a polyurethane resin composition which shows an excellent dyeing property without the deterioration of other physical properties when the composition is processed into fiber. The polyurethane resin composition is obtained by reacting a polyol and an excessive amount of a diisocyanate compound so as to obtain a prepolymer having an isocyanate group at the both terminals of a polyol, and adding a diamine-based or diol-based chain extender to it, wherein the polyurethane resin composition comprises 0.5-5.0 wt% of a silane coupling agent and a silica particle. Preferably the silica particle is aminosilane and has an average particle size of 0.1-5 micrometers.