An isocyanate prepolymer composition using anhydrosugar alcohol-alkylene glycol and polyhydric alcohol, an end-capped isocyanate prepolymer composition prepared from the prepolymer composition and an impact modifier comprising the same, and an epoxy resin composition comprising the impact modifier and an adhesive comprising the same

Abstract

The present invention relates to an isocyanate prepolymer composition using anhydrous sugar alcohol-alkylene glycol and polyhydric alcohol and its use. More specifically, the invention relates to an isocyanate prepolymer composition prepared by urethane reaction of a polyol composition comprising anhydrous sugar alcohol-alkylene glycol, which is an alkylene oxide adduct of anhydrous sugar alcohol, a polyether polyol, and a polyhydric alcohol, and a polyisocyanate, which is environmentally friendly, and in particular, an isocyanate prepolymer composition prepared using the same that can improve the T-peel strength and impact strength (in particular, room temperature impact strength) of an adhesive epoxy resin composition to which the end-capped isocyanate prepolymer composition prepared using the same is applied as an impact modifier, an isocyanate prepolymer composition using the same, an impact modifier including the same, an epoxy resin composition including the same, and an adhesive including the same.

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