초록 ▼

Polyol component essentially consists of polyesterpolyetherpolyol containing polyesterpolyol by the weight ratio of 100:0 to 20:80, in which the polyesterpolyetherpolyol is a copolymer of polytetramethyleneglycol (PTMG) and e

Polyol component essentially consists of polyesterpolyetherpolyol containing polyesterpolyol by the weight ratio of 100:0 to 20:80, in which the polyesterpolyetherpolyol is a copolymer of polytetramethyleneglycol (PTMG) and e

대표청구항 ▼

In a microcellular polyurethane elastomer produced by foaming and polymerization reaction of prepolymer with terminal radical of NCO prepared by the reaction of polyol component and isocyanate component, the improvement comprising; the polyol component essentially consists of polyester-polyetherpoly

In a microcellular polyurethane elastomer produced by foaming and polymerization reaction of prepolymer with terminal radical of NCO prepared by the reaction of polyol component and isocyanate component, the improvement comprising; the polyol component essentially consists of polyester-polyetherpolyol containing polyesterpolyol by the weight ratio of 100:0 20:80, in which the polyesterpolyetherpolyol is a copolymer of polytetramethyleneglycol and e20:80 to 80:20 with an average molecular weight of 1000 to 3000 and the polyesterpolyol is a condensate of adipic acid as a main acid component with an average molecular weight of 1000 to 3000, and the isocyanate component essentially consists of 4,4′-diphenylmethanediisocyanate.