| 摘要 |
A heat-curable polyurethane composition, comprising: (a) a secondary or tertiary aliphatic diisocyanate prepolymer; (b) a polyol compound; (c) a chain extender selected from the group consisting of sucrose and sorbitol; and (d) a curingly effective amount of a catalyst selected from the group consisting of magnesium acetylacetonate, nickel acetylacetonate, magnesium stearate, cadmium stearate, and organic acid salts of 1,8-diazabicyclo [5.4.0]undec-7-ene.
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