This invention relates to a polyisocyanate prepolymer for polyurethane and polyurethane/urea elastomer synthesis and to the resulting elastomer. The prepolymer is formed by reacting a cyclohexanediisocyanate with a long chain polyol under conditions such that essentially a 2:1 adduct is formed. Excess cyclohexanediisocyanate is removed prior to forming the elastomer.
本发明涉及一种用于聚
氨酯和聚
氨酯/
尿素弹性体合成的多
异氰酸酯预聚物,以及由此产生的弹性体。这种预聚物是通过
环己烷二
异氰酸酯与长链多元醇在基本上形成 2:1 加合物的条件下发生反应而形成的。在形成弹性体之前,多余的
环己烷二
异氰酸酯会被去除。