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    • 7. 发明授权
    • Phenolically blocked polyurethane prepolymers
    • 苯酚封端的聚氨酯预聚物
    • US07109285B2
    • 2006-09-19
    • US10818328
    • 2004-04-05
    • Michael MagerThomas Stingl
    • Michael MagerThomas Stingl
    • C08G18/80
    • C08G18/4866C08G18/10C08G18/18Y10T428/31551C08G18/62C08G18/58
    • The present invention relates to novel polyurethane prepolymers (PU prepolymers) of low viscosity containing NCO groups blocked with compounds containing phenol groups and to their use for producing polyurethane polymers. The PU prepolymers are prepared by reacting one or more diisocyanates or polyisocyanates with at least one isocyanate-reactive compound with a functionality of at least 1.5 to form an NCO-functional polyurethane prepolymer and subsequently blocking the free NCO groups with at least one hydrocarbon resin containing phenolic OH groups and/or one optionally substituted phenol in the presence of a catalyst which comprises at least one triorganoamine.
    • 本发明涉及含有由含酚基的化合物封闭的含有NCO基团的低粘度的新型聚氨酯预聚物(PU预聚物)及其用于生产聚氨酯聚合物的用途。 PU预聚物通过使一种或多种二异氰酸酯或多异氰酸酯与至少一种官能度至少为1.5的异氰酸酯反应性化合物反应以形成NCO-官能的聚氨酯预聚物并随后用至少一种含有 酚OH基团和/或一种任选取代的苯酚,其在包含至少一种三有机胺的催化剂存在下进行。