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    • 3. 发明申请
    • PREPOLYMER COMPOSITIONS AND SEALANTS MADE THEREFROM
    • 预处理组合物和密封剂
    • WO2005035616A1
    • 2005-04-21
    • PCT/US2004/031108
    • 2004-09-23
    • TREMCO INCORPORATEDFENG, Ta-Min
    • FENG, Ta-Min
    • C08G18/80
    • C09K3/1021C08G18/10C08G2190/00C08G18/289
    • Prepolymer compositions for preparing a one-part, moisture-curable sealant, adhesive or coating, and a method of making such prepolymer compositions are provided. The prepolymer compositions comprise a polyurethane prepolymer that is end-capped with silane groups or a combination of silane groups and end capping groups that have been derived from an alcohol and an amount, referred to hereinafter as an "excess", of unreacted aromatic alcohol having a molecular weight of less than 2000. The excess of unreacted aromatic alcohol in the composition is from greater than 0% to 15% by mole of the level of original NCO groups in the prepolymer. From 50 to 100% of the original NCO groups are end-capped with silane groups, and from 0 to 50% of the original NCO groups are end-capped with a end-capping group that has been derived from an aromatic alcohol, an aliphatic alcohol or both. Sealant compositions and coating compositions comprising the present prepolymer composition are also provided.
    • 提供了用于制备一部分,湿气固化的密封剂,粘合剂或涂层的预聚物组合物,以及制备这种预聚物组合物的方法。 预聚物组合物包含用硅烷基团封端的聚氨酯预聚物或由醇衍生的硅烷基团和封端基团的组合,和下文称为“过量”的未反应芳族醇的量,其具有 分子量小于2000.组合物中未反应的芳族醇的过量是预聚物中原始NCO基团的水平的大于0%至15摩尔%。 原始NCO基团的50%至100%用硅烷基封端,原始NCO基团的0%至50%用封端的封端基团封端,该封端基团衍生自芳族醇,脂族 酒精或两者。 还提供了包含本发明预聚物组合物的密封剂组合物和涂料组合物。