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    • 46. 发明授权
    • One-part moisture curable sealant and method of making the same
    • 一部分湿固化密封剂及其制备方法
    • US08143370B2
    • 2012-03-27
    • US12500145
    • 2009-07-09
    • Renhe Lin
    • Renhe Lin
    • C08G75/02
    • C08L81/02C08G75/045C08G75/12
    • One-part moisture curable sealant compositions and methods of making the same are provided. The composition includes a silane-terminated polythioether component and a catalyst. The silane-terminated polythioether component and catalyst are isolated from moisture to prevent curing. The composition is stable against curing at ambient temperature and under conditions substantially free of moisture. When the composition is applied to a substrate and exposed to moisture, the composition cures to form a sealant. A method of making a sealant composition includes reacting a mercapto-terminated polythioether with a compound having a silane group to form a silane-terminated polythioether. The silane-terminated polythioether is then combined with a catalyst and isolated from moisture to prevent curing. Lastly, the composition is applied to a substrate and exposed to moisture which allows the composition to cure to form a sealant.
    • 提供一部分可湿气固化的密封剂组合物及其制备方法。 该组合物包括硅烷封端的聚硫醚组分和催化剂。 硅烷封端的聚硫醚组分和催化剂与水分隔离以防止固化。 该组合物在环境温度和基本上不含水分的条件下对固化是稳定的。 当将组合物施用于基材并暴露于水分时,组合物固化形成密封剂。 制造密封剂组合物的方法包括使巯基封端的聚硫醚与具有硅烷基团的化合物反应以形成硅烷封端的聚硫醚。 然后将硅烷封端的聚硫醚与催化剂组合,并从水分中分离以防止固化。 最后,将组合物施用于基材并暴露于水分,这允许组合物固化以形成密封剂。