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    • 10. 发明授权
    • Room temperature-curable polymeric composition
    • 室温可固化聚合物组合物
    • US4675365A
    • 1987-06-23
    • US848986
    • 1986-04-07
    • Yoshio InoueMasatoshi AraiTakeo InoueAtsushi YaginumaTetsuo Tomizawa
    • Yoshio InoueMasatoshi AraiTakeo InoueAtsushi YaginumaTetsuo Tomizawa
    • C08L71/00C08G65/32C08G75/04C08G77/00C08G77/42C08G77/46C08L71/02C09K3/10
    • C08G75/04
    • The room temperature-curable polymeric composition is prepared by admixing (a) a polyether terminated at both molecular chain ends each with a mercapto group with (b) a 3-methacryloxypropyl silane having at least two hydrolyzable groups, e.g. alkoxy groups, in a molecule and (c) a 1,1,3,3-tetramethyl guanidino-containing organosilicon compound. The component (b) first reacts with the mercapto group of the component (a) to introduce silicon-bonded hydrolyzable groups to the molecular chain ends of the polyether and the silicon-bonded hydrolyzable groups pertain to the crosslinking reaction with the atmospheric moisture. The composition has good storability and workability and is capable of giving a cured rubbery elastomer without the addition of a toxic lead compound as a curing catalyst which is indispensable in the conventional polyether-based room temperature-curable polymeric compositions.
    • 室温可固化的聚合物组合物是通过将(a)在两个分子链端各自带有巯基的聚醚与(b)具有至少两个可水解基团的3-甲基丙烯酰氧基丙基硅烷混合来制备的。 烷氧基,和(c)含有1,1,3,3-四甲基胍基的有机硅化合物。 组分(b)首先与组分(a)的巯基反应以将导致硅键合的可水解基团引入到聚醚的分子链末端,硅键合的可水解基团涉及与大气湿气的交联反应。 该组合物具有良好的储存性和可加工性,并且能够在不添加有毒铅化合物作为固化催化剂的情况下得到固化的橡胶弹性体,其在常规的聚醚基室温可固化聚合物组合物中是必不可少的。