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    • 5. 发明授权
    • Silicone compositions curable in presence of moisture
    • 在水分存在下可固化的硅酮组合物
    • US6090904A
    • 2000-07-18
    • US63126
    • 1998-04-20
    • Dieter KornerDieter Muller
    • Dieter KornerDieter Muller
    • C08G18/80C08G65/336C08K5/29C08L83/04C08G77/16
    • C08K5/29C08G18/8077C08G65/336C08L83/04C08G77/16
    • Compositions and methods of making them are described and claimed which comprise a polymeric material having not less than two groups bonded to silicon which are hydroxyl or hydrolysable groups, a silane cross-linking agent having at least two oximo groups which are reactive with said polymeric material in presence of moisture to release an oxime condensation by-product and a component effective to control emission of volatile oxime compounds from the composition as it cures. The component effective to control emission of volatile oxime compounds from the composition as it cures is preferably an organic isocyanate having at least one isocyanate group and is preferably present in a stoichiometric ratio with the proportion of condensation by-product to be evolved. The polymeric material is preferably according to the general formula X-A-X where A represents a polyoxyalkylene chain or a polydiorganosiloxane chain and X represents a hydroxyl or hydrolysable group selected form --R".sub.2 SiCH, --R"Si(OR.sup.5).sub.2, --Si(OR.sup.5).sub.3, --R".sub.2 SiOR.sup.5 or --R".sub.2 SiR""SiR".sub.p (OR.sup.5).sub.3-p where R" represents an alkyl or fluoroalkyl group, and is preferably methyl, R"' is a divalent hydrocarbon group which may be interrupted by one or more siloxane spacers having up to six silicon atoms, R.sup.5 represents an alkyl or oxyalkyl group in which the alkyl groups have up to 6 carbon atoms and p has the value 0, 1 or 2.
    • 描述和要求保护组合物及其制备方法,该组合物和方法包括具有不少于两个与羟基或可水解基团键合的基团的聚合物材料,具有至少两个与所述聚合物材料反应的肟基的硅烷交联剂 在水分存在下释放肟缩合副产物和有效控制组合物在其固化时挥发性肟化合物排放的组分。 控制组合物中挥发性肟化合物的排放有效的组分优选为具有至少一个异氰酸酯基团的有机异氰酸酯,并且优选以化学计量比与待放出的缩合副产物的比例存在。 聚合物材料优选根据通式XAX,其中A表示聚氧化烯链或聚二有机硅氧烷链,X表示选自-R''2SiCH,-R''Si(OR5)2,-Si( OR5)3,-R'2SiOR5或-R'2SiR“”SiR''p(OR5)3-p其中R“表示烷基或氟代烷基,优选甲基,R”' 可被一个或多个具有至多6个硅原子的硅氧烷间隔物中断的二价烃基,R 5表示烷基或烷氧基,其中烷基具有至多6个碳原子,p具有0,1或2的值。