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    • 27. 发明授权
    • Curable compositions containing silylated polyurethanes
    • 含有甲硅烷基化聚氨酯的固化组合物
    • US08609800B2
    • 2013-12-17
    • US12906397
    • 2010-10-18
    • Helene BoudetAndreas BolteThomas BachonLars ZanderChristiane KunzeJohann KleinNicole Ditges
    • Helene BoudetAndreas BolteThomas BachonLars ZanderChristiane KunzeJohann KleinNicole Ditges
    • C08G18/83
    • C09J175/04C08G18/10C08G18/765C08G2190/00C08G18/289
    • Silylated polyurethanes can be manufactured by reacting at least one polyol compound, having a molecular weight from 4000 to 20,000 dalton, with a diisocyanate, with a stoichiometric excess of the diisocyanate compound with respect to the polyol compound or compounds, with the result that a polyurethane prepolymer that is isocyanate-terminated is formed; and by subsequently reacting the polyurethane prepolymer with one or more OH-terminated silanes of formula (1) to yield a polyurethane having predominantly terminal alkoxysilyl groups. In formula (1), m is equal to 0, 1, or 2, R1 is an alkyl residue having 1 to 4 carbon atoms, R2 is an alkyl residue having 1 to 4 carbon atoms, R3 is a divalent organic residue having 1 to 12 atoms, selected from C, N, S, and/or O, in the chain, but by preference exclusively carbon atoms, R4 is a hydrogen atom or an alkyl residue having 1 to 10 carbon atoms, and R is a difunctional organic group, preferably a linear or branched alkyl group having 1 to 6 carbon atoms. The silylated polyurethanes are suitable for use in a preparation as an adhesive, sealant, or coating agent.
    • 甲硅烷基化聚氨酯可以通过使至少一种分子量为4000至20,000道尔顿的多元醇化合物与二异氰酸酯相对于多元醇化合物或化合物与化学计量过量的二异氰酸酯化合物反应而制备,结果是聚氨酯 形成异氰酸酯封端的预聚物; 并随后使聚氨酯预聚物与一种或多种式(1)的OH封端的硅烷反应,得到主要具有末端烷氧基甲硅烷基的聚氨酯。 在式(1)中,m等于0,1或2,R 1是具有1至4个碳原子的烷基,R 2是具有1至4个碳原子的烷基,R 3是具有1至 在链中选自C,N,S和/或O的12个原子,但仅仅是碳原子,R4是氢原子或具有1-10个碳原子的烷基,R是双官能有机基团 优选具有1-6个碳原子的直链或支链烷基。 甲硅烷基化聚氨酯适用于作为粘合剂,密封剂或涂层剂的制剂。