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    • 1. 发明申请
    • MICROCAPSULES HAVING ENCAPSULTED CATALYSTS
    • 具有封装催化剂的微球
    • WO2016133946A1
    • 2016-08-25
    • PCT/US2016/018147
    • 2016-02-17
    • DOW CORNING CORPORATIONMULTIBASE S.A.
    • BEYER, PatrickGALEONE, FabrizioGIBAS, Roger, A.GRADELET, YannMARTEAUX, LeonTHIBAUT, MarcZIMMERMAN, Brett, Lee
    • B01J13/18B01J37/04B01J35/08
    • B01J13/18B01J27/13B01J33/00B01J35/023B01J37/0219
    • The present invention provides processes for preparing microcapsules encapsulating a catalyst, the process comprising forming an aqueous emulsion comprising particles having the catalyst, an aqueous continuous phase, and an interface between the particles and the aqueous continuous phase; adding a water reactive silicon compound to the aqueous continuous phase; polymerizing the water reactive silicon compound at the interface of the particles and the continuous phase to obtain microcapsules comprising a core having the catalyst surrounded by a shell of a silicon-based network polymer in an aqueous medium; and removing the aqueous medium to obtain microcapsules comprising a core having the catalyst surrounded by a shell of a silicon-based network polymer and having from 0 to 1 % of water based on the weight of the microcapsules. The present invention also provides processes for curing a composition wherein the processes comprise microcapsules encapsulating catalysts, encapsulated catalyst compositions comprising microcapsules encapsulating catalysts, and one-part compositions for making hydrosilylation product free of cure inhibitors.
    • 本发明提供了制备包封催化剂的微胶囊的方法,该方法包括形成包含具有催化剂的颗粒,水性连续相以及颗粒与水性连续相之间界面的水乳液; 向水相连续相中加入水反应性硅化合物; 在颗粒和连续相的界面处聚合水反应性硅化合物以获得包含在水介质中由硅基网状聚合物的壳包围的催化剂的芯的微胶囊; 并除去水性介质以获得包含具有由硅基网状聚合物的壳包围的催化剂的芯并且基于微胶囊的重量具有0至1%的水的微胶囊。 本发明还提供了用于固化组合物的方法,其中所述方法包括包封催化剂的微胶囊,包含包封催化剂的微胶囊的包封催化剂组合物和用于制备不含固化抑制剂的氢化硅烷化产物的一部分组合物。