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    • 2. 发明授权
    • Organosiloxane fluids prepared using organo-lithium reagents
    • 使用有机锂试剂制备有机硅氧烷液体
    • US5663269A
    • 1997-09-02
    • US480873
    • 1995-06-07
    • Hsien-Kun ChuRobert P. CrossPatrick J. CourtneyDavid I. Crossan
    • Hsien-Kun ChuRobert P. CrossPatrick J. CourtneyDavid I. Crossan
    • B29C70/84C08F2/46C08G77/08C08G77/18C08G77/20C08K5/00C08L83/04C09D4/00H05K3/28
    • C08L83/04B29C70/84C08G77/08C08G77/18C08G77/20C08K5/0025C09D4/00C08G77/16H05K3/287
    • The present invention relates to a process for preparing an alkoxy silyl-terminated material, which has at least two alkoxy groups on both terminal ends, said process comprising reacting in the presence of a catalytically effective amount of an organo-lithium reagent an alkoxysilyl-terminated first reactant with a second reactant having both ends of its chain terminating in a silanol. The alkoxy silyl-terminated material may have a variety of polymer backbone types such as silicone, polyurethane, polyamide and the like. These materials are intended to cure by either moisture or photo cure or by dual moisture and photo cure mechanisms. The alkoxy silyl-terminated material is preferably an organopoly-siloxane having at least two alkoxy groups at both terminal ends. The resultant alkoxy-terminated organopolysiloxanes are substantially stable materials as measured by preservation and maintenance of viscosity values (cps) over time and exhibit a higher crosslinking density when cured due to a higher degree of endcapping as compared to the prior art.
    • 本发明涉及制备烷氧基甲硅烷基封端的材料的方法,其在两个末端具有至少两个烷氧基,所述方法包括在催化有效量的有机锂试剂存在下使烷氧基甲硅烷基封端的 第一反应物与第二反应物,其链的两端以硅烷醇终止。 烷氧基甲硅烷基封端的材料可以具有各种聚合物主链类型,例如硅树脂,聚氨酯,聚酰胺等。 这些材料旨在通过水分或光固化或通过双重湿度和光固化机制来固化。 烷氧基甲硅烷基封端的材料优选是在两个末端具有至少两个烷氧基的有机聚硅氧烷。 得到的烷氧基封端的有机聚硅氧烷是基本上稳定的材料,通过随时间保持和维持粘度值(cps)测量,并且与现有技术相比,由于较高程度的封端而固化时表现出较高的交联密度。