-
公开(公告)号：US06534184B2
公开(公告)日：2003-03-18
申请号：US09793224
申请日：2001-02-26
IPC分类号： B32B2520
CPC分类号： C08G77/452 , C08G77/42 , C09D183/14 , Y10T428/31663
摘要： Polysilazane/polysiloxane block copolymers particularly suitable for the preparation of durable, adherent silicon-containing coatings comprising polymeric segments of a polysilazane and polysiloxane are disclosed.
-
公开(公告)号：US06329487B1
公开(公告)日：2001-12-11
申请号：US09439871
申请日：1999-11-12
IPC分类号： C08E7708
摘要： This invention is directed to novel ammonolysis products including novel silazanes and polysilazanes characterized by repeating units of silicon-nitrogen in a polymeric compound having a reduced amount of Si—H bonds relative to the amount of Si—H bonds in the starting compound. Preparation of these novel ammonolysis products comprises introducing a starting compound containing at least one Si—H bond, such as a halosilane into a stoichiometric excess of anhydrous liquid ammonia wherein an ammonium halide is generated acting as an acid catalyst to provide an ionic and/or acidic environment for preparing the novel ammonolysis compounds. The prepared novel ammonolysis products are retained in a separate liquid-phase layer and distinct from the anhydrous liquid ammonia containing the ionized ammonium halide. Also provided are methods to purify ammonolysis products and to modify ammonolysis products by controllably increasing viscosity from a liquid to a solid and viscosities there between.
摘要翻译： 本发明涉及新型氨解产物，其包括新型硅氮烷和聚硅氮烷，其特征在于相对于起始化合物中的Si-H键的量，具有减少量的Si-H键的聚合物中的硅 - 氮重复单元。 这些新的氨解产物的制备包括将含有至少一个Si-H键的起始化合物如卤代硅烷引入化学计量过量的无水液氨中，其中产生卤化铵作为酸催化剂以提供离子和/或 用于制备新型氨解化合物的酸性环境。 所制备的新型氨解产物保留在单独的液相层中，与含有电离卤化铵的无水液氨不同。 还提供了通过可控地增加从液体到固体的粘度和其间的粘度来纯化氨解产物和改变氨解产物的方法。
-
公开(公告)号：US06652978B2
公开(公告)日：2003-11-25
申请号：US10075729
申请日：2002-02-14
IPC分类号： B32B2520
CPC分类号： C08G77/50 , C08G77/54 , C08G77/62 , C09D183/14 , C09D183/16 , Y10S528/901 , Y10T428/31663
摘要： Surfaces of various types of substrates, including glass, ceramics, and metals, are rendered stable to heat and corrosion by treatment with a silicon-containing polymer which may be an alkoxy silyl substituted polysilazane or an alkoxy silyl substituted polysiloxazane. Polymeric coatings of the compositions may be cured at room temperature to about 50° C. in an atmosphere containing moisture without requiring the introduction of a catalytic curing agent.
摘要翻译： 通过用可以是烷氧基甲硅烷基取代的聚硅氮烷或烷氧基甲硅烷基取代的聚硅氮烷的含硅聚合物进行处理，使各种类型的基材（包括玻璃，陶瓷和金属）的表面对热和腐蚀变得稳定。 组合物的聚合物涂层可以在室温至约50℃下在含有水分的气氛中固化，而不需要引入催化固化剂。
-
-
搜索结果
3 条记录 (耗时 0.022 秒)
