申请人:Dow Corning Corporation
公开号:EP2639236A1
公开(公告)日:2013-09-18
A method of forming chloro-substituted silanes from the reaction of an alkoxy-or acetoxy-substituted silane with a chlorinating agent in the optional presence of a catalyst is provided. For instance, chloro-substituted silanes, including but not limited to silicon tetrachloride, are formed by reacting a chlorinating agent, such as thionyl chloride, with an alkoxysilane having the formula (R'O)4-xSiRx, where R and R' are independently selected alkyl groups comprising one or more carbon atoms and x is 0, 1, 2, or 3. The catalyst may be dimethylformamide, (chloromethylene)dimethyliminium chloride, or triethylamine, among others. The chloro-substituted silane formed in the reaction along with several by-products has the formula (R'O)4-x-ySiRxCly; where x is 0, 1, 2, or 3 and y is 1, 2, 3, or 4. One of the by-products of the reaction is an alkyl chloride.
提供了一种从烷氧基或乙酰氧基取代的硅烷与氯化剂反应,在可选情况下存在催化剂的方法形成氯取代硅烷。例如,通过将氯化剂(如亚硫酰氯)与具有公式(R'O)4-xSiRx的烷氧基硅烷反应,形成了包括但不限于四氯化硅在内的氯取代硅烷,其中R和R'分别是独立选择的含有一个或多个碳原子的烷基基团,x为0、1、2或3。催化剂可以是二甲基甲酰胺、(氯甲基)二甲基亚胺盐酸盐或三乙胺等。反应中形成的氯取代硅烷以及若干副产物的化学式为(R'O)4-x-ySiRxCly;其中x为0、1、2或3,y为1、2、3或4。反应的副产物之一是烷基氯化物。