Disclosed is a process for preparing a polyorganosilane which comprises subjecting a disilane compound having at least two substituted or unsubstituted hydrocarbyloxy groups in one molecule to disproportionation reaction in the presence of a catalyst comprising a reaction product of an organic alkali metal compound represented by the formula (I): RM (I) wherein R represents a substituted or unsubstituted monovalent hydrocarbon group; and M represents an alkali metal, represented by the formula (III): MR.sup.3.sub.p M (III) wherein R.sup.3 represents a saturated or unsaturated chain or cyclic divalent hydrocarbon group or a divalent heterocyclic group, two or more R.sup.3 s may be the same or different and an ether oxygen atom may exist between two or more R.sup.3 s; p represents an integer of 1 or more; and M represents an alkali metal atom, and at least one of a disilane compound and a silane compound both of which have a substituted or unsubstituted hydrocarbyloxy group(s).
本发明公开了一种制备聚有机
硅烷的方法,包括将至少具有一个取代或未取代的羟基烃基氧基团的二
硅烷化合物,在催化剂的存在下进行不均化反应,所述催化剂包括由以下
化学式(I)表示的有机碱
金属化合物的反应产物:RM(I),其中R表示取代或未取代的一价碳氢基团;M表示碱
金属;以及由以下
化学式(III)表示的化合物的反应产物:MR.sup.3.sub.p M(III),其中R.sup.3表示饱和或不饱和链状或环状二价碳氢基团或二价杂环基团,两个或多个R.sup.3可以相同或不同,并且两个或多个R.sup.3之间可能存在醚氧原子;p表示大于等于1的整数;M表示碱
金属原子;以及至少一个具有取代或未取代羟基烃基氧基团的二
硅烷化合物和一个
硅烷化合物。