Catalyst for preparing organosiloxanes or polyorganosiloxanes
    1.
    发明授权
    Catalyst for preparing organosiloxanes or polyorganosiloxanes 失效
    用于制备有机硅氧烷或聚有机硅氧烷的催化剂

    公开(公告)号:US5773548A

    公开(公告)日:1998-06-30

    申请号:US569139

    申请日:1996-01-11

    摘要: The invention relates to a catalyst for preparing organosiloxanes and polyorganosiloxanes which are obtained primarily by polycondensation processes. The catalyst of the invention is a reaction product of phosphonitrilic chloride with a compound of the general formula �R.sub.3 SiO(R.sub.2 SiO).sub.m !.sub.3 P.dbd.O (I), where R are, independently of one another, identical or different, unsaturated and/or saturated monovalent hydrocarbon radicals having from 1 to 6 carbon atoms or hydrogen, with the proviso that only one hydrogen atom is bound to each silicon atom and m has a value between 0 and 1000. Volatile chlorine-containing silicon compounds formed during the reaction can, if required, be completely or partially removed.

    摘要翻译: PCT No.PCT / EP94 / 02032 Sec。 371日期1996年1月11日 102(e)日期1996年1月11日PCT Filed 1994年6月22日PCT Pub。 出版物WO95 / 01983 日期1995年1月19日本发明涉及主要通过缩聚方法获得的用于制备有机硅氧烷和聚有机硅氧烷的催化剂。 本发明的催化剂是磷酰氯与通式[R 3 SiO(R 2 SiO)m] 3 P = O(I)的化合物的反应产物,其中R 3彼此相同或不同,不饱和和/或 具有1至6个碳原子的饱和一价烃基或氢,条件是每个硅原子仅结合一个氢原子,m具有0至1000的值。在反应期间形成的含挥发性含氯的硅化合物, 如果需要,可以完全或部分去除。