Process for preparing crosslinked and branched...

Details Process for preparing crosslinked and branched... Process for preparing crosslinked and branched...

2006-12-26

2006-12-26

Barts, Samuel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C528S014000

Reexamination Certificate

active

07153990

ABSTRACT:
A process for preparing crosslinked or branched organopolysilanes involves reacting halosilanes with alkali metal and/or alkaline earth metal, the reaction mixture, immediately after reaction has ended, being treated at at least 50° C. for at least 30 seconds with a mineral treating agent which is one or more polysilicic acids, silicates or aluminosilicates.

REFERENCES:
patent: 4921321 (1990-05-01), Weidmann
patent: 5905139 (1999-05-01), Mori et al.
patent: 0 949 289 (1999-10-01), None
patent: 9309954 (1997-12-01), None
Patent Abstract of Japan, vol. 1997, No. 4, Corresponding to JP-A-09309954.
Patent Abstract of Japan, vol. 1998, No. 14, Corresponding to JP-A-10237177.
English Abstract of Japanese JP-A 9309954, May 1996.

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