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1. (KR1020080028983) PROCESS FOR SYNTHESIS OF DIORGANOSILANES BY DISPROPORTIONATION OF HYDRIDOSILOXANES

Office : Republic of Korea
Application Number: 1020087002529 Application Date: 30.01.2008
Publication Number: 1020080028983 Publication Date: 02.04.2008
Publication Kind : A
IPC:
C08G 77/12
C08G 77/08
C08G 77/04
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04
Polysiloxanes
12
containing silicon bound to hydrogen
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04
Polysiloxanes
06
Preparatory processes
08
characterised by the catalysts used
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04
Polysiloxanes
CPC:
C08G 77/045
C07F 7/0874
C07F 7/0896
Applicants: MOMENTIVE PERFORMANCE MATERIALS INC.
Inventors: RUBINSZRAJN SLAWOMIR
CELLA JAMES ANTHONY
CHOJNOWSKI JULIAN
FORTUNIAK WITOLD
KURJATA JAN
Priority Data: 2005 185466 20.07.2005 US
2005 376014 20.07.2005 US
Title: (EN) PROCESS FOR SYNTHESIS OF DIORGANOSILANES BY DISPROPORTIONATION OF HYDRIDOSILOXANES
Abstract:
(EN) The present invention provides a novel method for the preparation of diorganosilanes by disproportionation of a hydridosiloxanes comprising at least one terminal SiH group and at least one siloxane bond in the presence of Lewis acid catalysts. The reaction is both selective and occurs under mild conditions. The triaryl borane, tris(petafluorophenyl) borane, is especially suited for use as a catalyst in the reaction. Organic catalysts such as tris(pentafluorophenyl)borane are typically preferred owing to their greater solubility and stability in the reaction mixture, relative to inorganic Lewis acid catalysts. The product, diorganosilane may be isolated from the product mixture by conventional techniques such as distillation. ┬ęKIPO&WIPO 2008
Also published as:
BRPI0520407EP1913059JP2009500321CN101228209IN2175/MUMNP/2007WO/2007/005037