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1. (EP1913059) PROCESS FOR SYNTHESIS OF DIORGANOSILANES BY DISPROPORTIONATION OF HYDRIDOSILOXANES

Office : European Patent Office
Application Number: 05812173 Application Date: 29.08.2005
Publication Number: 1913059 Publication Date: 23.04.2008
Publication Kind : A1
Designated States: AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LI, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR
Prior PCT appl.: Application Number:US2005030653 ; Publication Number: Click to see the data
IPC:
C08G 77/12
C07F 7/08
C08G 77/04
C08G 77/08
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
07
ORGANIC CHEMISTRY
F
ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
7
Compounds containing elements of the 4th Group of the Periodic System
02
Silicon compounds
08
Compounds having one or more C-Si linkages
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
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
CPC:
C08G 77/045
C07F 7/0874
C07F 7/0896
Applicants: MOMENTIVE PERFORMANCE MAT INC
Inventors: RUBINSZRAJN SLAWOMIR
CELLA JAMES ANTHONY
CHOJNOWSKI JULIAN
FORTUNIAK WITOLD
KURJATA JAN
Priority Data: 37601405 30.06.2005 PL
11185466 20.07.2005 US
2005030653 29.08.2005 US
Title: (DE) VERFAHREN ZUR SYNTHESE VON DIORGANOSILANEN DURCH DISPROPORTIONIERUNG VON HYDRIDOSILOXANEN
(EN) PROCESS FOR SYNTHESIS OF DIORGANOSILANES BY DISPROPORTIONATION OF HYDRIDOSILOXANES
(FR) PROCEDE DE SYNTHESE DE DIORGANOSILANES PAR DISPROPORTIONNEMENT D'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.
(FR) La présente invention concerne un nouveau procédé de préparation de diorganosilanes par disproportionnement d'hydridosiloxanes comprenant au moins un groupe SiH terminal et au moins une liaison siloxane, en présence de catalyseurs acide de Lewis. La réaction est sélective et s'effectue en conditions douces. Le triaryle borane et le tris(pentafluorophényl)borane sont particulièrement adaptés pour être utilisés comme catalyseurs dans cette réaction. Des catalyseurs organiques tels que le tris(pentafluorophényl)borane sont généralement préférés du fait de leurs grandes solubilité et stabilité dans le mélange réactionnel, par rapport aux catalyseurs acide de Lewis inorganiques. Le produit diorganosilane peut être isolé du mélange réactionnel par des techniques conventionnelles telles que la distillation.
Also published as:
KR1020080028983BRPI0520407JP2009500321CN101228209IN2175/MUMNP/2007WO/2007/005037