Evonik Degussa Gmbh

Solvay Deutschland Gmbh

Gm Global Technolgoy Operations, Inc.

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Wacker-chemie Gmbh

Albert-ludwigs-universitat Freiburg

Gerhard Roewer

Jaroslaw Monkiewicz

Peter Sartori

Dieter Hasenauer

Ulrich Eberle

Gerd Arnold

Dieter Sporn

Wolfgang Habel

Florian O Mertens

Edwin Kroke

Robin Richter

Erich Seider

Juergen Clade

Uwe Paetzold

Sven Koether

Gert Wolf

Felix Baitalow

Steffen Hausdorf

Gerrit Fester

Ingo Roever

Erika Brendler

Thomas Lange

Erica Brendler

Eberhard Mueller

Hans-Juergen Hoene

Dorit Mainhold

Hans-Peter Martin

Hans Kraemer

Andreas Oelschlaeger

Klaus Bohmhammel

Bernhard Harnack

Holger Walter

The invention relates to a process for the catalytic hydrodehalogenation of SiClto form HSiCl, which comprises bringing a gaseous feed mixture comprising hydrogen and silicon tetrachloride into direct contact with at least one heating element of a resistance heating device, with the heating element being composed of a metal or a metal alloy and being heated to carry out the reaction.

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The invention relates to a method for producing a polysilane-polycarbosilane copolymer solution. Said method comprises the preparation of a polysilane, obtained by the disproportionation of a methylchlorodisilane or a mixture of methylchlorodisilanes of formula Si2MeC1with a Lewis base as the catalyst, a subsequent thermal cross-linking of the polysilane to form an infusible polysilane-polycarbosilane copolymer that is soluble in inert solvents, in addition to the production of said solution by the dissolution of the polysilane-polycarbosilane copolymer in an inert solvent. The invention also relates to a method for producing oxygen-depleted ceramic fibers and other molded bodies with a composition similar to that of SiC. Said method comprises the spinning of the solution to obtain green fibers according to the dry spinning method and the pyrolysis of the dried green fibers in an inert gas atmosphere or a reductive atmosphere.

Polysilane-polycarbosilane copolymer solutions and oxygen-depleted ceramic moulded bodies prepared therefrom with compositions similar to that of SiC

A process for producing borazane from boron-nitrogen and boron-nitrogen-hydrogen containing BNH-waste products. The process includes reacting the BNH-waste products with a hydrogen halide, having the formula HX, wherein X is selected from the group consisting of F, Cl, Br, I, and combinations thereof, to form any of the following: a boron trihalide, having the formula BX, an ammonium halide, having the formula NHX, and hydrogen. The boron trihalide is then reacted with the hydrogen to form diborane, having the formula BH, and hydrogen halide. The ammonium halide is then converted to ammonia, having the formula NH, and hydrogen halide. The diborane is then reacted with the ammonia to form borazane, having the formula BHNH.

Procedure for the hydrogenation of BNH-containing compounds

The present invention relates to a for controlled synthesis of hydrogen-rich cyclosiloxanes of the (HSiO)type. where n is an integer equal to or greater than 3, by reacting: The ring size is advantageously adjustable to n=3, 4, 5, 6 (especially n=4 to 6), such that larger rings are not formed. In a particularly advantageous embodiment of the process, for the selective preparation of cyclohexasiloxane (HSiO), after the reaction, the solvent is at least partly removed and then solvent is added again.

Process for the manufacture of hydrogen-rich cyclosiloxane

Catalytic dehalogenation (or hydrodehalogenation) of halogen-containing compounds of elements of group IV of the periodic table in the presence of hydrogen is carried out using a finely-dispersed catalytically active material which comprises silicon and at least one transition metal, and which is characterized by high catalytic activity and stability. This process can be used, for example, for synthesizing compounds or alternatively for decomposing halogen-containing compounds, for instance in waste-water or waste-gas purification processes. It is also suitable for dehalogenation (hydrodehalogenation) of halogen-containing silane compounds, for instance of silicon tetrachloride or alkyl trichlorosilane compounds, and the original purity of the silanes used as starting materials is retained by the products. Tetrachlorosilane, for example, can be converted into trichlorosilane.

Catalytic hydrodehalogenation of halogen-containing compounds of group

A process for producing oxygen-free or low-oxygen shaped bodies of silicon carbide, particularly SiC fibers, by using chemically reactive polysilanes and/or polycarbosilanes as precursors. In accordance with the invention green fibers are stabilized preferably in the presence of reactive gases.

Process for producing an oxygen-free or low-oxygen, high-temperature

Catalysts composed of nitrogen-containing heterocyclic hydrocarbons, optionally fixed to a support material, for disproportionating aryl- and alkylhalodisilanes into the corresponding mono- and polysilanes, and a process of using these catalysts for disproportionating disilanes.

Catalyst for disproportionating aryl- or alkyhalodisilanes into aryl- or

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Freiberg, Germany

Gerhard Roewer