Wacker Chemie Ag

Andreas Bockholt

Konrad Mautner

Bernhard Rieger

Gerald Fleischmann

Klaus Kaeppler

Leonhard Brader

Frank Betschinger

Javad Mohsseni

Andreas Feigl

Peter Nuernberg

Klaus Käppler

Manfred Böck

Christian Kaltenmarkner

Peter Nürnberg

A method for converting organosilanes by reacting at least one silane (1) of the general formulaRSiCl  (I)with at least one further silane (2) of the general formulaRSiCl  (II)wherein silane (2) is identical or different from silane (1), optionally with additional use of silanes (3) which contain Si-bonded hydrogen and have the formulaRHSiCl  (III)in the presence of aluminum salts, preferably aluminum halides, as catalysts and in the presence of cocatalysts, to obtain at least one silane (4) which differs from silanes (1) and (2) and has the general formulaRSiCl  (IV).

Process for converting organosilanes

Aluminum chloride is separated from a silane mixture containing aluminum chloride by reacting the aluminum chloride with a compound reactive therewith which forms an ionic liquid or solid, and separating the ionic liquid or solid from the now-purified silane.

Process for separating aluminum chloride from silanes

Cleaning industrial plant components to remove silane, metal halide, and organometallic halide contaminants and mixtures thereof, involves treating the plant components with a liquid nitrile or amine or mixture thereof or with a solution of a nitrile or amine or mixture thereof in an aprotic solvent.

Cleaning industrial plant components to remove metal halides

The invention provides a process for preparing polysilanes of the general formula (1) SiR(1), in which silane of the general formula (2) RSiH(1a) is converted in the presence of boron compounds of the general formula (3) RB (3), where Ris a hydrocarbyl radical having 1 to 18 carbon atoms, R is hydrogen or an Rradical, Ris fluorine, chlorine, bromine or a hydrocarbyl radical which has 1 to 18 carbon atoms and may bear substituents selected from fluorine, chlorine, bromine, iodine and NO, n has integer values from 2 to 100,000, and m is 0, 1 or 2.

Process for preparing polysilanes

In the preparation of phosphonatosilanes by reaction of organophosphites with halocarbon-functional silanes, the safety of the reaction is markedly increased while increasing space/time yield by continuously or periodically withdrawing reaction mixture, freeing the withdrawn mixture of phosphonatosilane product, and recycling the product-depleted remainder back to the reaction. Operation at temperatures of 100&#xb0; C. or lower is made possible by this process.

Method for producing phosphonatosilanes

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Munich, Germany

Andreas Bockholt