Huels Aktiengesellschaft

Evonik Degussa Gmbh

Degussa-huels Aktiengesellschaft

Huls Aktiengesellschaft

Huls Troisdorf Aktiengesellschaft

Reinhold Schork

Hartwig Rauleder

Hans-Joachim Kotzsch

Burkhard Standke

Ekkehard Mueh

Jaroslaw Monkiewicz

Hans-Joachim Vahlensieck

Claus-Dietrich Seiler

Reinhard Matthes

Michael Horn

Peter Jenkner

Albert-Johannes Frings

Juergen Erwin Lang

Frank Kropfgans

Harald Klein

Albert Frings

Rainer Nicolai

Norbert Schladerbeck

Ekkehard Müh

Ingo Pauli

Uwe Schön

Joachim Diefenbach

André Mecklenburg

The invention relates to a process for dismutating at least one halosilane and reducing the content of extraneous metal and/or a compound containing extraneous metal in the at least one halosilane and in the at least one silane obtained, by contacting at least one halosilane of the general formula I, HSiCl(I), where n and m are integers and n=1, 2 or 3 and m=1, 2 or 3 and n+m=4, with a particulate, organic, amino-functional resin to obtain at least one silane of the general formula II, HSiCl(II), where a and b are integers and a=0, 2, 3 or 4 and b=0, 1, 2 or 4 where a+b=4, in one step, in which the content of extraneous metal and/or compounds containing extraneous metal has been reduced compared to the halosilane of the formula I. The invention further provides for the use of this resin for dismutating halosilanes and as an absorbent of extraneous metals or compounds containing extraneous metal in a process for preparing monosilane.

Process and use of amino-functional resins for dismutating halosilanes and for removing extraneous metals

The invention relates to a process for preparing monochlorosilane by reaction of monosilane and dichlorosilane in the presence of a catalyst. In the process of the invention, monochlorosilane is formed by comproportionation of monosilane and dichlorosilane. The invention further relates to the use of the monochlorosilane produced and also a plant for carrying out the process.

Monochlorosilane, process and apparatus for the preparation thereof

The invention relates to an empty container () for receiving air- and/or moisture-sensitive compounds, comprising a connecting unit () and an inner volume of at least 300 liters and adapters for connecting the empty container, and to the use thereof.

Large container for handling and transporting high-purity and ultra high purity chemicals

Magnesium ethoxide having a high coarse particle content, process for its preparation and its use

Process for preparing alkoxysilanes

The present invention relates to a storage-stable solution of a mixture of carbonated magnesium methoxide of the formula Mg(CH.sub.3 O).sub.2 (CO.sub.2).sub.n, carbonated magnesium ethoxide of the formula Mg(C.sub.2 H.sub.5 O).sub.2 (CO).sub.2).sub.n and a carbonated mixed alkoxide of the formula Mg(CH.sub.3 O).sub.x (C.sub.2 H.sub.5 O).sub.y (CO.sub.2).sub.n, in which 0&lt;x, y&lt;2 and x+y=2, in a combination of methanol and ethanol, and processes for the preparation thereof, the magnesium content of the solution being from 0.1 to 11% by weight, based on the total weight of the solution, and the CO.sub.2 content n being from 1.0 to 2.2. The present solutions are used, inter alia, for the preservation of paper and for the preparation of a catalyst for the polymerization of olefins.

Storage-stable solution of a mixture of carbonated magnesium methoxide,

The present invention relates to a storage-stable solution of carbonated magnesium methoxide of the formula Mg(CH.sub.3 O).sub.2 (CO.sub.2).sub.n in methanol, and processes for their preparation by reacting metallic magnesium with methanol and CO.sub.2 or reacting magnesium methoxide in methanol with CO.sub.2, wherein the magnesium content of the solution is from 0.1 to 8% by weight, based on the total weight of the solution, and the CO.sub.2 content n is from 1 to 2.2. The present solution is used, inter alia, for the preservation of paper or for the preparation of a catalyst for the polymerization of olefins.

Storage-stable solution of carbonated magnesium methoxide in methanol

The invention relates to storage-stable solutions of carbonated magnesium ethylate of the formula Mg(C.sub.2 H.sub.5 O).sub.2 (CO.sub.2).sub.n in ethanol and processes for their preparation, wherein (1) the magnesium content of the solution is 2.5 to 6% by weight, based on the total solution, and the CO.sub.2 content (n) is 1.55 to 1.85, (2) the magnesium content of the solution is 1.5 to 2.5% by weight, based on the total solution, and the CO.sub.2 content (n) being 1.55 to 1.90 or (3) the magnesium content of the solution is less than 1.5% by weight, based on the total solution, and the CO.sub.2 content (n) is 1.55 to 2.2.

Storage-stable solutions of carbonated magnesium ethylate in ethanol and

Di-tert.butoxydiacetoxysilane is prepared by reacting tetraacetoxysilane with tert.butanol at a reaction temperature of up to 60.degree. C., and the resulting di-tert.butoxydiacetoxysilane is isolated.

Process for the preparation of di-tert.butoxydiacetoxysilane

Acyloxysilanes and carboxylic acid chlorides can be prepared simultaneously and continuously from organochlorosilanes and monocarboxylic acid anhydrides. Catalytically active amounts of organic bases soluble in the reaction mixture, their salts or organic acid amides are employed here.

Process for the simultaneous and continuous preparation of

Disclosed are a method and apparatus for the preparation of dichlorosilane by the disproportionation of trichlorosilane at standard pressure and temperatures up to the boiling point of the trichlorosilane in a reactor having a solid-bed catalyst while removing dichlorosilane with contents of trichlorosilane from the gas chamber of the reactor for separation in a distillation column and derivation of liquid reaction phase for the separation of tetrachlorosilane from trichlorosilane in a distillation column with recycling of trichlorosilane into the reactor. Preferably a common distillation column is provided for both separations. The apparatus consists of the solid-bed reactor and the distillation column which is disposed alongside it and in which the receiver for pure tetrachlorosilane, the infeed of liquid reaction phase, the tapping and recycling of trichlorosilane into the reactor, and the input of gaseous dischlorosilane with contents of trichlorosilane are disposed one above the other, and the condenser and the receiver for dichlorosilane are disposed at the top of the column.

Method and apparatus for the preparation of dichlorosilane

A method for removing silane compounds from exhaust gases containing silanes comprises treating the silane containing gas with a metal alcholate in alcoholic solution to form a tetraalkoxysilane.

Method for removing silane compounds from silane-containing exhaust gases

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Rheinfelden, Germany

Reinhold Schork