The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 06, 2012
Filed:
Jul. 24, 2009
Karsten Korth, Grenzach-Wyhlen, DE;
Ingo Kiefer, Schwörstadt-Dossenbach, DE;
Alfred Alig, Geiselbach-Omersbach, DE;
Ulrich Deschler, Sailauf, DE;
Helmut Droege, Qingdao, CN;
Sefan Koenigstein, Bochum, DE;
Stephanie Schwan, Langen, DE;
Karsten Korth, Grenzach-Wyhlen, DE;
Ingo Kiefer, Schwörstadt-Dossenbach, DE;
Alfred Alig, Geiselbach-Omersbach, DE;
Ulrich Deschler, Sailauf, DE;
Helmut Droege, Qingdao, CN;
Sefan Koenigstein, Bochum, DE;
Stephanie Schwan, Langen, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
The invention relates to a process for preparing organosilanes of the general formula I by reacting (haloorganyl)alkoxysilane of the formula II with hydrous alkali metal hydrogensulphide, sulphur and alkali metal carbonate in alcohol, wherein the molar (haloorganyl)alkoxysilane of the formula II to alkali metal hydrogensulphide ratio is between 1:0.4 and 1:0.75, and the molar alkali metal hydrogensulphide to alkali metal carbonate ratio is between 1:0.5 and 1:1.5.