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:
Aug. 10, 2010
Filed:
May. 28, 2008
Manuel Friedel, Zurich, CH;
Susann Witzsche, Rheinfelden, DE;
Manuel Friedel, Zurich, CH;
Susann Witzsche, Rheinfelden, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
Process for preparing alkylpolyether-substituted mercaptosilanes of the general formula I,(X)(X')(X″)Si(—R—SR)  (I)and a Hazen colour number of ≦250 mg Pt—Co/L by reacting compounds of the general formula II,(X′)(X″)Si(—R—SR)  (II)with m equivalents of the compounds of the general formula III,H—O—((CR)—O—)Alk  (III)using a proton-donating co-catalyst and, if desired, a further catalyst, and separating off liberated X′—H from the reaction mixture.