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:
Jul. 23, 2002
Filed:
Jul. 13, 2001
Alfred Alig, Geiselbach-Omersbach, DE;
Christoph Batz-Sohn, Hanau-Mittelbuchen, DE;
Ulrich Deschler, Sailauf, DE;
Rudolf Michel, Freigericht, DE;
Jörg Münzenberg, Hanau, DE;
Raymund Sonnenschein, Mobile, AL (US);
Werner Will, Gelnhausen, DE;
Gerd Rainhard Zezulka, Hanau, DE;
Karl-Heinz Rützel, Hürth, DE;
Degussa AG, Hanau, DE;
Abstract
The invention relates to a process for the preparation of organosilylalkylpolysulfanes, of the general formula I (R R R SiR ) S (I) by reaction of organosilylalkylpolysulfanes of the general formula II (R R R SiR ) S (II) with an ionic sulfide of the general formula M S (III) and an organosilylalkyl halide of the general formula R R R SiR X (IV), the long-chain organosilylalkylpolysulfane of the general formula (II) and the organosilylalkyl halide of the general formula (IV) being initially introduced into the reaction vessel and the ionic sulfide of the general formula (III) being added to this solution in several portions.