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:
Apr. 14, 2026
Filed:
Dec. 14, 2020
Evonik Operations Gmbh, Essen, DE;
Julia Hermeke, Gerlingen, DE;
Helmut Dröge, Bornheim, DE;
Evgenij Lyagin, Hanau, DE;
Horst Mertsch, Rheinfelden, DE;
Elisabeth Bauer, Kleines Wiesental, DE;
Gert Smans, Mortsel, BE;
Evonik Operations GmbH, Essen, DE;
Abstract
A method for producing polysulphane-silanes of formula (I): (R)RSi—R—S—R—SiR(OR)by reacting at least one silane of formula (II): (R)RSi—R-Hal with M(SH)and/or MS and sulphur, in the presence of a phase transfer catalyst of formula (III), wherein at least one carrier-vapour distillation and/or ozone treatment is performed during or after the reaction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile