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. 11, 2023
Filed:
Feb. 02, 2021
Evonik Operations Gmbh, Essen, DE;
Evonik Operations GmbH, Essen, DE;
Abstract
Process for preparing polysulfane silanes of the formula I(RO)RSi—R—S—R—SiR(OR)  I,by reaction of silane of the formula II(RO)RSi—R-Hal  II,with one or more metal sulfides of the formula IIIMe(SH)and/or MeS  III,optionally in the presence of one or more salts of monohydric or polyhydric acids,with the optional addition of y mol of sulfur in aqueous R—OH solution, wherein the water content of the aqueous R—OH solution is 5% to 40% by weight,wherein
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