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:
Jan. 14, 2003
Filed:
Sep. 10, 2001
Applicant:
Inventors:
Roland Krafczyk, Rheinfelden, DE;
Ulrich Deschler, Sailauf, DE;
Rudolf Michel, Freigericht, DE;
Christoph Batz-Sohn, Hanau-Mittelbuchen, DE;
Assignee:
Degussa AG, Dusseldorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F 7/08 ;
U.S. Cl.
CPC ...
C07F 7/08 ;
Abstract
Process for the production of yellow bis(3-[triethoxysilyl]propyl)polysulfane with an average sulfur chain length of less than 4 and an iodine colour value of ≦10 mg iodine/100 ml, wherein neutral chloropropyltriethoxysilane is mixed with chloropropyltrichlorosilane and then reacted with sodium sulfide (Na S) and sulfur, disodium tetrasulfide (Na S ) and Na S or disodium trisulfide (Na S ) and Na S in ethanol.