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. 21, 1997
Filed:
Sep. 11, 1995
Applicant:
Inventors:
Thomas E Childress, Newport, OH (US);
Mark P Bowman, Marietta, OH (US);
Assignee:
OSi Specialties, Inc., Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
556427 ; 556428 ;
Abstract
Sulfur-containing organosilicon compounds useful as coupling agents in vulcanizable rubbers to enhance various properties, including low rolling resistance for automobile tires, are prepared. Preferred compounds include .OMEGA., .OMEGA.'-bis (trialkoxysilylalkyl) polysulfides. In one embodiment, the reaction product of ethanolic sodium ethoxide and elemental sulfur is reacted with chloropropyltriethoxysilane. Alternatively, sodium metal is reacted with a mixture of ethanol and elemental sulfur, and then chloropropyltriethoxysilane. The use of sodium metal alcoholates provides an efficient and economical process.