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:
Sep. 21, 2004
Filed:
Oct. 29, 2002
James D. Burrington, Mayfield Village, OH (US);
Benny R. Richardson, Borger, TX (US);
Joseph W. Pialet, Euclid, OH (US);
Ann E. Wykoff, Port Arthur, TX (US);
Roger L. Sowerby, Concord Township, OH (US);
Kenneth W. Lee, Borger, TX (US);
Ralph E. Kornbrekke, Chagrin Falls, OH (US);
Ghebrehiwet N. Ghebremeskel, Beaumont, TX (US);
Kirk E. Davis, Chesterland, OH (US);
The Lubrizol Corporation, Wickliffe, OH (US);
Abstract
A coupler is described for use in carbon black filled rubber compositions. The coupler includes an amine group and a thiol group or a polysulfidic linkage. The coupler improves the interaction of the carbon black with the rubber as measured by a decrease in the tan delta at 60° C. while substantially maintaining the tan delta at 0° C.