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. 26, 2023
Filed:
Dec. 13, 2021
The Goodyear Tire & Rubber Company, Akron, OH (US);
George Jim Papakonstantopoulos, Medina, OH (US);
Brad Stephen Gulas, Fairlawn, OH (US);
Bruce Raymond Hahn, Hudson, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
This invention is based upon the unexpected discovery that silica containing tire tread rubber performance characteristics, such as hysteresis and payne effect, can be significantly improved using low levels of coupling agents and increasing silanization times and temperatures. The rubbers formulations made in accordance with this finding are of particular value for use in the treads of winter tires. Such rubber formulations will typically be made using a maximum level of about 7 phf of silica coupling agent and will more typically contain 3 phf to 6 phf of the silica coupling. A silanization time of at least 4 minutes or 5 minutes (within the range of 4 to 10 minutes) at a temperature of at least 150° C. and preferably 160° C. (within the range of 150° C. to 180° C.) will also be used.