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. 06, 2009
Filed:
Feb. 15, 2005
Wen-liang Hsu, Cuyahoga Falls, OH (US);
Shingo Futamura, Wadsworth, OH (US);
Kenneth Allen Bates, Brunswick, OH (US);
Adel Farhan Halasa, Bath, OH (US);
Kuo-chih Hua, Richfield, OH (US);
Bruce Raymond Hahn, Hudson, OH (US);
Wen-Liang Hsu, Cuyahoga Falls, OH (US);
Shingo Futamura, Wadsworth, OH (US);
Kenneth Allen Bates, Brunswick, OH (US);
Adel Farhan Halasa, Bath, OH (US);
Kuo-Chih Hua, Richfield, OH (US);
Bruce Raymond Hahn, Hudson, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
This invention relates to the preparation of a cis 1,4-polyisoprene rubber-rich rubber composition containing precipitated silica which has been pre-treated with a fatty alcohol and/or epoxidized soybean oil together with an organosilane containing polysulfide coupling agent and to tires having at least one component comprised of such rubber composition. The invention particularly relates to a process of (a) preparing a natural rubber-rich rubber composition comprised of pre-treating precipitated silica aggregates prior to blending with, or in the presence of, dry natural rubber with a fatty alcohol and/or epoxidized soybean oil to the exclusion of sulfur curative for the natural rubber, mixing an organalkoxysiloxane based polysulfide coupling agent with said dry natural rubber coincidentally with or subsequent to said precipitated silica aggregate fatty alcohol and/or epoxidized soybean oil pre-treatment to form a composite thereof, to the exclusion of sulfur curative, followed by (b) mixing the resulting rubber mixture with sulfur curative and (c) curing the resulting rubber composition.