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:
Mar. 23, 2010
Filed:
Feb. 11, 2008
Wen-liang Hsu, Cuyahoga Falls, OH (US);
Leh-yeh Hsu, Legal Representative, Cuyahoga Falls, OH (US);
Kuo-chih Hua, Richfield, OH (US);
Shingo Futamura, Wadsworth, OH (US);
Wen-Liang Hsu, Cuyahoga Falls, OH (US);
Leh-Yeh Hsu, legal representative, Cuyahoga Falls, OH (US);
Kuo-Chih Hua, Richfield, OH (US);
Shingo Futamura, Wadsworth, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
This invention relates to the preparation of silica-containing rubber compositions which contain precipitated silica reinforcement and use of an oligomeric organomercaptosilane coupling agent containing a plurality of mercapto and silane moieties, and a minimal content, if any, of ethoxy groups and is thus substantially free of ethoxy groups. The interaction of the plurality of mercapto moieties, or groups, of such oligomeric organomercaptosilane with the diene-based elastomer can promote a significant viscosity build up of the uncured rubber composition in a preliminary non-productive mixing stage and therefore present significant rubber processing difficulties during the mixing of the rubber composition. A challenge is therefore presented for reducing such viscosity buildup for such uncured silica-containing rubber composition.