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. 30, 2004
Filed:
May. 30, 2000
Applicant:
Inventors:
William L. Hergenrother, Akron, OH (US);
Anthony J. Ramic, Cuyahoga Falls, OH (US);
James D. Ulmer, Akron, OH (US);
Assignee:
Bridgestone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 9/702 ; C08K 3/04 ;
U.S. Cl.
CPC ...
C08L 9/702 ; C08K 3/04 ;
Abstract
A polar surfactant, preferably organic, is disclosed to increase dispersion of reinforcing filler aggregates in rubber compositions. The surfactant acts on binders present in the reinforcing filler aggregates so that the surfactant associates with the water soluble binder on carbon black to increase carbon black dispersion. The polar surfactant has an hydrophilic-lipophilic balance value of about 3 to about 35. Rubber products using the composition and methods of making the composition are also disclosed.