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:
Oct. 19, 1993
Filed:
Jun. 24, 1991
David A Benko, Munroe Falls, OH (US);
Fredrick L Magnus, Mogadore, OH (US);
Zalman Ronen, Akron, OH (US);
Walter H Waddell, Pittsburgh, PA (US);
Robert W Strozier, Houston, TX (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
Fatty acids commonly found in bulk elastomers such as natural rubber and certain synthetic polymers are deactivated by adding a metal oxide to the masterbatch stage where the metal oxide is selected from the group consisting of aluminum oxide, calcium oxide or mixtures thereof. Amounts range from about 0.1 phr to about 5 phr of calcium oxide, about 0.1 to about 7 phr of aluminum oxide, or about 0.5 to about 5 phr of aluminum oxide plus about 0.05 to 1 phr of calcium oxide. Deactivation of fatty acids improves tack and cure properties.