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:
Jun. 02, 1992
Filed:
Sep. 25, 1989
Thomas W Starinshak, Wadsworth, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
The present invention relates to a process for treating a brass-plated steel wire comprising applying to the wire an aqueous zinc phosphate solution having a pH of from about 2 to about 3 and containing (1) a total of from about 28 to 32 grams per liter of phosphoric acid, (2) from about 8 to 11 grams per liter of free phosphoric acid, (3) from about 8 to 11 grams per liter of Zn.sup.+2 which may be derived from the group consisting of zinc oxide, zinc phosphate or mixtures thereof, and (4) wherein the mole ratio of total phosphoric acid to free phosphoric acid ranges from 2.5:1 to 4.0:1. In accordance with the present invention, the zinc phosphate coating on the brass-plated steel cord inhibits corrosion and adhesion of the wire to rubber after vulcanization is improved.