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. 21, 2016
Filed:
Dec. 05, 2011
Brian H. Thomas, Auburndale, FL (US);
Dean M. Acker, Naples, FL (US);
Ray Gsell, Winona Lake, IN (US);
Norman Stark, Winterthur, CH;
Brian H. Thomas, Auburndale, FL (US);
Dean M. Acker, Naples, FL (US);
Ray Gsell, Winona Lake, IN (US);
Norman Stark, Winterthur, CH;
Zimmer, Inc., Warsaw, IN (US);
Abstract
The present disclosure is directed to polymer compositions having one or more antioxidants providing high crosslink density and improved oxidation resistance to the polymer composition and methods for making same. Such polymer compositions can be advantageously used to make orthopedic implants. The disclosure also provides methods for selecting antioxidants providing desirable properties to the polymer composition. In one embodiment, a measure of OIT can be used to select the antioxidant and antioxidant blend. In another embodiment, measurements of OIT and OI-rate can be used to select the one or more antioxidants. In an other embodiment, the product of OIT and crosslink density can be calculated to predict wear resistance and oxidation resistance of a polymer composition including one or more antioxidants.