Patent ID: 8968628
Filing Date: 2015-03-03
Classification: A61L,B29C,C08J,C08K,C08L,Y10T

Abstract:
1. A method of making an oxidation resistant and wear resistant polymeric blend comprising the steps of: a) mixing a polymeric material with an antioxidant in the absence of a supercritical fluid, thereby forming a polymeric blend; b) consolidating the polymeric blend; and c) irradiating the consolidated polymeric blend with electron-beam radiation at a dose rate of about 5 to about 3,000 Mrad/minute to a total absorbed dose of about 50 kGy to about 1000 kGy, wherein the polymeric blend is irradiated at an elevated temperature that is above room temperature and below the melting point of the polymeric material and is not melted after irradiation, thereby forming an oxidation resistant and wear resistant polymeric blend.