Patent ID: 7094472
Filing Date: 2006-08-22
Classification: C08J,Y10T

Abstract:
1. A method of producing a feed stock comprising a modified polyethylene for use in a process for forming an artifact, film or coating comprising the following steps: (i) selecting a polyethylene having a crystalline phase and an amorphous phase, and where said polyethylene is a high-density polyethylene with a density ranging from 0.945 to 0.970 g/cm (ii) imparting partial crosslinking, long chain branching and/or oxidation to the polyethylene by subjecting the polyethylene to a dose of ionizing radiation, where said dose is applied (a) when the polyethylene is at a temperature where both the crystalline and amorphous phases are present and (b) while the polyethylene is in an oxygen-containing atmosphere; and iii) adding one or more additives to the polyethylene after irradiation through a masterbatch.