Patent ID: 9284415
Filing Date: 2016-03-15
CPC Classification: C08F,C08J,C09D,H01B

Claim Text:
1. A process for oxygen-tailoring a polyethylene, the process comprising: (a) conveying a first polyethylene having a melt index ≦5.0, a high-load melt index ≧15, and an MWD ≦5.0 through mixing or extrusion apparatus having a feed zone, a melt-mixing zone downstream of the feed zone, and a melt zone downstream of the melt-mixing zone, wherein the temperature of the first polyethylene in the melt zone ranges from about 180° C. to about 300° C.; and (b) contacting the first polyethylene with an amount of an oxygen-containing gas having at least about 20.0 parts by weight oxygen per million per parts by weight of the first polyethylene (ppm (wt) O wherein the high-load melt index increases while the melt index remains substantially the same after the first polyethylene contacts the oxygen-containing gas.