| abstract |
A process is provided for preparing ultrahigh molecular weight, high abrasion resistant polyethylene compositions, wherein ultrahigh molecular weight polyethylene resin is admixed with about 0.01 to 0.1 weight percent organic peroxide and the admixture introduced at elevated temperatures into a melt shaping apparatus such as a ram extruder. The ultrahigh molecular weight polyethylene is cross-linked to still higher molecular weight compositions during melt shaping thereby resulting in a composition having superior abrasion resistance. |