PROCESS FOR OBTAINING MODIFIED POLYETHYLENES HAVING HIGH POLYETHYLENES AND CROSSLINKED MECHANICAL CHEMICAL AND ELECTRIC CHARACTERISTICS AND POLYETHYLENE OBTAINED THEREFROM

摘要

A polyethylene is disclosed that is modified by copolymerizing ethylene with a comonomer consisting of a minor quantity of a polycyclic polyene having at least three double bonds in the molecule, and preferably an endomethylenic bridge, so that it can be readily cross-linked under the influence of heat without the presence of an additive, but which still exhibits the characteristics of a conventional crystalline polyethylene.