MODIFIED POLYETHYLENE HAVING AN INCREASED CROSS-LINKING YIELD WHEN SUBJECTED TO GAMMA RAY RADIATION PROCESS FOR THE PREPARATION THEREOF

摘要

The present invention is directed to a process for the production of polyethylene having an increased cross-linking yield which comprises cross-linking a copolymer constituted by ethylene and an amount of butadiene lower than 5% by weight, in the presence of gamma ray radiations applied within a relatively short period of treating time,the polyethylene thus obtained being slightly modified by the very little amount of polybutadiene. In the above process, the amount of radiant energy required is reduced.