Grafting without peroxides of homo- or copolymers of ethylene with a density lower than 0.930g/cm3, and the use of these graft copolymers in the preparation of ionomers and coupling agents

摘要

A process for peroxide-free grafting of ethylenically unsaturated carboxylic acids, carboxylic anhydrides and/or derivatives thereof onto homo- or copolymers of ethylene having densities of less than 0.930 g/cm3, the monomers to be grafted being employed in the concentration range of from 0.01 to 0.5 % by weight, and the grafting reaction being carried out in the temperature range of from 210 to 300 DEG C in conventional extruders or mixers in the absence of initiators which decompose to form free radicals. The graft copolymers are used to prepare ionomers and adhesion promoters.