Magnetic recording medium having radiation curable binder with alpha -methylstyrene unsaturation

摘要

The present invention provides magnetic recording media comprising a magnetizable layer and optionally a backside coating provided on a nonmagnetizable substrate. At least one of the magnetizable layer and the optional backside coating comprises a polymeric binder, wherein the polymeric binder is obtained from reactants comprising a free radical generator and a radiation curable polymer. The radiation curable polymer comprises a plurality of radiation curable, alpha -methylstyrene moieties of the formula <IMAGE>