Alkylakrylatcopolymere, diese Copolymere enthaltende Aufzeichnungsträger und Verfahren zur Herstellung dieser Copolymere und Aufzeichnungsträger.

摘要

Magnetic recording media have been made with a new class of binder resins having the formula wherein the portion of the copolymer having the a subscript comprises 50 to 97 weight percent of the copolymer, the portion of the copolymer having the b subscript comprises 0 to 30 weight percent of the copolymer, the portions of the copolymer having the c and d subscripts combined comprise 0.1 to 20 weight percent of the copolymer, while d can be 0, R1 is an alkyl group selected from -CH3 and -(CH2 &rparstr& @@ CH3 wherein n1 = 1-10, R2 is an alkylene group which may be &lparstr& CH2 &rparstr& n1 or &lparstr& CH2 &rparstr& @@ &lparstr& @H &rparstr& &lparstr& CH2 &rparstr& @@ CH3, n2 = 1-4 and n3 = 0-4, R3 may be selected from -H and -CH3, n5 = 0 or 1, and X is a linking group which is stable under electron beam irradiation and may be, for example, R4 = C1-6 alkylene, for example, with the proviso that when d = 0, there is at least one additional polymer in the binder. The above resins in which d is greater than 0 are electron beam curable, and recording media can be produced by using such binder resins and curing them by electron beam irradiation.