Patent ID: 7754355
Filing Date: 2010-07-13
Classification: B32B,G11B

Abstract:
1. A magnetic recording medium comprising: a non-magnetic support and, in order thereabove; a radiation-cured layer cured by exposing a layer containing a radiation curing compound to radiation; and a magnetic layer comprising a ferromagnetic powder dispersed in a binder, the radiation curing compound having a C2 to C18 alkyl group, a C6 to C10 cyclic structure, two or more radiation curing functional groups per molecule, a molecular weight of 500 to 5,000 and a structure represented by formula (1) or formula (2): wherein formulas (1) and (2), R 1 and R 2 independently denote a C1 to C18 alkylene group, R 3 and R 4 independently denote a C2 to C18 alkyl group, Z denotes a tri- or tetra-valent residue derived from and X denotes a urethane bond residue or an ester bond residue, and the urethane bond is —NHCOOR and the ester bond residue is a carboxylic acid ester residue (—OCO—R or —COO—R), in which R denotes a monovalent organic group having a terminal ethylenically unsaturated group.