Patent ID: 6376083
Filing Date: 2002-04-23
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium, comprising a magnetic layer containing ferromagnetic powder dispersed by a binder, the magnetic layer being located on a non-magnetic support member, wherein said binder comprises a polyurethane resin prepared by reacting a long chain diol having a weight average molecular weight of 800 to 5,000, a short chain diol having a weight average molecular weight of 50 to 500, and an organic diisocyanate, wherein said long chain diol is present in said polyurethane resin in an amount of 1 to 5 mol % and is represented by the following formula (1): where R represents a polyalkyleneglycol residual group,wherein said a short chain diol contains a cyclohexane ring represented by the following formulae (2):