Magnetic recording medium comprising magnetic particles, binder, and a cure agent of isocyanurate trimers, pentamers and heptamers

摘要

A magnetic recording medium comprising a non-magnetic base layer and an magnetic layer provided thereon which comprises a magnetic powder and a binder cured with a curing agent, wherein said binder has the hydroxyl group and said curing agent is a mixed polyvalent isocyanate compound comprising oligomers made of a diisocyanate monomer, wherein 50% by weight or more of said mixed compound comprises said oligomers which have polymerization degrees of 7 or less. The curing agent improves curing properties of the binder, and the magnetic recording medium produced therewith is excellent in sliding durability.