Magnetic recording medium comprising magnetic particles, binder,

Details Magnetic recording medium comprising magnetic particles, binder, Magnetic recording medium comprising magnetic particles, binder,

1996-07-03

1998-05-12

Resan, Stevan A.

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

4284259, 428694BY, 428694BB, 428900, G11B 5702

Patent

active

057502617

ABSTRACT:
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.

REFERENCES:
patent: 4388245 (1983-06-01), Ueyanagi et al.
patent: 4868060 (1989-09-01), Ryoke et al.
patent: 5543226 (1996-08-01), Bobrich et al.

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