Magnetic recording medium and process

Details Magnetic recording medium and process Magnetic recording medium and process

1979-11-28

1981-09-15

Pianalto, Bernard D.

Stock material or miscellaneous articles

Composite

Of polyamidoester

427128, 427130, 4284237, 428482, 428522, 428694, 428900, B32B 2740

Patent

active

042898285

ABSTRACT:
A magnetic recording medium made by coating a base with a magnetic coating material which is a dispersion of magnetic particles in a binder of synthetic resins using a polyfunctional aromatic isocyanate as a curing agent, characterized by the addition of a sorbitan stearate type surface active agent which has a sorbitol derivative in the hydrophilic group. The present magnetic recording medium has superior mechanical properties, especially a superior running quality as well as superior electromagnetic properties.

REFERENCES:
patent: 3460984 (1969-08-01), Bisschops et al.

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