Rigid magnetic recording media coating composition

Details Rigid magnetic recording media coating composition Rigid magnetic recording media coating composition

1983-12-27

1985-08-20

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of epoxy ether

360134, 360135, 360136, 427128, 427131, 428524, 428694, 428900, G11B 570

Patent

active

045364516

ABSTRACT:
A magnetic recording coating has a high density of magnetic particles uniformly dispersed in a thermoset resin binder with the dispersion applied as a thin coating onto a rigid substrate. The thermoset resin binder comprises a phenolic, an epoxy, and a styrene allylalcohol. The curing action of this coating is initiated by blocked acid catalysts. The material can be cured at a low temperature to produce a smooth, hard coating with an improved orientation ratio and without impairing the properties of the magnetic particles.

REFERENCES:
patent: 3955037 (1976-05-01), Marx
patent: 4003743 (1977-01-01), Akashi
patent: 4070522 (1978-01-01), Ogasa
patent: 4397751 (1983-08-01), Dickstein
patent: 4405684 (1983-09-01), Blumentritt

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