Process of making a magnetic recording media

Details Process of making a magnetic recording media Process of making a magnetic recording media

1980-05-15

1982-01-12

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427128, 427130, B05D 512

Patent

active

043105653

ABSTRACT:
A process for the manufacture of magnetic recording media, comprising a non-magnetic base and, applied thereto, one or more magnetizable layers, consisting of an anisotropic magnetic material finely dispersed in an organic binder, wherein the binder contains at least 40% of an aqueous ionomeric polyurethane dispersion which at 50.degree. C. forms films having a modulus of elasticity of from 50 to 700 N/mm.sup.2 and a DIN No. 53,157 pendulum hardness of from 20 to 110 s, the corresponding values of the modulus and hardness at room temperature being more than 3.5 times higher.

REFERENCES:
Angew Chem. /82 JA 1970 /Nr. 2.

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