Method of manufacturing a paint composite for magnetic films

Details Method of manufacturing a paint composite for magnetic films Method of manufacturing a paint composite for magnetic films

1979-08-13

1980-10-21

Edmundson, F. C.

Compositions

Magnetic

With wax, bitumen, resin, or gum

H01F 1002

Patent

active

042293120

ABSTRACT:
A method of manufacturing a paint composite for magnetic films wherein a mixture consisting of a magnetic powder, a polymer such as polyvinylbutyral, and a solvent is ground under a shear stress of 10-400 kg/cm.sup.2, and the ground mixture has a solvent, an epoxy resin and a phenol resin added thereto and is further ground. When a magnetic disk is produced using a paint which has been obtained by executing the first grinding under a shear stress of 10-400 kg/cm.sup.2 with a kneader or the like, it is endowed with excellent electric characteristics and surface flatness.

REFERENCES:
patent: 3198657 (1965-08-01), Kimball et al.
patent: 3788996 (1974-01-01), Thompson
patent: 3824128 (1974-07-01), Akashi et al.
patent: 4038375 (1977-09-01), Loewenberg et al.

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