Magnetic recording materials having great resistance to wear and

Details Magnetic recording materials having great resistance to wear and Magnetic recording materials having great resistance to wear and

1973-03-15

1976-10-19

Pianalto, Bernard D.

Stock material or miscellaneous articles

Metal continuous phase interengaged with nonmetal continuous...

428900, H01F 1002

Patent

active

039872327

ABSTRACT:
A magnetic recording element having greatly improved resistance to wear and tear is disclosed. This element includes in a magnetizable layer a carbonic acid ester lubricant such as ethyl cetyl carbonate, ethyl lauryl carbonate, didodecyl carbonate or phenyl cetyl carbonate. The lubricant can be present in an amount between 1 and 40% by weight of the binder, and advantageously about 20%. A typical binder is a copolymer of vinyl chloride with vinyl acetate, with or without polyurethane.

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