Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1986-07-21

1987-05-19

Robinson, Ellis P.

Stock material or miscellaneous articles

Composite

Of polyamidoester

252 625Y, 427128, 428323, 428408, 428694, 428900, 428532, G11B 5702, G11B 571

Patent

active

046667849

ABSTRACT:
A magnetic recording medium having a magnetic layer of superior smoothness and excellent abrasion resistance and durability. The magnetic layer contains a polyurethane resin having a metal sulfonate group in the amount of 10-1000 equivalents/10.sup.6 g of the polymer; an ester of C.sub.10 -C.sub.18 fatty acid with butyl cellosolve and ferromagnetic fine particles.

REFERENCES:
patent: 4152485 (1979-05-01), Mizumura
patent: 4411957 (1983-10-01), Tokuda
patent: 4420531 (1983-12-01), Tokuda
patent: 4503198 (1985-03-01), Miyai
patent: 4521486 (1985-06-01), Ninomiya
patent: 4571364 (1986-02-01), Kasuga

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