Magnetic recording medium containing a copolymer having an anion

Details Magnetic recording medium containing a copolymer having an anion Magnetic recording medium containing a copolymer having an anion

1989-11-21

1992-03-24

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

4284246, 4284259, 428694, 428900, G11B 2300

Patent

active

050987852

ABSTRACT:
A medium recording medium is provided which has a plurality of coated layers on a nonmagnetic base support, a least one of said coated layer containing a modified copolymer having introduced therein an anionic functional group which forms an intramolecular salt.

REFERENCES:
patent: 4626469 (1986-12-01), Yamaguchi et al.
patent: 4745017 (1988-05-01), Miyoshi et al.
patent: 4770941 (1988-09-01), Imai et al.
patent: 4839225 (1989-06-01), Matsufuji et al.
patent: 4880692 (1989-11-01), Ryoke et al.

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