Stock material or miscellaneous articles – Composite – Of fluorinated addition polymer from unsaturated monomers
Patent
1997-05-30
1999-02-09
Resan, Stevan A.
Stock material or miscellaneous articles
Composite
Of fluorinated addition polymer from unsaturated monomers
428457, 428694TF, 428694TC, 428694TB, 428900, G11B 571
Patent
active
058691863
ABSTRACT:
A magnetic recording medium excellent in running properties, durability and shelf stability. The magnetic recording medium has a magnetic layer of a ferromagnetic metal thin film formed over at least one surface of a non-magnetic base, with or without an inorganic protective layer formed on the magnetic layer. A surface layer consisting essentially of a salt of a phosphoric alkyl ester compound with an alkylamine compound, which is represented by the following formula (1) or (2), and a fluorine-containing carboxylic acid ester compound is provided on the magnetic layer or on the inorganic protective layer: ##STR1## where: R.sup.1 and R.sup.2, which may be the same or different from each other, are a hydrocarbon or fluorinated hydrocarbon group having from 2 to 26 carbon atoms; R.sup.A, R.sup.B, R.sup.C and R.sup.D are hydrogen, or a hydrocarbon or fluorinated hydrocarbon group having not more than 26 carbon atoms; and m is 1 or 2.
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Ishida Toshio
Sano Kunihiko
Usuki Kazuyuki
Fuji Photo Film Co. , Ltd.
Resan Stevan A.
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