Ammonium carboxylate lubricant and magnetic recording medium usi

Details Ammonium carboxylate lubricant and magnetic recording medium usi Ammonium carboxylate lubricant and magnetic recording medium usi

1994-03-01

1995-10-10

Resan, Stevan A.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428408, 428421, 428694TF, 428694TP, 428694TC, 428900, 252 54, 252 58, 252 6254, G11B 500

Patent

active

054569800

ABSTRACT:
A lubricant comprising a multifunctional ammonium carboxylate represented by the general formula (1) and a magnetic recording medium comprising a non-magnetic support having a magnetic layer thereon, on the top of which a protective film is formed, wherein the lubricant is coated on the medium to form a lubricant film. ##STR1## where n is an integer of 2 to 4, Rf represents a non-branched, linear perfluoropolyether chain having an average molecular weight of 3000 to 10000, R.sup.1 and R.sup.2 represent hydrogen or an alkyl group, and R represents an organic group of two to four valences having one or more aromatic rings.

REFERENCES:
patent: 4912252 (1990-03-01), Dekura et al.
patent: 5091269 (1992-02-01), Kondo et al.
patent: 5128216 (1992-07-01), Ng

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