Lubricating agent and magnetic recording medium comprising the s

Details Lubricating agent and magnetic recording medium comprising the s Lubricating agent and magnetic recording medium comprising the s

1996-09-05

1998-06-02

Johnson, Jerry D.

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic -co- compound

508501, 560180, 560181, 560187, 360134, C10M10534, C10M10536, C07C 6966, G11B 578

Patent

active

057599688

ABSTRACT:
A lubricating agent contains at least one alkylene oxide derivative having an alkylene oxide group and an ester moiety or an ammonium salt moiety, which is represented by the following general formula (1), (2), (3) or (4):
R.sup.1 --O--(R.sup.2 O).sub.m --R.sup.3 --COO--R.sup.4 (1)
R.sup.1 O--(R.sup.2 O).sub.m --R.sup.3 --COONH.sub.3 --R.sup.4 (2)
R.sup.4 --OCO--R.sup.3 --O--(R.sup.2 O).sub.m --R.sup.3 --COO--R.sup.4 (3)
R.sup.4 --NH.sub.3 OCO--R.sup.3 --O--(R.sup.2 O).sub.m --R.sup.3 --COONH.sub.3 --R.sup.4 (4)
wherein R.sup.1 is a hydrocarbon group having 1 to 26 carbon atoms or a hydrogen atom, R.sup.2 is a hydrocarbon group having 1 to 6 carbon atoms, R.sup.3 is a hydrocarbon group having 1 to 26 carbon atoms, R.sup.4 is a hydrocarbon or fluorocarbon group having 1 to 26 carbon atoms, and m is from 1 to 12.
There is also disclosed a magnetic recording medium having a non-magnetic substrate and a magnetic layer provided on at least one surface of the substrate, wherein the magnetic layer has the lubricating agent in or on the magnetic layer.

REFERENCES:
patent: 2559521 (1951-07-01), Smith et al.
patent: 2886590 (1959-05-01), Montgomery et al.
patent: 3022356 (1962-02-01), Ver Nooy
patent: 3385882 (1968-05-01), Tullio
patent: 4735848 (1988-04-01), Kondo et al.
patent: 4766153 (1988-08-01), Casciani
patent: 5034559 (1991-07-01), Hickmann
patent: 5214216 (1993-05-01), Tohzuka et al.
Chemical Abstracts RN 139360-39-7 (date unknown).

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