Synthetic lubricant for lubricating thin film and magnetic recor

Details Synthetic lubricant for lubricating thin film and magnetic recor Synthetic lubricant for lubricating thin film and magnetic recor

1988-03-28

1989-10-03

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

427131, 428694, 428900, G11B 564

Patent

active

048716251

ABSTRACT:
A synthetic lubricant for lubricating a thin film containing a phosphonitrile ester obtained by cyclic polymerization or ring opening polymerization and represented by the following general formula (I): ##STR1## wherein n represents 3 to 10, and Rf and Rf' represent one or two groups selected from the following groups: ##STR2## wherein l represents 3 to 250, m 1 to 250, and Y one selected from the group consisting of F--, CF.sub.3 --, C.sub.2 F.sub.5 --, CF.sub.3 O--, C.sub.2 F.sub.5 O-- and C.sub.3 F.sub.7 O--; and a magnetic recording medium coated with this lubricant.

REFERENCES:
patent: 4018967 (1977-04-01), Roller
patent: 4536444 (1985-08-01), Sumiya
patent: 4613548 (1986-09-01), Lum

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