Magnetic recording disk and process for manufacture thereof

Details Magnetic recording disk and process for manufacture thereof Magnetic recording disk and process for manufacture thereof

2006-05-16

2006-05-16

Resan, Stevan A. (Department: 1773)

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

C428S690000

Reexamination Certificate

active

07045215

ABSTRACT:
A magnetic recording disk has a high-adhesion lubricant layer that permits an operation at an extremely low level of flying height of 12 nm or less without troubles and which is capable of preventing the migration at a high-speed rotation, and comprises a substrate, a magnetic layer formed on the substrate, a protective layer formed on the magnetic layer and a lubricant layer formed on the protective layer, the lubricant layer containing a compound (A) of the general formula (I),wherein each of p and q is an integer of 1 or more, anda compound (B) having a perfluoropolyether main chain having two end moieties each of which contains a carbon atom or an oxygen atom to which a hydroxyl-containing hydrocarbon group that optionally contains ether bond(s) is bonded, and a process for the manufacture thereof is provided.

REFERENCES:
patent: 5750747 (1998-05-01), Furutani et al.
patent: 6348266 (2002-02-01), Liu et al.
patent: 11-22419 (1999-08-01), None

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