Polymeric perfluoro polyether phosphate lubricant topcoat

Details Polymeric perfluoro polyether phosphate lubricant topcoat Polymeric perfluoro polyether phosphate lubricant topcoat

1997-03-17

1999-02-23

Resan, Stevan A.

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

428408, 428422, 428694TF, 428694TC, 427131, G11B 571

Patent

active

058741690

ABSTRACT:
The degree of bonding of a perfluoro polyether lubricant topcoat to a magnetic recording medium is improved by forming a polymeric phosphate derivative thereof. In an embodiment of the present invention, a perfluoro polyether phosphate polymer is formed with a molecular weight of about 1000 to about 5000, and applied to a magnetic recording medium to achieve a bonded lube ratio in excess of 0.9.

REFERENCES:
patent: 4536444 (1985-08-01), Somiya et al.
patent: 5069973 (1991-12-01), Saito et al.
patent: 5091249 (1992-02-01), Nishikawa et al.
patent: 5112662 (1992-05-01), Ng
patent: 5128216 (1992-07-01), Ng

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