Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1981-05-28

1983-01-18

Silverman, Stanley S.

Stock material or miscellaneous articles

Composite

Of fluorinated addition polymer from unsaturated monomers

252 6254, 360134, 427128, 427131, 428447, 428695, 428900, G11B 568, G11B 572

Patent

active

043692303

ABSTRACT:
A magnetic recording medium having a layer containing as a lubricant one or more organo-polysiloxane compounds having the following formula (I): ##STR1## (wherein each of A.sub.1 and A.sub.2 is independently --CH.sub.3, --CH.sub.2 --CH.sub.2 --(CF.sub.2).sub.q --CF.sub.3 or --R.sub.1 OCOR.sub.2 ; R.sub.1 is a divalent hydrocarbon residue having 1 to 5 carbon atoms; R.sub.2 is a monovalent hydrocarbon residue having from 7 to 21 carbon atoms; each of l, m and n is independently O or an integer ranging from 1 to 200; and each of p and q is independently O or an integer ranging from 1 to 12; provided that when at least one of the groups A.sub.1 and A.sub.2 is the group --R.sub.1 OCOR.sub.2, each l, m and n may be O and that, when each group A.sub.1 and A.sub.2 is one of the groups other than the group --R.sub.1 OCOR.sub.2, each l and m may be O and n is an integer ranging from 1 to 200).

REFERENCES:
patent: 4005242 (1977-01-01), Kopke et al.
patent: 4007313 (1977-02-01), Higuchi et al.
patent: 4007314 (1977-02-01), Higuchi et al.
patent: 4110503 (1978-08-01), Ogawa et al.
patent: 4131717 (1978-12-01), Himino et al.
patent: 4135016 (1979-01-01), Ogawa et al.
patent: 4171406 (1979-10-01), Yamaguchi et al.
patent: 4267206 (1981-05-01), Johnson

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