Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1983-10-03
1985-07-02
Robinson, Ellis P.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
360134, 360135, 360136, 427128, 427131, 427132, 428420, 428421, 428422, 428694, 428695, 428900, G11B 572
Patent
active
045268339
ABSTRACT:
A magnetic recording medium protected by a very thin, composite low surface energy covering is disclosed. The covering comprises a primer layer of a polymerized phosphorylated monomer or oligomer and an outer lubricant layer of perfluoropolyether polymer. The two layers may be polymerized in situ. The primer layer is made from monomers such as phosphorylated bis[4-methacryloyloxyhydroxypropylcarbamato-cyclohexyl]methane. The outer layer is made from a polymerizable perfluoropolyether monomer such as ##STR1## The composite low surface energy covering is especially useful for providing lubricity and corrosion resistance to a metallic thin-film magnetic recording coating.
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Burguette Mario D.
Foss George D.
Little Douglas B.
Minnesota Mining and Manufacturing Company
Robinson Ellis P.
Sell Donald M.
Smith James A.
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