Stock material or miscellaneous articles – Composite – Of polyisocyanurate
Patent
1990-06-21
1993-01-12
Thibodeau, Paul J.
Stock material or miscellaneous articles
Composite
Of polyisocyanurate
428447, 428450, 428694, 428695, 428900, G11B 500
Patent
active
051789540
ABSTRACT:
A two-layer protective coating covers a metallic thin film magnetic recording medium of a magnetic recording element. The two-layer protective coating comprises a primer layer proximal to the metallic thin film magnetic recording medium. The primer layer comprises an amino functional alkoxy silane and a copolymerizable monomer. The copolymerizable monomer comprises a plurality of vinyl groups. The two-layer protective coating also comprises a lubricant layer distal from the metallic thin film magnetic recording medium. The lubricant layer comprises a functional perfluoropolyether.
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Norman Colin F. W.
Swales Timothy G. E.
Griswold Gary L.
Kagan David B.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Resan Stevan A.
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