Minnesota Mining and Manufacturing Company

Colin F Norman

Christopher Miles Evans

Ramesh C Kumar

James G Carlson

Nelson T Rotto

James A Greczyna

Ruth M Erkkila

Mark R Buckingham

Timothy G Swales

A polymeric binder system useful for a magnetic recording medium, the polymeric binder system and comprising a hard resin component comprising a nonhalogenated vinyl copolymer and a soft resin component comprising a polyurethane having a phosphonate diester group. The binder system is useful for preparing the magnetic layer and/or backside coating of magnetic recording media, in order to provide media that demonstrate an improved combination of such as modulus, Tg, and smoothness.

Binder system for magnetic media

Magnetic recording medium having a binder system including a non

A binder composition suitable for use with magnetic media comprising:

Magnetic recording medium having a binder composition comprising

Magnetic recording medium with a binder resin of a starblock copolymer

Disclosed is a magnetic recording element comprising a support having coated on at least one major surface thereof a layer of a magnetic recording medium and a photosensitive layer which may be separate from or integral with the magnetic recording layer and which contains an infrared absorbing dye or its precursors. Information can be imparted to the photosensitive layer by imagewise exposure to actinic radiation which will either promote or inhibit generation or destruction of the infrared absorbing dye.

Magnetic recording materials provided with a photosensitive layer

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.

Magnetic recording medium having a metallic magnetic thin film layer, a

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Essex, United Kingdom

Colin F Norman