Flexible magnetic recording media and a method using a...

Details Flexible magnetic recording media and a method using a... Flexible magnetic recording media and a method using a...

G - Physics

11

B

117/24.4

G11B 5/702 (2006.01)

Patent

CA 1319863

FLEXIBLE MAGNETIC RECORDING MEDIA AND A METHOD USING A STABLE FLUID REACTIVE DISPERSION TO PREPARE MAGNETIC RECORDING MEDIA Abstract Flexible magnetic recording media and stable-fluid, reactive dispersions of polymeric binder materials and particulate solids (either magnetic or non-magnetic) useful in preparing flexible or rigid magnetic recording media are provided. The use of a crosslinkable dispersing polymer comprised of a vinyl aromatic monomer and an ethylenically unsaturated monomer having hydroxyl functionality allows for magnetic media having both an excellent dispersion of finely divided magnetic particles, which improves the magnetic properties of the media, and an excellent set of mechanical characteristics, such as flexural modulus and tensile strength, of the magnetic media. The dispersing copolymer is used in an amount of at least about 5% by weight of the crosslinked binder mixture of which the crosslinkable dispersing polymer is a part.

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