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publicationDate 1989-04-11-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber US-4820581-A
titleOfInvention Magnetic recording medium
abstract A magnetic recording medium comprising a nonmagnetic support and a magnetic recording layer provided on said support, in which said magnetic recording layer comprises: n a ferromagnetic metal powder having a specific surface area of not less than 40 m 2 /g and n an abrasive having a Mohs' scale of hardness of not less than 6, n both being dispersed in a binder containing a polycarbonate-polyurethane.
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