Magnetic recording medium
AssigneeNippon Zeon Co., Ltd.
InventorsEitaro Nakamura, Kotaro Hata
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Abstract
A magnetic recording medium consisting of a substrate and a magnetic layer formed thereon, said magnetic layer comprising (I) an epoxy group-containing vinyl chloride resin or [I'] both a vinyl chloride resin and an epoxy group-containing resin, [II] a perfluoroalkyl group-containing carboxylic or sulfonic acid compound, and [III] a magnetic powder.
Claims19
A magnetic recording medium consisting of a substrate and a magnetic layer formed thereon, said magnetic layer comprising an epoxy group-containing vinyl chloride resin, a perfluoroalkyl group-containing carboxylic or sulfonic acid and a magnetic powder,
- wherein the vinyl chloride content of said epoxy group-containing vinyl chloride resin is at least 20% by weight,
- wherein said epoxy group-containing vinyl chloride resin has an average degree of polymerization of 100 to 1,000, and
- wherein said epoxy group-containing vinyl chloride resin is present in an amount of 5 to 50 parts by weight for each 100 parts by weight of said magnetic powder.
A magnetic recording medium comprising a substrate and a magnetic layer formed thereon, said magnetic layer comprising a vinyl chloride resin, an epoxy group-containing resin, a perfluoroalkyl group-containing carboxylic or sulfonic acid and a magnetic powder,
- wherein said vinyl chloride resin has a vinyl chloride content of at least 20% by weight,
- wherein said vinyl chloride resin has an average degree of polymerization of 100 to 1,000, and
- wherein said epoxy group-containing resin and said vinyl chloride resin are present in a total amount of 5 to 50 parts by weight of said magnetic powder.
Dependencies are inferred from the claim text.