JPS57141017A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57141017A
JPS57141017A JP2449881A JP2449881A JPS57141017A JP S57141017 A JPS57141017 A JP S57141017A JP 2449881 A JP2449881 A JP 2449881A JP 2449881 A JP2449881 A JP 2449881A JP S57141017 A JPS57141017 A JP S57141017A
Authority
JP
Japan
Prior art keywords
magnetic
alkyl
resin
copolymer
salt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2449881A
Other languages
Japanese (ja)
Inventor
Sadamu Kuze
Masayoshi Kawarai
Seiji Wataya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP2449881A priority Critical patent/JPS57141017A/en
Publication of JPS57141017A publication Critical patent/JPS57141017A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
    • G11B5/7023—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins

Landscapes

  • Lubricants (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To obtain a magnetic recording medium superior in magnetic conversion characteristics and etc., by making up a binder from a hemiadide compound or its salt of the copolymer between unsaturated hydrocarbon and maleic anhydride and one or more kinds of resin such as cellulose resin and a specific vinyl chloride-vinyl acetate copolymer. CONSTITUTION:0.5-10wt% half amide compound having 1,000-100,000 molecular weight indicated by formula (R1 is H or alkyl, and R2 is H, alkyl, alkenyl, alkoxy, phenyl, or benzyl, and R3 is H, alkyl, or alkenyl, and M is H, NH4, a metal giving a metallic salt soluble in an organic solvent, or organic amine residue, and (n) is an integer) or its salt is added to 100pts.wt. magnetic metallic powder together with resin such as cellulose resin, vinyl chloride-vinyl acetate copolymer having COOH or OH, and a vinyl chloride-vinylidene chloride copolymer to make up a binder. Thus, the magnetic coating material is prevented from thickening and gelling, and a magnetic tape superior in electromagnetic conversion characteristics and surface smoothness is obtained.
JP2449881A 1981-02-20 1981-02-20 Magnetic recording medium Pending JPS57141017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2449881A JPS57141017A (en) 1981-02-20 1981-02-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2449881A JPS57141017A (en) 1981-02-20 1981-02-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57141017A true JPS57141017A (en) 1982-09-01

Family

ID=12139839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2449881A Pending JPS57141017A (en) 1981-02-20 1981-02-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57141017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562117A (en) * 1983-05-26 1985-12-31 Konishiroku Photo Industry Co., Ltd. Magnetic recording medium and a process of fabricating such magnetic recording medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562117A (en) * 1983-05-26 1985-12-31 Konishiroku Photo Industry Co., Ltd. Magnetic recording medium and a process of fabricating such magnetic recording medium

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