JPS56105329A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS56105329A
JPS56105329A JP473080A JP473080A JPS56105329A JP S56105329 A JPS56105329 A JP S56105329A JP 473080 A JP473080 A JP 473080A JP 473080 A JP473080 A JP 473080A JP S56105329 A JPS56105329 A JP S56105329A
Authority
JP
Japan
Prior art keywords
vinyl
acrylic ester
binder components
vinyl acetate
vinyl chloride
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
JP473080A
Other languages
Japanese (ja)
Inventor
Takezo Shimizu
Toshihiko Tanabe
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 JP473080A priority Critical patent/JPS56105329A/en
Publication of JPS56105329A publication Critical patent/JPS56105329A/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

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

Abstract

PURPOSE:To improve resistance to wear and heat of the magnetic layer, by using the vinyl chloride-vinyl acetate-acrylic ester-vinyl alcohol copolymer and the saturated thermoplastic polyester resin as binder components of magnetic powder. CONSTITUTION:3-50wt% trifunctional low-molecular weight isocyanate compound (C) is added to the composite where the vinyl chloride-vinyl acetate-acrylic ester- vinyl alcohol copolymer (A) of 200-600 polymerization degree consisting of 70- 80wt% vinyl chloride, 1-5wt% vinyl acetate, 2-10wt% acrylic ester, and 10- 20wt% vinyl alcohol and the saturated thermoplastic polyester resin (B) of 10,000- 30,000 molecular weight are mixed in the weight ratio of 9:1-1:9, thereby obtaining binder components. Next, the magnetic coating material obtained by dispersing these binder components and magnetic powder in the organic solvent is applied onto the substance and is dried to form magnetic layer.
JP473080A 1980-01-19 1980-01-19 Magnetic recording medium Pending JPS56105329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP473080A JPS56105329A (en) 1980-01-19 1980-01-19 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP473080A JPS56105329A (en) 1980-01-19 1980-01-19 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS56105329A true JPS56105329A (en) 1981-08-21

Family

ID=11592007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP473080A Pending JPS56105329A (en) 1980-01-19 1980-01-19 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56105329A (en)

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