JPS57210430A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57210430A
JPS57210430A JP9573281A JP9573281A JPS57210430A JP S57210430 A JPS57210430 A JP S57210430A JP 9573281 A JP9573281 A JP 9573281A JP 9573281 A JP9573281 A JP 9573281A JP S57210430 A JPS57210430 A JP S57210430A
Authority
JP
Japan
Prior art keywords
resin
liquid
normal temperature
groups
magnetic recording
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
JP9573281A
Other languages
Japanese (ja)
Inventor
Masaaki Yasui
Atsutaka Yamaguchi
Nobuaki Ogoshi
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 JP9573281A priority Critical patent/JPS57210430A/en
Publication of JPS57210430A publication Critical patent/JPS57210430A/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 reduce the used amount of an organic solvent, and to improve electromagnetic transducing characteristics, by using a polyvinyl butyral resin and a compound which is liquid at normal temperature together as a resin component for manufacturing a magnetic paint. CONSTITUTION:A resin component which consists of an acrylic resin (oligomerous resin with 500-20,000 mean molecular weight) which is liquid at normal temperature and has functional groups, capable of reacting with isocyanate groups such as hydroxyl groups and carboxyl groups, in a molecule, a multifunctional isocyanate compound which is liquid at normal temperature and has at least two free isocyanate groups in a molecule, and polyvinyl butyral is mixed with an organic solvent together with a ferromagnetic material, thus preparing a magnetic paint for magnetic recording media.
JP9573281A 1981-06-20 1981-06-20 Magnetic recording medium Pending JPS57210430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9573281A JPS57210430A (en) 1981-06-20 1981-06-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9573281A JPS57210430A (en) 1981-06-20 1981-06-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57210430A true JPS57210430A (en) 1982-12-24

Family

ID=14145640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9573281A Pending JPS57210430A (en) 1981-06-20 1981-06-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57210430A (en)

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