JPS57152528A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57152528A
JPS57152528A JP3840181A JP3840181A JPS57152528A JP S57152528 A JPS57152528 A JP S57152528A JP 3840181 A JP3840181 A JP 3840181A JP 3840181 A JP3840181 A JP 3840181A JP S57152528 A JPS57152528 A JP S57152528A
Authority
JP
Japan
Prior art keywords
acetate copolymer
vinyl acetate
vinyl chloride
vinyl
recording medium
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
JP3840181A
Other languages
Japanese (ja)
Inventor
Kosaburo Sato
Shozo Ide
Akira Okazoe
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 JP3840181A priority Critical patent/JPS57152528A/en
Publication of JPS57152528A publication Critical patent/JPS57152528A/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

Abstract

PURPOSE:To improve the dispersibility, packing property, etc., of magnetic powder by using a vinyl chloride-vinyl acetate copolymer having epoxy groups and a vinyl chloride-vinyl acetate copolymer having carboxyl groups in combination as binder components. CONSTITUTION:Magnetic paint which contains metallic magnetic powder, and a vinyl chloride-vinyl acetate copolymer having epoxy groups and a vinyl chloride- vinyl acetate copolymer having carboxyl groups as binder components is applied over a base. The preferable weight ratio of said copolymers in use is 9:1-1:9. Further, an isocyanate compound having a low molecular weight such as 2,4- tolylenediisocyanate is contained as a binder component to further improve the wear resistance of a magnetic layer.
JP3840181A 1981-03-16 1981-03-16 Magnetic recording medium Pending JPS57152528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3840181A JPS57152528A (en) 1981-03-16 1981-03-16 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3840181A JPS57152528A (en) 1981-03-16 1981-03-16 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57152528A true JPS57152528A (en) 1982-09-20

Family

ID=12524265

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3840181A Pending JPS57152528A (en) 1981-03-16 1981-03-16 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57152528A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123017A (en) * 1984-11-20 1986-06-10 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS6226630A (en) * 1985-07-27 1987-02-04 Konishiroku Photo Ind Co Ltd Magnetic recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123017A (en) * 1984-11-20 1986-06-10 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPH0518171B2 (en) * 1984-11-20 1993-03-11 Matsushita Electric Ind Co Ltd
JPS6226630A (en) * 1985-07-27 1987-02-04 Konishiroku Photo Ind Co Ltd Magnetic recording medium

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