JPS5674827A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5674827A
JPS5674827A JP15110079A JP15110079A JPS5674827A JP S5674827 A JPS5674827 A JP S5674827A JP 15110079 A JP15110079 A JP 15110079A JP 15110079 A JP15110079 A JP 15110079A JP S5674827 A JPS5674827 A JP S5674827A
Authority
JP
Japan
Prior art keywords
magnetic layer
recording medium
magnetic recording
sulphonate group
binder
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
JP15110079A
Other languages
Japanese (ja)
Inventor
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 JP15110079A priority Critical patent/JPS5674827A/en
Publication of JPS5674827A publication Critical patent/JPS5674827A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To increase not only the smoothness but the adhesive performance of a magnetic layer, by using the vinyl chloride-vinyl acetate copolymer, copolymerized polyester containing metallic sulphonate group, urethane prepolymer and isocyanate compound as the binder of the magnetic layer.
CONSTITUTION: The magnetic recording medium uses the following materials as the binder of the magnetic layer: vinyl chloride-vinyl acetate copolymer of a low degree of polymerization; a copolymerized polyester resin containing a metallic sulphonate group which is obtained by copolymerization of component containing a metallic sulphonate group such as 5-sodium sulfo-isophthalate or the like into the polyester resin; the urethane prepolymer which is the straight chain type low molecular weight urethane resin having a free isocyanate group at both terminals; and the trifunctional low molecular weight isocyan the compound which is a reaction product of the 1-mol triol and the 3-mol diisocyanate. Thus the surface smoothness of the magnetic layer obtained and the adhesive performance to the substrate are improved to increase the video S/N of the magnetic recording medium.
COPYRIGHT: (C)1981,JPO&Japio
JP15110079A 1979-11-20 1979-11-20 Magnetic recording medium Pending JPS5674827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15110079A JPS5674827A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15110079A JPS5674827A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5674827A true JPS5674827A (en) 1981-06-20

Family

ID=15511329

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15110079A Pending JPS5674827A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5674827A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595424A (en) * 1982-07-01 1984-01-12 Sony Corp Magnetic recording medium
JPS61180927A (en) * 1985-02-06 1986-08-13 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPH03230317A (en) * 1990-02-02 1991-10-14 Nippon Zeon Co Ltd Magnetic recording medium
JPH03230316A (en) * 1990-02-02 1991-10-14 Nippon Zeon Co Ltd Magnetic recording medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595424A (en) * 1982-07-01 1984-01-12 Sony Corp Magnetic recording medium
JPH0159646B2 (en) * 1982-07-01 1989-12-19 Sony Corp
JPS61180927A (en) * 1985-02-06 1986-08-13 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPH0535483B2 (en) * 1985-02-06 1993-05-26 Matsushita Electric Ind Co Ltd
JPH03230317A (en) * 1990-02-02 1991-10-14 Nippon Zeon Co Ltd Magnetic recording medium
JPH03230316A (en) * 1990-02-02 1991-10-14 Nippon Zeon Co Ltd Magnetic recording medium

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