JPS5674833A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5674833A
JPS5674833A JP15110679A JP15110679A JPS5674833A JP S5674833 A JPS5674833 A JP S5674833A JP 15110679 A JP15110679 A JP 15110679A JP 15110679 A JP15110679 A JP 15110679A JP S5674833 A JPS5674833 A JP S5674833A
Authority
JP
Japan
Prior art keywords
recording medium
urethane prepolymer
magnetic layer
magnetic
interpolyester
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
JP15110679A
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 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 JP15110679A priority Critical patent/JPS5674833A/en
Publication of JPS5674833A publication Critical patent/JPS5674833A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To increase the dispersing and filling properties of the magnetic powder as well as the smoothness and luster on the surface of the magnetic layer plus the adhesive performance to the substrate each, by using the nitrocellulose, the specific polyester and the urethane prepolymer each for the binder of the magnetic layer.
CONSTITUTION: The magnetic recording medium uses the nitrocellulose, the interpolyester resin containing the sulfonic acid metal base and the urethane prepolymer each for the binder components of the magnetic layer. The interpolyester is obtained by giving an interpolymerization of the component containing the sufonic acid metal base such as the 5-sodium sulfo-isophthalic acid or the like into the polyester resin. The urethane prepolymer is the straight-chain type low molecular weight urethane resin having the free isocyanante group at the both terminals each. Such recording medium has a higher residual magnetic flux density and higher square ratio than the conventional video tape, thus ensuring a high chroma output. Furthermore, the video S/N, color S/N and luster are excellent.
COPYRIGHT: (C)1981,JPO&Japio
JP15110679A 1979-11-20 1979-11-20 Magnetic recording medium Pending JPS5674833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15110679A JPS5674833A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15110679A JPS5674833A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5674833A true JPS5674833A (en) 1981-06-20

Family

ID=15511473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15110679A Pending JPS5674833A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5674833A (en)

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