JPS5674830A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5674830A
JPS5674830A JP15110379A JP15110379A JPS5674830A JP S5674830 A JPS5674830 A JP S5674830A JP 15110379 A JP15110379 A JP 15110379A JP 15110379 A JP15110379 A JP 15110379A JP S5674830 A JPS5674830 A JP S5674830A
Authority
JP
Japan
Prior art keywords
acetate copolymer
vinyl acetate
urethane prepolymer
magnetic layer
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
JP15110379A
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 JP15110379A priority Critical patent/JPS5674830A/en
Publication of JPS5674830A publication Critical patent/JPS5674830A/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, heat resistance and durability of the magnetic layer each, by using a vinyl chloride-vinyl acetate copolymer, the specific copolymerized polyester resin and the urethane prepolymer as the binder of the magnetic layer.
CONSTITUTION: The magnetic recording medium uses the vinyl chloride-vinyl acetate copolymer, a copolymerized polyester resin containing a metallic sulphonate group and a urethane prepolymer as the binder components of the magnetic layer. The vinyl chloride-vinyl acetate copolymer uses VYHH, VAGH, VMCH and the like. The polyester is obtained by copolymerization of 5-sodium sulfo-isophthalate into a polyester; and the urethane prepolymer is the straight chain type low molecular weight urethane resin which has a free isocyanate group at the both terminals. Such magnetic recording excels in the chroma output, video S/N and low- temperature stiffness property in comparison with the conventional video tape.
COPYRIGHT: (C)1981,JPO&Japio
JP15110379A 1979-11-20 1979-11-20 Magnetic recording medium Pending JPS5674830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15110379A JPS5674830A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15110379A JPS5674830A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5674830A true JPS5674830A (en) 1981-06-20

Family

ID=15511403

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15110379A Pending JPS5674830A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5674830A (en)

Cited By (1)

* 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

Cited By (1)

* 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

Similar Documents

Publication Publication Date Title
JPS57150130A (en) Magnetic recording medium
JPS567233A (en) Magnetic recording medium
JPS5674830A (en) Magnetic recording medium
JPS5774829A (en) Magnetic recording medium
JPS5674826A (en) Magnetic recording medium
JPS5324806A (en) Magnetic recording materia l
JPS57169926A (en) Magnetic recording medium
JPS5674827A (en) Magnetic recording medium
JPS56114129A (en) Magnetic recording medium
JPS56101648A (en) Magnetic recording medium
JPS5249805A (en) Magnetic recording medium
JPS57152523A (en) Magnetic recording medium
JPS55139635A (en) Magnetic recording medium
JPS57152528A (en) Magnetic recording medium
JPS57152527A (en) Magnetic recording medium
JPS5473005A (en) Magnetic recording medium
JPS56119928A (en) Magnetic recording medium
JPS551644A (en) Magnetic recording medium
JPS57152524A (en) Magnetic recording medium
JPS5674833A (en) Magnetic recording medium
JPS551645A (en) Magnetic recording medium
JPS5296505A (en) Magnetic recording medium
JPS57152525A (en) Magnetic recording medium
JPS55139632A (en) Magnetic recording medium
JPS644920A (en) Magnetic recording medium