JPS55139633A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS55139633A
JPS55139633A JP4643079A JP4643079A JPS55139633A JP S55139633 A JPS55139633 A JP S55139633A JP 4643079 A JP4643079 A JP 4643079A JP 4643079 A JP4643079 A JP 4643079A JP S55139633 A JPS55139633 A JP S55139633A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
magnetic recording
polyisocyanate
polyol
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
JP4643079A
Other languages
Japanese (ja)
Inventor
Masaaki Yasui
Masayoshi Kawarai
Seiji Wataya
Takeshi Matsuura
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 JP4643079A priority Critical patent/JPS55139633A/en
Publication of JPS55139633A publication Critical patent/JPS55139633A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve electromagnetic conversion characteristics, durability, etc., by using a copolymer of a vinyl chloride-vinyl propionate system, cellulose resin, polyol, and polyisocyanate as binder components of magnetic powder applied on a base.
CONSTITUTION: Fixed volumes of a copolymer of a vinyl chloride-vinyl propionate system, cellulose resin, polyol, and polyisocyanate are blended to obtain binder components, which are mixed and dispersed in an adequate organic solvent together with magnetic powder such as Fe2O3 containing Co. This magnetic coating is applied on a base of a polyester film, etc., and dried. Consequently, the registance to wear of the magnetic layer is improved and its thermal resistance and moisture resistance are both improved, so that a stable magnetic recording medium can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP4643079A 1979-04-16 1979-04-16 Magnetic recording medium Pending JPS55139633A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4643079A JPS55139633A (en) 1979-04-16 1979-04-16 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4643079A JPS55139633A (en) 1979-04-16 1979-04-16 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS55139633A true JPS55139633A (en) 1980-10-31

Family

ID=12746925

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4643079A Pending JPS55139633A (en) 1979-04-16 1979-04-16 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS55139633A (en)

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