JPS5674824A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS5674824A
JPS5674824A JP15109779A JP15109779A JPS5674824A JP S5674824 A JPS5674824 A JP S5674824A JP 15109779 A JP15109779 A JP 15109779A JP 15109779 A JP15109779 A JP 15109779A JP S5674824 A JPS5674824 A JP S5674824A
Authority
JP
Japan
Prior art keywords
metal base
sulfonic acid
magnetic layer
isocyanate compound
acid metal
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
JP15109779A
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 JP15109779A priority Critical patent/JPS5674824A/en
Publication of JPS5674824A publication Critical patent/JPS5674824A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase not only the surface smoothness but the adhesive performance to the substrate for the magnetic layer, by using the copolymerized polyester containing the sulfonic acid metal base, urethane prepolymer and trifunctional low molecular weight isocyanate compound in combination as the magnetic layer binder.
CONSTITUTION: The magnetic recording medium uses the following material for the magnetic layer binder: the copolymerized polyester resin containing the sulfonic acid metal base, i.e., the resin which is obtained by giving the polymerization of the component containing the sulfonic acid metal base such as the 5-sodium sulfo-isophthalic acid or the like into the polyester resin; the urethane prepolymer; and the trifunctional low molecular weight isocyanate compound each. This isocyanate compound contains the trifunctional isocyanate group which is usually obtained through a reaction between the 1mol triol and the 3mol diisocyanate.
COPYRIGHT: (C)1981,JPO&Japio
JP15109779A 1979-11-20 1979-11-20 Magnetic recording medium Pending JPS5674824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15109779A JPS5674824A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15109779A JPS5674824A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5674824A true JPS5674824A (en) 1981-06-20

Family

ID=15511263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15109779A Pending JPS5674824A (en) 1979-11-20 1979-11-20 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5674824A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841436A (en) * 1981-09-03 1983-03-10 Tdk Corp Magnetic recording medium
WO1983001528A1 (en) * 1981-10-15 1983-04-28 Nakajima, Kaoru Magnetic recording medium
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841436A (en) * 1981-09-03 1983-03-10 Tdk Corp Magnetic recording medium
WO1983001528A1 (en) * 1981-10-15 1983-04-28 Nakajima, Kaoru Magnetic recording medium
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

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