JPS57135426A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57135426A
JPS57135426A JP1979481A JP1979481A JPS57135426A JP S57135426 A JPS57135426 A JP S57135426A JP 1979481 A JP1979481 A JP 1979481A JP 1979481 A JP1979481 A JP 1979481A JP S57135426 A JPS57135426 A JP S57135426A
Authority
JP
Japan
Prior art keywords
vinyl
vinyl chloride
polyurethane resin
binder
radical
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
JP1979481A
Other languages
Japanese (ja)
Inventor
Masashi Somezawa
Yoshinobu Ninomiya
Akira Hashimoto
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP1979481A priority Critical patent/JPS57135426A/en
Publication of JPS57135426A publication Critical patent/JPS57135426A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/702—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent
    • G11B5/7021—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing a polyurethane or a polyisocyanate
    • G11B5/7022—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the bonding agent containing a polyurethane or a polyisocyanate containing mixtures of polyurethanes or polyisocyanates with other polymers

Landscapes

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

Abstract

PURPOSE:To elevate a characteristic, by applying a binder containing a vinyl chloride copolymer containing vinyl alcohol, and polyurethane resin having a -SO3N radical (M denotes an alkali metal) in a molecule, on a non-magnetic supporting body. CONSTITUTION:As for a vinyl chloride copolymer being 1 component of a binder, that which contains about 10-20wt% vinyl alcohol, and as a component of a copolymer, a compound containing a vinyl group which contains not only vinyl chloride and vinyl chlohol but also a vinyl ester of fatty acid such as vinyl acetate, methyl methacrylate, etc. is used. Polyurethane resin being another component of the binder contains a -SO3M radical (M denotes an alkali metal) in its molecule, and as far as M is concerned, Na, K, etc. are desirable. As for the radio of the -SO3M radical, 0.01-2mg equivalent/g is suitable. As for the mixing ratio of a vinyl chloride copolymer to polyurethane resin, 40-80% to 60-40% in the weight ratio are desirable. In this way, a product which is excellent in its durability is obtained.
JP1979481A 1981-02-13 1981-02-13 Magnetic recording medium Pending JPS57135426A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979481A JPS57135426A (en) 1981-02-13 1981-02-13 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979481A JPS57135426A (en) 1981-02-13 1981-02-13 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57135426A true JPS57135426A (en) 1982-08-21

Family

ID=12009245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979481A Pending JPS57135426A (en) 1981-02-13 1981-02-13 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57135426A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112924A1 (en) * 1982-07-01 1984-07-11 Sony Corporation Magnetic recording medium
JPS6083219A (en) * 1983-10-13 1985-05-11 Sekisui Chem Co Ltd Binder for magnetic recording body
JPS63157315A (en) * 1986-12-22 1988-06-30 Fuji Photo Film Co Ltd Magnetic recording medium
US5129479A (en) * 1989-12-12 1992-07-14 Toyota Jidosha Kabushiki Kaisha Suspension system for an engine and transmission assembly mounted transversely in a vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0112924A1 (en) * 1982-07-01 1984-07-11 Sony Corporation Magnetic recording medium
JPS6083219A (en) * 1983-10-13 1985-05-11 Sekisui Chem Co Ltd Binder for magnetic recording body
JPS63157315A (en) * 1986-12-22 1988-06-30 Fuji Photo Film Co Ltd Magnetic recording medium
US5129479A (en) * 1989-12-12 1992-07-14 Toyota Jidosha Kabushiki Kaisha Suspension system for an engine and transmission assembly mounted transversely in a vehicle

Similar Documents

Publication Publication Date Title
JPS57133521A (en) Magnetic recording medium
JPS5744227A (en) Magnetic recording medium
JPS57135426A (en) Magnetic recording medium
JPS5668928A (en) Magnetic recording medium
JPS5629839A (en) Magnetic recording medium
ES8207563A1 (en) Unsaturated polyester compositions and their use.
JPS57135428A (en) Magnetic recording medium
JPS55142068A (en) Adhesive composition
JPS5238202A (en) Magnetic recording body
JPS55115471A (en) Emulsion composition
JPS57113421A (en) Magnetic recording body
JPS5735540A (en) Deuterium substituted carboxylic acid, deuterium substituted carboxylic acid ester derivative, insecticide and acaricide containing deuterium substituted carboxylic acid ester derivative
JPS5765761A (en) Antistatic, acting ray-curable coat composition
JPS52128288A (en) Glucose isomerase solution
JPS57109804A (en) Ultraviolet-curing composition
JPS5570939A (en) Magnetic recording media
JPS5570938A (en) Magnetic recording media
JPS57210429A (en) Magnetic recording medium
JPS57210430A (en) Magnetic recording medium
JPS5566525A (en) Fractionation of compound having cis-type diol structure
JPS57210427A (en) Magnetic recording medium
JPS5570940A (en) Magnetic recording media
JPS5542325A (en) Magnetic recording medium
JPS54113693A (en) Ultraviolet-curing resin composition
JPS57109813A (en) Curing composition