JPS52142756A - Nitrocellulose and magnetic recording media - Google Patents

Nitrocellulose and magnetic recording media

Info

Publication number
JPS52142756A
JPS52142756A JP5908476A JP5908476A JPS52142756A JP S52142756 A JPS52142756 A JP S52142756A JP 5908476 A JP5908476 A JP 5908476A JP 5908476 A JP5908476 A JP 5908476A JP S52142756 A JPS52142756 A JP S52142756A
Authority
JP
Japan
Prior art keywords
nitrocellulose
magnetic recording
recording media
aombined
running
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.)
Granted
Application number
JP5908476A
Other languages
Japanese (ja)
Other versions
JPS5615046B2 (en
Inventor
Yuichi Kubota
Norifumi Kajimoto
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP5908476A priority Critical patent/JPS52142756A/en
Priority to US05/790,914 priority patent/US4115290A/en
Priority to NL7704705A priority patent/NL167716C/en
Priority to DE19772719285 priority patent/DE2719285A1/en
Publication of JPS52142756A publication Critical patent/JPS52142756A/en
Publication of JPS5615046B2 publication Critical patent/JPS5615046B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
    • C08L1/08—Cellulose derivatives
    • C08L1/16—Esters of inorganic acids
    • C08L1/18—Cellulose nitrate, i.e. nitrocellulose
    • 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
    • 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
    • G11B5/7023—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 polyesters, polyethers, silicones, polyvinyl resins, polyacrylresins or epoxy resins
    • 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
    • G11B5/7025—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 cellulosic derivates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: A nitrocellulose capable of improving the wear resistance, frictional characteristics on running when aombined with a polyurethane compound, etc., prepared by replacing isopropyl alcohol contained in the nitrocellulose with a resin.
COPYRIGHT: (C)1977,JPO&Japio
JP5908476A 1976-05-24 1976-05-24 Nitrocellulose and magnetic recording media Granted JPS52142756A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5908476A JPS52142756A (en) 1976-05-24 1976-05-24 Nitrocellulose and magnetic recording media
US05/790,914 US4115290A (en) 1976-05-24 1977-04-26 Magnetic recording medium
NL7704705A NL167716C (en) 1976-05-24 1977-04-29 METHOD FOR MANUFACTURING MAGNETIC TAPES
DE19772719285 DE2719285A1 (en) 1976-05-24 1977-04-29 Magnetic recording medium prodn. - from nitrocellulose compsn. in which a polymer replaces isopropanol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5908476A JPS52142756A (en) 1976-05-24 1976-05-24 Nitrocellulose and magnetic recording media

Publications (2)

Publication Number Publication Date
JPS52142756A true JPS52142756A (en) 1977-11-28
JPS5615046B2 JPS5615046B2 (en) 1981-04-08

Family

ID=13103114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5908476A Granted JPS52142756A (en) 1976-05-24 1976-05-24 Nitrocellulose and magnetic recording media

Country Status (3)

Country Link
JP (1) JPS52142756A (en)
DE (1) DE2719285A1 (en)
NL (1) NL167716C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150129A (en) * 1981-03-12 1982-09-16 Fuji Photo Film Co Ltd Magnetic recording medium
WO1982003399A1 (en) * 1981-04-02 1982-10-14 Ohtake Etsuo Nitrocellulose composition and process for its preparation

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698719A (en) * 1980-01-10 1981-08-08 Fuji Photo Film Co Ltd Magnetic recording medium
JPS6042804A (en) * 1983-08-18 1985-03-07 Hitachi Maxell Ltd Magnetic recording medium and magnetic powder for recording medium
US5180616A (en) * 1986-06-23 1993-01-19 Hitachi, Ltd. Hard disk magnetic recording medium comprising magnetic powder and a binder and having a specified magnetic layer thickness and surface roughness
DE3720717C2 (en) * 1986-06-23 1994-02-17 Hitachi Ltd Magnetic coating agent, its manufacture and magnetic recording media using the coating agent

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458458A (en) * 1965-08-20 1969-07-29 Ici Ltd Process for the preparation of vinyl polymer impregnated nitrocellulose

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458458A (en) * 1965-08-20 1969-07-29 Ici Ltd Process for the preparation of vinyl polymer impregnated nitrocellulose

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150129A (en) * 1981-03-12 1982-09-16 Fuji Photo Film Co Ltd Magnetic recording medium
JPH0424767B2 (en) * 1981-03-12 1992-04-28 Fuji Photo Film Co Ltd
WO1982003399A1 (en) * 1981-04-02 1982-10-14 Ohtake Etsuo Nitrocellulose composition and process for its preparation

Also Published As

Publication number Publication date
DE2719285B2 (en) 1980-03-20
DE2719285C3 (en) 1980-11-13
NL167716B (en) 1981-08-17
NL167716C (en) 1982-01-18
JPS5615046B2 (en) 1981-04-08
NL7704705A (en) 1977-11-28
DE2719285A1 (en) 1978-04-13

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