DE3276600D1 - A magnetic recording coating composition - Google Patents

A magnetic recording coating composition

Info

Publication number
DE3276600D1
DE3276600D1 DE8282110212T DE3276600T DE3276600D1 DE 3276600 D1 DE3276600 D1 DE 3276600D1 DE 8282110212 T DE8282110212 T DE 8282110212T DE 3276600 T DE3276600 T DE 3276600T DE 3276600 D1 DE3276600 D1 DE 3276600D1
Authority
DE
Germany
Prior art keywords
coating composition
magnetic recording
recording coating
magnetic
composition
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.)
Expired
Application number
DE8282110212T
Other languages
English (en)
Inventor
Ming Ko
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3276600D1 publication Critical patent/DE3276600D1/de
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6216—Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
DE8282110212T 1982-02-26 1982-11-05 A magnetic recording coating composition Expired DE3276600D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/352,737 US4410440A (en) 1982-02-26 1982-02-26 Polyurethane magnetic disk coatings

Publications (1)

Publication Number Publication Date
DE3276600D1 true DE3276600D1 (en) 1987-07-23

Family

ID=23386279

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282110212T Expired DE3276600D1 (en) 1982-02-26 1982-11-05 A magnetic recording coating composition

Country Status (5)

Country Link
US (1) US4410440A (de)
EP (1) EP0087503B1 (de)
JP (1) JPS58147819A (de)
CA (1) CA1180178A (de)
DE (1) DE3276600D1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546044A (en) * 1982-04-22 1985-10-08 Konishiroku Photo Industry Co., Ltd. Magnetic recording medium
US4596739A (en) * 1985-02-11 1986-06-24 International Business Machines Corporation Rigid magnetic recording media
US4567096A (en) * 1985-03-21 1986-01-28 Piltingsrud Douglas H Hydrated alumina binder system
US4701562A (en) * 1986-06-25 1987-10-20 Union Carbide Corporation Process for the condensation of aldehydes
US5718978A (en) * 1995-01-25 1998-02-17 Kao Corporation Magnetic recording medium having a magnetic layer which includes magnetic particles, polurethane resin, vinyl chloride copolymer, and an amine compound

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906548A1 (de) * 1968-02-12 1969-09-18 Fuji Photo Film Co Ltd Magnetisches Aufzeichnungsmedium
CA1028785A (en) * 1972-05-01 1978-03-28 John Fech (Jr.) Coating compositions using benzophenone oxime blocked urethane pre-polymers
CA1003707A (en) * 1973-01-02 1977-01-18 Duane G. Heikkinen Fine-metal-particle-based magnetic recording medium of improved environmental stability
US3929659A (en) * 1973-06-18 1975-12-30 Du Pont Crosslinked rubber/resin binders for chromium dioxide recording members
US3926826A (en) * 1973-06-18 1975-12-16 Du Pont Magnetic tape binder from a polyurethane, a polyol and an isocyanate
DE2442762C2 (de) * 1974-09-06 1983-02-24 Basf Ag, 6700 Ludwigshafen Schichtmagnetogrammträger mit Polyurethanelastomer-Bindemitteln in der Magnetschicht
US4020236A (en) * 1975-07-22 1977-04-26 Fuji Photo Film Co., Ltd. Process for producing a magnetic material and magnetic recording medium containing the same
US4092256A (en) * 1976-12-22 1978-05-30 Goodson Keith S Magnetic coating compositions
US4152485A (en) * 1977-08-05 1979-05-01 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPS6034167B2 (ja) * 1978-09-11 1985-08-07 富士写真フイルム株式会社 磁気記録媒体
US4286022A (en) * 1979-01-19 1981-08-25 Minnesota Mining And Manufacturing Company Coating of fine particles in polyurethane block copolymer binder

Also Published As

Publication number Publication date
US4410440A (en) 1983-10-18
EP0087503B1 (de) 1987-06-16
EP0087503A3 (en) 1985-07-31
JPS58147819A (ja) 1983-09-02
CA1180178A (en) 1985-01-02
EP0087503A2 (de) 1983-09-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee