FR2491246B1 - - Google Patents

Info

Publication number
FR2491246B1
FR2491246B1 FR8117755A FR8117755A FR2491246B1 FR 2491246 B1 FR2491246 B1 FR 2491246B1 FR 8117755 A FR8117755 A FR 8117755A FR 8117755 A FR8117755 A FR 8117755A FR 2491246 B1 FR2491246 B1 FR 2491246B1
Authority
FR
France
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
FR8117755A
Other languages
French (fr)
Other versions
FR2491246A1 (fr
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.)
Ampex Corp
Original Assignee
Ampex 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 Ampex Corp filed Critical Ampex Corp
Publication of FR2491246A1 publication Critical patent/FR2491246A1/fr
Application granted granted Critical
Publication of FR2491246B1 publication Critical patent/FR2491246B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F299/00—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers
    • C08F299/02—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates
    • C08F299/022—Macromolecular compounds obtained by interreacting polymers involving only carbon-to-carbon unsaturated bond reactions, in the absence of non-macromolecular monomers from unsaturated polycondensates from polycondensates with side or terminal unsaturations
    • 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
    • G11B5/7026—Radiation curable polymers

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)
  • Polymerisation Methods In General (AREA)
FR8117755A 1980-09-22 1981-09-21 Milieu magnetique muri par irradiation et son procede de production Granted FR2491246A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18997980A 1980-09-22 1980-09-22

Publications (2)

Publication Number Publication Date
FR2491246A1 FR2491246A1 (fr) 1982-04-02
FR2491246B1 true FR2491246B1 (ja) 1984-12-28

Family

ID=22699560

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8117755A Granted FR2491246A1 (fr) 1980-09-22 1981-09-21 Milieu magnetique muri par irradiation et son procede de production

Country Status (11)

Country Link
EP (1) EP0060300A1 (ja)
JP (1) JPS5786131A (ja)
AU (1) AU546317B2 (ja)
BR (1) BR8106017A (ja)
CA (1) CA1167408A (ja)
DE (1) DE3137691C2 (ja)
FR (1) FR2491246A1 (ja)
GB (1) GB2084589B (ja)
IE (1) IE51908B1 (ja)
MX (1) MX158193A (ja)
WO (1) WO1982001099A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408020A (en) * 1982-06-28 1983-10-04 The B. F. Goodrich Company Curable polyurethanes
JPS5979431A (ja) * 1982-10-29 1984-05-08 Konishiroku Photo Ind Co Ltd 磁気記録媒体
EP0123081A3 (en) * 1983-03-09 1986-11-26 DeSOTO, INC. Coatings for magnetic recording structures and production thereof
US4507458A (en) * 1983-04-14 1985-03-26 Takeda Chemical Industries, Ltd. Urethane acrylate compositions
JPS6057531A (ja) * 1983-09-07 1985-04-03 Kao Corp 磁気記録媒体
DE3332564A1 (de) * 1983-09-09 1985-03-28 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
DE3418482A1 (de) * 1984-05-18 1985-11-21 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
US4594262A (en) * 1984-07-05 1986-06-10 Minnesota Mining And Manufacturing Company Electron beam adhesion-promoting treatment of polyester film base
US4543268A (en) * 1984-07-05 1985-09-24 Minnesota Mining And Manufacturing Company Electron-beam adhesion-promoting treatment of polyester film base for magnetic recording media
JPH0610856B2 (ja) * 1984-08-04 1994-02-09 ティーディーケイ株式会社 磁気記録媒体
US5028683A (en) * 1988-04-22 1991-07-02 Minnesota Mining And Manufacturing Company Electron-beam curable polyurethane compositions; and method
US5281482A (en) * 1988-04-22 1994-01-25 Minnesota Mining And Manufacturing Company Magnetic recording medium comprising magnetic particles and an electron beam curable polyurethane binder having segments derived from a specified unsaturated diol

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB829512A (en) * 1957-01-31 1960-03-02 Dow Chemical Co Method for cross-linking vinyl chloride polymers
US3104983A (en) * 1959-08-26 1963-09-24 Ibm Method of curing magnetic tape binder comprising butadiene-acrylonitrile and phenolicresin with subatomic radiation
DE1240934B (de) * 1965-09-15 1967-05-24 Basf Ag Bindemittel fuer ferromagnetische Pulver bei der Herstellung von Magnetogrammtraegern
DE2100037C3 (de) * 1971-01-02 1980-06-19 Hartmann, Job-Werner, Dr., 6700 Ludwigshafen Verfahren zur Herstellung von magnetischen Aufzeichnungsträgern
GB1431854A (en) * 1972-04-07 1976-04-14 Sony Corp Magnetic recording media and methods of making them
US4072592A (en) * 1974-05-20 1978-02-07 Mobil Oil Corporation Radiation curable coating
JPS5845474B2 (ja) * 1974-05-20 1983-10-11 モビル オイル コ−ポレ−シヨン 放射硬化性塗料
JPS5921909B2 (ja) * 1974-10-31 1984-05-23 東レ株式会社 放射線硬化性塗料組成物
US4152485A (en) * 1977-08-05 1979-05-01 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
CA1122999A (en) * 1978-05-01 1982-05-04 Alan D. Rousseau Photopolymerizable composition
FR2456963A1 (fr) * 1979-05-18 1980-12-12 Eastman Kodak Co Produit photographique muni d'une piste d'enregistrement magnetique et procede pour sa fabrication
US4273633A (en) * 1979-06-11 1981-06-16 Union Carbide Corporation Radiation curable dispersions containing high molecular weight essentially nonpolymerizable vinyl resins
FR2463477B1 (fr) * 1979-08-06 1988-04-08 Sony Corp Element d'enregistrement magnetique
JPS5625230A (en) * 1979-08-06 1981-03-11 Sony Corp Magnetic recording medium
FR2463478B1 (fr) * 1979-08-06 1986-07-18 Sony Corp Element d'enregistrement magnetique

Also Published As

Publication number Publication date
IE812187L (en) 1982-03-22
DE3137691A1 (de) 1982-05-27
EP0060300A1 (en) 1982-09-22
FR2491246A1 (fr) 1982-04-02
WO1982001099A1 (en) 1982-04-01
JPS5786131A (en) 1982-05-29
IE51908B1 (en) 1987-04-29
AU546317B2 (en) 1985-08-29
DE3137691C2 (de) 1984-05-17
GB2084589A (en) 1982-04-15
BR8106017A (pt) 1982-06-08
AU7554681A (en) 1982-04-01
MX158193A (es) 1989-01-16
GB2084589B (en) 1984-08-22
CA1167408A (en) 1984-05-15

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Legal Events

Date Code Title Description
ST Notification of lapse