IT1145696B - Procedimento di preparazione di perle magnetiche di polimeri vinilaromatici - Google Patents

Procedimento di preparazione di perle magnetiche di polimeri vinilaromatici

Info

Publication number
IT1145696B
IT1145696B IT49421/80A IT4942180A IT1145696B IT 1145696 B IT1145696 B IT 1145696B IT 49421/80 A IT49421/80 A IT 49421/80A IT 4942180 A IT4942180 A IT 4942180A IT 1145696 B IT1145696 B IT 1145696B
Authority
IT
Italy
Prior art keywords
preparation procedure
vinylaromatic polymers
magnetic pearls
pearls
magnetic
Prior art date
Application number
IT49421/80A
Other languages
English (en)
Other versions
IT8049421A0 (it
Inventor
Marc Tricot
Jean Claude Daniel
Original Assignee
Rhone Poulenc Ind
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
Priority claimed from FR7921342A external-priority patent/FR2463778A1/fr
Priority claimed from FR8014309A external-priority patent/FR2485546B2/fr
Application filed by Rhone Poulenc Ind filed Critical Rhone Poulenc Ind
Publication of IT8049421A0 publication Critical patent/IT8049421A0/it
Application granted granted Critical
Publication of IT1145696B publication Critical patent/IT1145696B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/16—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
    • 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
    • C08F2/00—Processes of polymerisation
    • C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/083—Magnetic toner particles
    • 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
    • G11B5/706—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 composition of the magnetic material
    • G11B5/70626—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 composition of the magnetic material containing non-metallic substances
    • G11B5/70642—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 composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70647—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 composition of the magnetic material containing non-metallic substances iron oxides with a skin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Soft Magnetic Materials (AREA)
  • Polymerisation Methods In General (AREA)
IT49421/80A 1979-08-24 1980-08-04 Procedimento di preparazione di perle magnetiche di polimeri vinilaromatici IT1145696B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7921342A FR2463778A1 (fr) 1979-08-24 1979-08-24 Procede de preparation de perles magnetiques de polymeres vinylaromatiques
FR8014309A FR2485546B2 (fr) 1980-06-27 1980-06-27 Procede de preparation de perles magnetiques de polymeres vinylaromatiques

Publications (2)

Publication Number Publication Date
IT8049421A0 IT8049421A0 (it) 1980-08-04
IT1145696B true IT1145696B (it) 1986-11-05

Family

ID=26221329

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49421/80A IT1145696B (it) 1979-08-24 1980-08-04 Procedimento di preparazione di perle magnetiche di polimeri vinilaromatici

Country Status (6)

Country Link
US (1) US4339337A (it)
CH (1) CH649008A5 (it)
DE (1) DE3031790C2 (it)
GB (1) GB2057457B (it)
IT (1) IT1145696B (it)
NL (1) NL183405C (it)

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US4675113A (en) * 1984-11-28 1987-06-23 University Patents, Inc. Affinity chromatography using dried calcium alginate-magnetite separation media in a magnetically stabilized fluidized bed
DE3668722D1 (de) * 1985-06-26 1990-03-08 Toshiba Kawasaki Kk Magnetkern und herstellungsverfahren.
US4665107A (en) * 1986-03-21 1987-05-12 Koh-I-Noor Rapidograph, Inc. Pigment encapsulated latex aqueous colorant dispersions
US4891245A (en) * 1986-03-21 1990-01-02 Koh-I-Noor Rapidograph, Inc. Electrophoretic display particles and a process for their preparation
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FR2666443A1 (fr) * 1990-08-31 1992-03-06 Commissariat Energie Atomique Materiau a base de polymere conducteur electronique comprenant des particules magnetiques et son procede de fabrication.
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Also Published As

Publication number Publication date
IT8049421A0 (it) 1980-08-04
DE3031790C2 (de) 1983-01-13
US4339337A (en) 1982-07-13
DE3031790A1 (de) 1981-04-16
NL183405B (nl) 1988-05-16
CH649008A5 (fr) 1985-04-30
NL8004764A (nl) 1981-02-26
GB2057457B (en) 1983-12-21
NL183405C (nl) 1988-10-17
GB2057457A (en) 1981-04-01

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