GB1190417A - Production of Magnetic Recording Media - Google Patents

Production of Magnetic Recording Media

Info

Publication number
GB1190417A
GB1190417A GB3431467A GB3431467A GB1190417A GB 1190417 A GB1190417 A GB 1190417A GB 3431467 A GB3431467 A GB 3431467A GB 3431467 A GB3431467 A GB 3431467A GB 1190417 A GB1190417 A GB 1190417A
Authority
GB
United Kingdom
Prior art keywords
styrene
methylstyrene
blocks
copolymer
base
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
GB3431467A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik AG
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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1190417A publication Critical patent/GB1190417A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • 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
    • C09D153/00—Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • C09D153/02—Vinyl aromatic monomers and conjugated dienes
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
    • C08J2353/02—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers of vinyl aromatic monomers and conjugated dienes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

1,190,417. Magnetic structures. BADISCHE ANILIN- & SODA-FABRIK A.G. 26 July, 1967 [27 July, 1966], No. 34314/67. Heading H1H. A magnetic recording media comprises a dispersion of ferromagnetic particles in a binder on a base, the binder being a block copolymer of butadiene and styrene and/or α-methylstyrene which has at least 3 blocks and has styrene or methylstyrene blocks at its ends. The copolymer preferably contains 60-95% butadiene and 5-25% methylstyrene or 10- 40% styrene, and may have 3,5,7, or 9 blocks. The ferromagnetic particles, e.g. acicular γ- Fe 2 O 3 , may be dispersed in a solution of the copolymer in tetrahydrofuran, toluene, butyl acetate, or mixtures thereof, in a ball mill. The mixture may include dispersing agents, lubricants, and antistatics, e.g. stearic acid, linseed oil fatty acid, modified rosin, and oleic acid. The dispersion is then applied to the base and dried at 70-150‹ C. The base may be a sheet, tape, or wire, of p.v.c., polyethylene terephthalate, cellulose triacetate, paper, or metal, and may have an intermediate layer of a vinylidene chloride-acrylonitrile copolymer or polyester.
GB3431467A 1966-07-27 1967-07-26 Production of Magnetic Recording Media Expired GB1190417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1966B0088243 DE1260132B (en) 1966-07-27 1966-07-27 Process for the production of magnetogram carriers

Publications (1)

Publication Number Publication Date
GB1190417A true GB1190417A (en) 1970-05-06

Family

ID=6984197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3431467A Expired GB1190417A (en) 1966-07-27 1967-07-26 Production of Magnetic Recording Media

Country Status (3)

Country Link
BE (1) BE701852A (en)
DE (1) DE1260132B (en)
GB (1) GB1190417A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014662A1 (en) * 1989-05-19 1990-11-29 Minnesota Mining And Manufacturing Company High molecular weight binders for magnetic recording media
WO2001096455A1 (en) * 2000-06-16 2001-12-20 Emtec Magnetics Gmbh Magnetic or magnetisable bonding agent composition
WO2004011550A2 (en) * 2002-07-31 2004-02-05 The Procter & Gamble Company Phase change solvents for thermoplastic elastomers
EP1873190A1 (en) * 2006-05-30 2008-01-02 Vagotex Windtex S.p.A. Method for the mechano-chemical treatment of materials comprising at least one polymer in the liquid state and products obtainable by said method
US7468411B2 (en) 2002-07-31 2008-12-23 The Procter & Gamble Company Thermoplastic elastomer compositions containing a phase change solvent and selected processing oils
US7524984B2 (en) 2002-07-31 2009-04-28 The Procter & Gamble Company Phase change solvents
US7563838B2 (en) 2002-07-31 2009-07-21 The Procter & Gamble Company Phase change solvents for thermoplastic polymers

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990014662A1 (en) * 1989-05-19 1990-11-29 Minnesota Mining And Manufacturing Company High molecular weight binders for magnetic recording media
US5128215A (en) * 1989-05-19 1992-07-07 Minnesota Mining & Manufacturing Company Magnetic recording media binder resin comprising a mixture of a straight block copolymer and a star block copolymer
WO2001096455A1 (en) * 2000-06-16 2001-12-20 Emtec Magnetics Gmbh Magnetic or magnetisable bonding agent composition
WO2004011550A2 (en) * 2002-07-31 2004-02-05 The Procter & Gamble Company Phase change solvents for thermoplastic elastomers
WO2004011550A3 (en) * 2002-07-31 2004-04-08 Procter & Gamble Phase change solvents for thermoplastic elastomers
CN1309782C (en) * 2002-07-31 2007-04-11 宝洁公司 Phase change solvents for thermoplastic elastomers
US7459494B2 (en) 2002-07-31 2008-12-02 The Procter & Gamble Company Phase change solvents for thermoplastic elastomers
US7468411B2 (en) 2002-07-31 2008-12-23 The Procter & Gamble Company Thermoplastic elastomer compositions containing a phase change solvent and selected processing oils
US7524984B2 (en) 2002-07-31 2009-04-28 The Procter & Gamble Company Phase change solvents
US7563838B2 (en) 2002-07-31 2009-07-21 The Procter & Gamble Company Phase change solvents for thermoplastic polymers
EP1873190A1 (en) * 2006-05-30 2008-01-02 Vagotex Windtex S.p.A. Method for the mechano-chemical treatment of materials comprising at least one polymer in the liquid state and products obtainable by said method

Also Published As

Publication number Publication date
BE701852A (en) 1968-01-26
DE1260132B (en) 1968-02-01

Similar Documents

Publication Publication Date Title
JPS57154618A (en) Magnetic recording medium
GB997223A (en) Improvements in or relating to the manufacture of magnetic recording media
GB1080614A (en) Magnetic recording material
GB977797A (en) Improved wear-resistant recording medium
GB1190417A (en) Production of Magnetic Recording Media
GB1416200A (en) Process and apparatus for the production of magnetic recording meida
GB1152651A (en) Improved Magnetic Recording Material
GB1244109A (en) Magnetic recording medium
GB1384918A (en) Magnetic record medium and method of treating same
US4239637A (en) Magnetic material for recording media
GB1100610A (en) Magnetic recording medium and method of making same
GB1403204A (en) Magnetic recording media and a process for their production
GB671269A (en) Improvements in or relating to multi-layer magnetic record members
US3007807A (en) Magnetic recording
GB1268458A (en) Improvements in and relating to the preparation of cobalt doped gamma ferric oxide
GB1153316A (en) Improved Magnetic Recording Material
KR900013468A (en) Magnetic recording media
GB1380158A (en) Manufacture of magnetic recording media
GB1232337A (en)
KR920001446A (en) Magnetic recording media
GB1132956A (en) Binder system for magneto recording medium
GB1319708A (en) Magnetic lacquers
JPH0252415B2 (en)
US2954303A (en) Production of ferromagnetic oxide
JPS57179943A (en) High-density magnetic recording medium

Legal Events

Date Code Title Description
PS Patent sealed
PE Patent expired