DE68925808D1 - Sulfonierte hydroxyfunktionale Polyurethane zur Verwendung bei magnetischen Aufzeichnungsträgern und ihre Herstellungsverfahren - Google Patents

Sulfonierte hydroxyfunktionale Polyurethane zur Verwendung bei magnetischen Aufzeichnungsträgern und ihre Herstellungsverfahren

Info

Publication number
DE68925808D1
DE68925808D1 DE68925808T DE68925808T DE68925808D1 DE 68925808 D1 DE68925808 D1 DE 68925808D1 DE 68925808 T DE68925808 T DE 68925808T DE 68925808 T DE68925808 T DE 68925808T DE 68925808 D1 DE68925808 D1 DE 68925808D1
Authority
DE
Germany
Prior art keywords
magnetic recording
recording media
manufacturing processes
functional polyurethanes
sulphonated
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 - Fee Related
Application number
DE68925808T
Other languages
English (en)
Other versions
DE68925808T2 (de
Inventor
Takatoshi C O Minnesota Ohkubo
James G C O Minnesota Carlson
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of DE68925808D1 publication Critical patent/DE68925808D1/de
Publication of DE68925808T2 publication Critical patent/DE68925808T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30Low-molecular-weight compounds
    • C08G18/32Polyhydroxy compounds; Polyamines; Hydroxyamines
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/702Record 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
    • G11B5/7021Record 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08Processes
    • C08G18/0804Manufacture of polymers containing ionic or ionogenic groups
    • C08G18/0819Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
    • C08G18/0828Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing sulfonate groups or groups forming them
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/48Polyethers
    • C08G18/50Polyethers having heteroatoms other than oxygen
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/68Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70Record 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
    • G11B5/702Record 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
DE68925808T 1989-01-06 1989-12-18 Sulfonierte hydroxyfunktionale Polyurethane zur Verwendung bei magnetischen Aufzeichnungsträgern und ihre Herstellungsverfahren Expired - Fee Related DE68925808T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29504689A 1989-01-06 1989-01-06

Publications (2)

Publication Number Publication Date
DE68925808D1 true DE68925808D1 (de) 1996-04-04
DE68925808T2 DE68925808T2 (de) 1996-10-10

Family

ID=23135986

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68925808T Expired - Fee Related DE68925808T2 (de) 1989-01-06 1989-12-18 Sulfonierte hydroxyfunktionale Polyurethane zur Verwendung bei magnetischen Aufzeichnungsträgern und ihre Herstellungsverfahren

Country Status (4)

Country Link
EP (1) EP0377297B1 (de)
JP (1) JP2766698B2 (de)
KR (1) KR900011812A (de)
DE (1) DE68925808T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244739A (en) * 1990-06-25 1993-09-14 Minnesota Mining And Manufacturing Company Magnetic recording media comprising a cured dispersion coating of a magnetizable pigment and polyurethane polymer containing a vinyl polymeric segment pendant from the polyurethane backbone
US5118580A (en) * 1990-06-25 1992-06-02 Minnesota Mining And Manufacturing Company Magnetic recording media prepared from polyurethane copolymers formed utilizing an interferter compound
DE69127406T2 (de) * 1990-06-25 1998-02-26 Minnesota Mining & Mfg Vinylsulfonierte und nichtsulfonierte hydroxy-funktionelle Polyurethancopolymere aus Makromeren und deren Verwendung für magnetisches Aufzeichnungmedium
TWI773891B (zh) * 2019-04-12 2022-08-11 南亞塑膠工業股份有限公司 水性聚氨酯分散液的製備方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152485A (en) * 1977-08-05 1979-05-01 Toyo Boseki Kabushiki Kaisha Magnetic recording medium
JPS6095722A (ja) * 1983-10-28 1985-05-29 Sony Corp 磁気記録媒体
JPS61198417A (ja) * 1985-02-27 1986-09-02 Kao Corp 磁気記録媒体
EP0193084B1 (de) * 1985-03-01 1988-04-20 Sumitomo Bayer Urethane Co.Ltd: Magnetischer Aufzeichnungsträger, Verfahren zur Herstellung eines magnetischen Aufzeichnungsträgers und Binderzusammensetzung dafür
US4638017A (en) * 1985-12-09 1987-01-20 Minnesota Mining And Manufacturing Company Hydrophilic polyurethane/polyurea sponge

Also Published As

Publication number Publication date
JPH02258826A (ja) 1990-10-19
EP0377297B1 (de) 1996-02-28
DE68925808T2 (de) 1996-10-10
KR900011812A (ko) 1990-08-02
EP0377297A3 (de) 1991-05-29
EP0377297A2 (de) 1990-07-11
JP2766698B2 (ja) 1998-06-18

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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