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GB2039930B - Coating of fine particles in polyurethane binder - Google Patents

Coating of fine particles in polyurethane binder

Info

Publication number
GB2039930B
GB2039930B GB8001824A GB8001824A GB2039930B GB 2039930 B GB2039930 B GB 2039930B GB 8001824 A GB8001824 A GB 8001824A GB 8001824 A GB8001824 A GB 8001824A GB 2039930 B GB2039930 B GB 2039930B
Authority
GB
United Kingdom
Prior art keywords
coating
fine particles
polyurethane binder
polyurethane
binder
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
GB8001824A
Other versions
GB2039930A (en
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
Publication of GB2039930A publication Critical patent/GB2039930A/en
Application granted granted Critical
Publication of GB2039930B publication Critical patent/GB2039930B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • C08G18/08—Processes
    • C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
    • C08G18/0809—Manufacture of polymers containing ionic or ionogenic groups containing cationic or cationogenic groups
    • C08G18/0814—Manufacture of polymers containing ionic or ionogenic groups containing cationic or cationogenic groups containing ammonium groups or groups forming them
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step

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)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Laminated Bodies (AREA)
  • Polyurethanes Or Polyureas (AREA)
GB8001824A 1979-01-19 1980-01-18 Coating of fine particles in polyurethane binder Expired GB2039930B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481679A 1979-01-19 1979-01-19

Publications (2)

Publication Number Publication Date
GB2039930A GB2039930A (en) 1980-08-20
GB2039930B true GB2039930B (en) 1983-05-25

Family

ID=21712670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8001824A Expired GB2039930B (en) 1979-01-19 1980-01-18 Coating of fine particles in polyurethane binder

Country Status (4)

Country Link
JP (1) JPS55100157A (en)
DE (1) DE3002164C2 (en)
FR (1) FR2446855A1 (en)
GB (1) GB2039930B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5891524A (en) * 1981-11-24 1983-05-31 Hitachi Maxell Ltd Magnetic recording medium
JPS58115629A (en) * 1981-12-28 1983-07-09 Fuji Photo Film Co Ltd Magnetic recording medium
JPS58122619A (en) * 1982-01-14 1983-07-21 Sony Corp Magnetic recording medium
US4525424A (en) * 1983-12-30 1985-06-25 International Business Machines Corporation Flexible magnetic recording media having a polyester-polyurethane binder and chromium dioxide pigment
JPS63103416A (en) * 1986-10-21 1988-05-09 Dainichi Color & Chem Mfg Co Ltd magnetic recording medium
JPH0191317A (en) * 1987-09-30 1989-04-11 Sony Corp Magnetic recording medium
JPH0191315A (en) * 1987-10-01 1989-04-11 Sony Corp Magnetic recording medium
JPH02108225A (en) * 1988-10-17 1990-04-20 Tdk Corp Magnetic recording medium
JP2764736B2 (en) * 1989-03-15 1998-06-11 チッソ株式会社 Magnetic paint
JP2663184B2 (en) * 1989-11-10 1997-10-15 日本ポリウレタン工業株式会社 Method for producing polyurethane resin binder for magnetic recording medium
JP2663186B2 (en) * 1989-11-29 1997-10-15 日本ポリウレタン工業株式会社 Method for producing polyurethane resin binder for magnetic recording medium
FR2815350B1 (en) * 2000-10-17 2006-12-29 Oreal CATIONIC POLYURETHANES WITH ELASTIC CHARACTERISTICS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL299775A (en) * 1962-10-26
DE1595602A1 (en) * 1966-03-12 1969-09-18 Bayer Ag Process for the production of polyurethane plastics
US3490945A (en) * 1966-11-15 1970-01-20 Rca Corp Magnetic recording element and method for preparing same
DE2255802C3 (en) * 1972-11-15 1981-10-15 Basf Ag, 6700 Ludwigshafen Layer magnetogram carrier

Also Published As

Publication number Publication date
FR2446855A1 (en) 1980-08-14
JPS55100157A (en) 1980-07-30
JPS6321613B2 (en) 1988-05-09
GB2039930A (en) 1980-08-20
DE3002164C2 (en) 1994-05-05
DE3002164A1 (en) 1980-07-31
FR2446855B1 (en) 1983-11-10

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950118