JPS57113420A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57113420A
JPS57113420A JP55188035A JP18803580A JPS57113420A JP S57113420 A JPS57113420 A JP S57113420A JP 55188035 A JP55188035 A JP 55188035A JP 18803580 A JP18803580 A JP 18803580A JP S57113420 A JPS57113420 A JP S57113420A
Authority
JP
Japan
Prior art keywords
mole
molecular weight
short
chain
specific
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.)
Granted
Application number
JP55188035A
Other languages
English (en)
Other versions
JPS6346887B2 (ja
Inventor
Masashi Somezawa
Yoshinobu Ninomiya
Akira Hashimoto
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP55188035A priority Critical patent/JPS57113420A/ja
Priority to US06/334,255 priority patent/US4368238A/en
Priority to DE19813151797 priority patent/DE3151797A1/de
Priority to NLAANVRAGE8105886,A priority patent/NL189830C/xx
Publication of JPS57113420A publication Critical patent/JPS57113420A/ja
Publication of JPS6346887B2 publication Critical patent/JPS6346887B2/ja
Granted 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
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
    • 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
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31511—Of epoxy ether
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31609—Particulate metal or metal compound-containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y10T428/31794—Of cross-linked polyester
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
JP55188035A 1980-12-29 1980-12-29 Magnetic recording medium Granted JPS57113420A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55188035A JPS57113420A (en) 1980-12-29 1980-12-29 Magnetic recording medium
US06/334,255 US4368238A (en) 1980-12-29 1981-12-24 Magnetic recording media
DE19813151797 DE3151797A1 (de) 1980-12-29 1981-12-29 "magnetisches aufzeichnungsmedium"
NLAANVRAGE8105886,A NL189830C (nl) 1980-12-29 1981-12-29 Magnetisch registreermedium, met een thermoplastische polyurethanhars als bindmiddel voor ferromagnetisch poeder, en werkwijze voor het maken daarvan.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55188035A JPS57113420A (en) 1980-12-29 1980-12-29 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57113420A true JPS57113420A (en) 1982-07-14
JPS6346887B2 JPS6346887B2 (ja) 1988-09-19

Family

ID=16216521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55188035A Granted JPS57113420A (en) 1980-12-29 1980-12-29 Magnetic recording medium

Country Status (4)

Country Link
US (1) US4368238A (ja)
JP (1) JPS57113420A (ja)
DE (1) DE3151797A1 (ja)
NL (1) NL189830C (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057527A (ja) * 1983-09-08 1985-04-03 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60258725A (ja) * 1984-06-05 1985-12-20 Dainippon Ink & Chem Inc 磁気記録媒体の結合剤
JPS6159623A (ja) * 1984-08-29 1986-03-27 Hitachi Maxell Ltd 磁気記録媒体
JPS61180927A (ja) * 1985-02-06 1986-08-13 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS63500103A (ja) * 1985-05-31 1988-01-14 ジエイコブス，リチヤ−ド バンパ−修理配合物
JPH0191317A (ja) * 1987-09-30 1989-04-11 Sony Corp 磁気記録媒体
JPH0191315A (ja) * 1987-10-01 1989-04-11 Sony Corp 磁気記録媒体

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5774829A (en) * 1980-10-27 1982-05-11 Fuji Photo Film Co Ltd Magnetic recording medium
DE3381028D1 (de) * 1982-07-21 1990-02-01 Basf Ag Magnetische aufzeichnungstraeger.
DE3227164A1 (de) * 1982-07-21 1984-01-26 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
JPS5971129A (ja) * 1982-10-18 1984-04-21 Fuji Photo Film Co Ltd 磁気記録媒体
DE3341699A1 (de) * 1983-11-18 1985-05-30 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
DE3341698A1 (de) * 1983-11-18 1985-05-30 Basf Ag, 6700 Ludwigshafen Magnetische aufzeichnungstraeger
US4526913A (en) * 1984-01-13 1985-07-02 J. H. Diamond Company Dimer polymeric coating selectively strippable as cohesive film
DE3401771A1 (de) * 1984-01-19 1985-08-01 Agfa-Gevaert Ag, 5090 Leverkusen Magnetisches speichermedium
US4876149A (en) * 1986-07-31 1989-10-24 Minnesota Mining And Manufacturing Company Magnetic recording media and a method using a stable fluid reactive dispersion in preparing magnetic recording media
US4837082A (en) * 1986-07-31 1989-06-06 Minnesota Mining And Manufacturing Company Flexible magnetic recording media and a method using a stable fluid reactive dispersion to prepare magnetic recording media
DE4039748A1 (de) * 1990-12-13 1992-06-17 Basf Magnetics Gmbh Magnetische aufzeichnungstraeger
DE69407415T2 (de) * 1993-06-30 1998-05-14 Imation Corp Magnetische aufzeichnungsmedien mit neuem vernetzungsmittel
US5371166A (en) * 1993-12-22 1994-12-06 The B. F. Goodrich Company Polyurethane composition for use as a dispersing binder
DE19644347C2 (de) * 1995-11-02 1999-08-12 Emtec Magnetics Gmbh Polyurethane
US6565964B1 (en) * 1997-06-12 2003-05-20 Fuji Photo Film Co., Ltd. Magnetic recording medium
JP2004046952A (ja) * 2002-07-10 2004-02-12 Sony Corp 磁気記録媒体
JP2005127226A (ja) * 2003-10-24 2005-05-19 Hitachi Industries Co Ltd 排水ポンプ及び水中軸受装置
KR101294977B1 (ko) * 2006-02-10 2013-08-08 아사히 가라스 가부시키가이샤 우레탄 수지의 제조 방법 및 점착제

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5428603A (en) * 1977-08-05 1979-03-03 Toyo Boseki Magnetic recording medium
JPS5483812A (en) * 1977-12-02 1979-07-04 Basf Ag Magnetic record carrier having polyurethane elastomer in magnetic layer
JPS5538693A (en) * 1978-09-13 1980-03-18 Toyo Tire & Rubber Co Ltd Magnetic recording medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5428603A (en) * 1977-08-05 1979-03-03 Toyo Boseki Magnetic recording medium
JPS5483812A (en) * 1977-12-02 1979-07-04 Basf Ag Magnetic record carrier having polyurethane elastomer in magnetic layer
JPS5538693A (en) * 1978-09-13 1980-03-18 Toyo Tire & Rubber Co Ltd Magnetic recording medium

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057527A (ja) * 1983-09-08 1985-04-03 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60258725A (ja) * 1984-06-05 1985-12-20 Dainippon Ink & Chem Inc 磁気記録媒体の結合剤
JPH0581968B2 (ja) * 1984-06-05 1993-11-17 Dainippon Ink & Chemicals
JPS6159623A (ja) * 1984-08-29 1986-03-27 Hitachi Maxell Ltd 磁気記録媒体
JPH0470686B2 (ja) * 1984-08-29 1992-11-11 Hitachi Maxell
JPS61180927A (ja) * 1985-02-06 1986-08-13 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPH0535483B2 (ja) * 1985-02-06 1993-05-26 Matsushita Electric Ind Co Ltd
JPS63500103A (ja) * 1985-05-31 1988-01-14 ジエイコブス，リチヤ−ド バンパ−修理配合物
JPH0191317A (ja) * 1987-09-30 1989-04-11 Sony Corp 磁気記録媒体
JPH0191315A (ja) * 1987-10-01 1989-04-11 Sony Corp 磁気記録媒体

Also Published As

Publication number Publication date
NL8105886A (nl) 1982-07-16
NL189830C (nl) 1993-08-02
DE3151797A1 (de) 1982-08-19
JPS6346887B2 (ja) 1988-09-19
US4368238A (en) 1983-01-11
DE3151797C2 (ja) 1991-11-28

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