TW216460B - - Google Patents

Info

Publication number
TW216460B
TW216460B TW081105450A TW81105450A TW216460B TW 216460 B TW216460 B TW 216460B TW 081105450 A TW081105450 A TW 081105450A TW 81105450 A TW81105450 A TW 81105450A TW 216460 B TW216460 B TW 216460B
Authority
TW
Taiwan
Application number
TW081105450A
Other languages
Chinese (zh)
Original Assignee
Dow Chemical 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 Dow Chemical Co filed Critical Dow Chemical Co
Application granted granted Critical
Publication of TW216460B publication Critical patent/TW216460B/zh

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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • 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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • 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
    • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
    • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
    • C08G73/22—Polybenzoxazoles
    • 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
    • C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
    • C08G75/32—Polythiazoles; Polythiadiazoles
    • 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
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)
TW081105450A 1992-03-24 1992-07-09 TW216460B (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85704392A 1992-03-24 1992-03-24

Publications (1)

Publication Number Publication Date
TW216460B true TW216460B (ja) 1993-11-21

Family

ID=25325052

Family Applications (2)

Application Number Title Priority Date Filing Date
TW081105450A TW216460B (ja) 1992-03-24 1992-07-09
TW081105449A TW240311B (ja) 1992-03-24 1992-07-09

Family Applications After (1)

Application Number Title Priority Date Filing Date
TW081105449A TW240311B (ja) 1992-03-24 1992-07-09

Country Status (6)

Country Link
EP (1) EP0632921A1 (ja)
JP (1) JPH07504291A (ja)
KR (2) KR950701116A (ja)
CA (2) CA2132710A1 (ja)
TW (2) TW216460B (ja)
WO (2) WO1993019462A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3669457B2 (ja) * 1996-03-19 2005-07-06 富士通株式会社 磁気記録媒体及びその製造方法
WO1999004390A1 (fr) * 1997-07-17 1999-01-28 Sony Corporation Support d'enregistrement magnetique et dispositif d'enregistrement/de reproduction magnetique le comprenant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449296A (en) * 1967-05-29 1969-06-10 Du Pont Polybenzoxazole film
JPS58122622A (ja) * 1982-01-18 1983-07-21 Hitachi Ltd 磁気記録媒体に有機保護膜を形成する方法
US5124432A (en) * 1989-08-31 1992-06-23 The Dow Chemical Company Branched polybenzazole polymer and method of preparation

Also Published As

Publication number Publication date
CA2132710A1 (en) 1993-09-30
WO1993019461A1 (en) 1993-09-30
CA2132545A1 (en) 1993-09-30
TW240311B (ja) 1995-02-11
JPH07504291A (ja) 1995-05-11
KR950701115A (ko) 1995-02-20
KR950701116A (ko) 1995-02-20
WO1993019462A1 (en) 1993-09-30
EP0632921A1 (en) 1995-01-11

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