DE69709298D1 - Aromatischer polyamidfilm und magnetisches aufzeichnungsmedium das dasselbe verwendet - Google Patents

Aromatischer polyamidfilm und magnetisches aufzeichnungsmedium das dasselbe verwendet

Info

Publication number
DE69709298D1
DE69709298D1 DE69709298T DE69709298T DE69709298D1 DE 69709298 D1 DE69709298 D1 DE 69709298D1 DE 69709298 T DE69709298 T DE 69709298T DE 69709298 T DE69709298 T DE 69709298T DE 69709298 D1 DE69709298 D1 DE 69709298D1
Authority
DE
Germany
Prior art keywords
recording medium
same
magnetic recording
aromatic polyamide
polyamide film
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 - Lifetime
Application number
DE69709298T
Other languages
English (en)
Other versions
DE69709298T2 (de
Inventor
Toshiya Ieki
Akimitsu Tsukuda
Toshihiro Tsuzuki
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Application granted granted Critical
Publication of DE69709298D1 publication Critical patent/DE69709298D1/de
Publication of DE69709298T2 publication Critical patent/DE69709298T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • G11B5/73937—Substrates having an organic polymer comprising a ring structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B29K2077/10—Aromatic polyamides [polyaramides] or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
    • B29K2079/08—PI, i.e. polyimides or derivatives thereof
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
    • 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
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • 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]
    • Y10T428/31721—Of polyimide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Magnetic Record Carriers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
DE69709298T 1996-05-22 1997-05-22 Aromatischer polyamidfilm und magnetisches aufzeichnungsmedium das dasselbe verwendet Expired - Lifetime DE69709298T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP12690896 1996-05-22
PCT/JP1997/001715 WO1997044182A1 (fr) 1996-05-22 1997-05-22 Film de polyamide aromatique et/ou de polyimide aromatique et support d'enregistrement magnetique utilisant un tel film

Publications (2)

Publication Number Publication Date
DE69709298D1 true DE69709298D1 (de) 2002-01-31
DE69709298T2 DE69709298T2 (de) 2002-08-14

Family

ID=14946877

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69709298T Expired - Lifetime DE69709298T2 (de) 1996-05-22 1997-05-22 Aromatischer polyamidfilm und magnetisches aufzeichnungsmedium das dasselbe verwendet

Country Status (8)

Country Link
US (1) US5969080A (de)
EP (1) EP0844061B1 (de)
KR (1) KR100456747B1 (de)
CN (1) CN1064586C (de)
CA (1) CA2227576A1 (de)
DE (1) DE69709298T2 (de)
TW (1) TW354286B (de)
WO (1) WO1997044182A1 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6416881B1 (en) 1999-08-10 2002-07-09 Seagate Technology Llc Media with a metal oxide sealing layer
US6797801B2 (en) * 2000-04-20 2004-09-28 Teijin Limited Polyimide film and process for producing the same
EP1707590B1 (de) * 2003-12-26 2008-12-10 Toyo Boseki Kabushiki Kaisha Polyimidfolie
US20060084741A1 (en) * 2004-10-19 2006-04-20 Sapna Blackburn Polyetherimide composition, film, process, and article
JP4977953B2 (ja) * 2005-01-11 2012-07-18 東洋紡績株式会社 ポリイミド前駆体フィルム、ポリイミドフィルムの製造方法およびポリイミドフィルム
KR20100089728A (ko) 2009-02-03 2010-08-12 엘지전자 주식회사 무선 통신 시스템에서 확인 응답 전송 및 수신 방법
JP5600304B2 (ja) * 2010-03-03 2014-10-01 富士フイルム株式会社 光散乱シート及びその製造方法
US9172075B2 (en) * 2010-12-21 2015-10-27 GM Global Technology Operations LLC Battery separators with variable porosity
KR102219722B1 (ko) * 2020-05-04 2021-02-24 에스케이이노베이션 주식회사 폴리이미드계 필름 및 이를 포함하는 플렉서블 디스플레이 패널

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59204518A (ja) * 1983-05-09 1984-11-19 Mitsui Toatsu Chem Inc 共重合体フイルムの製造方法
FI850739L (fi) * 1984-03-21 1985-09-23 Hercules Inc Spraybara murbruk.
EP0198326B1 (de) * 1985-04-04 1991-08-07 Asahi Kasei Kogyo Kabushiki Kaisha Poly-p-phenylenterephthalamidfolie und Verfahren zu ihrer Herstellung
EP0277783B1 (de) * 1987-02-02 1994-04-06 Canon Kabushiki Kaisha Magnetischer Aufzeichnungsträger
AT387783B (de) * 1987-06-09 1989-03-10 Chemiefaser Lenzing Ag Verfahren zur herstellung von hochtemperaturbestaendigen folien
JPH01198638A (ja) * 1987-08-21 1989-08-10 Ube Ind Ltd ポリイミドフィルムの製造法
US5460890A (en) * 1991-10-30 1995-10-24 E. I. Du Pont De Nemours And Company Biaxially stretched isotropic polyimide film having specific properties
JPH06136156A (ja) * 1992-10-26 1994-05-17 Asahi Chem Ind Co Ltd 芳香族ポリアミドフィルムおよびその製造法
JPH07256750A (ja) * 1994-03-23 1995-10-09 Toyobo Co Ltd 二軸延伸ポリアミドフィルム
JP3565614B2 (ja) * 1994-05-11 2004-09-15 旭化成ケミカルズ株式会社 芳香族ポリアミド成形物及び製法
DE69530463T2 (de) * 1994-06-23 2004-02-12 Toray Industries, Inc. Magnetisches aufzeichnungsmedium
JP3486655B2 (ja) * 1994-08-03 2004-01-13 住友化学工業株式会社 芳香族ポリアミドフィルムの製造方法
JP3567624B2 (ja) * 1995-07-05 2004-09-22 東レ株式会社 芳香族ポリアミドフィルムまたは芳香族ポリイミドフィルム

Also Published As

Publication number Publication date
WO1997044182A1 (fr) 1997-11-27
EP0844061A1 (de) 1998-05-27
CN1064586C (zh) 2001-04-18
KR100456747B1 (ko) 2005-04-06
EP0844061B1 (de) 2001-12-19
TW354286B (en) 1999-03-11
DE69709298T2 (de) 2002-08-14
KR19990029095A (ko) 1999-04-15
CA2227576A1 (en) 1997-11-27
US5969080A (en) 1999-10-19
EP0844061A4 (de) 1999-03-10
CN1198127A (zh) 1998-11-04

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