KR970061953A - 방향족 폴리아미드 및 또는 방향족 폴리이미드 필름 및 그것을 사용한 자기기록매체 - Google Patents

방향족 폴리아미드 및 또는 방향족 폴리이미드 필름 및 그것을 사용한 자기기록매체 Download PDF

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KR970061953A
KR970061953A KR1019970005883A KR19970005883A KR970061953A KR 970061953 A KR970061953 A KR 970061953A KR 1019970005883 A KR1019970005883 A KR 1019970005883A KR 19970005883 A KR19970005883 A KR 19970005883A KR 970061953 A KR970061953 A KR 970061953A
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film
aromatic polyamide
depth
particle concentration
dmax
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토시히로 쯔즈키
마사노리 수에오카
노부아키 이토오
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마에다 카쯔노수케
도레 카부시키가이샤
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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    • C08J5/18—Manufacture of 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
    • G11B5/68—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
    • G11B5/714—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 dimension of the magnetic particles
    • 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
    • G11B5/733—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 characterised by the addition of non-magnetic particles
    • 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
    • G11B5/73925—Composite or coated non-esterified substrates
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    • 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
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    • 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
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    • 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
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
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    • C08K2201/003—Additives being defined by their diameter
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
    • 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
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    • 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
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Abstract

주행성 및 내스크래치성에 우수하고, 자기기록매체로 했을 때의S/N비가 양호한 필름을 제공하는 것을 목적으로 한다.
방향족 폴리아미드 및/또는 방향족 폴리아미드를 주성분으로 하고, 그 성분중에 입자를 함유시킨 필름으로서, 그 필름의 적어도 한면에 있어서, 입자농도가 최초로 극대치를 표시하는 깊이를 damx, dmax보다 깊게 필름표면으로부터 1㎛까지의 범위에 있어서의 입자농도가 최소치 또는 극소치를 표시하는 깊이를 dmin, dmax보다 깊게 입자농도 분포곡선의 1차 미분치가 부수의 변곡점을 표시하는 깊이를 d,각 깊이에 있어서의 입자농도를 p(d)로 했을 때, 식,
(1) 10nm≤dmax≤300nm
(2) 3≤p(dmx)/p(dmin)≤100 또는,
(3) 10nm≤dmax≤300nm
(4) 3≤p(dmx)/p(d)≤100
(5) p(dmax)/p(dmin)100

Description

방향족 폴리아미드 및 또는 방향족 폴리아미드 필름 및 그것을 사용한 자기기록매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (11)

  1. 방향족 폴리아미드 및/또는 방향족 폴리아미드를 주성분으로 하고, 그 성분중에 입자를 함유시킨 필름으로서, 그 필름의 적오도 한면에 있어서, 입자농도가 최초로 극대치를 표시하는 깊이를 damx, dmax보다 깊게 필름표면으로부터 1㎛까지의 범위에 있어성의 입자농도가 최소치 또는 극소치를 표시하는 깊이를 dmin, 각 깊이에 있어서의 입자농도를 p(d)로 했을 때. 식,
    를 만족시키는 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  2. 방향족 폴리아미드 및/또는 방향족 폴리아미드를 주성분으로 하고, 그 성분중에 입자를 함유시킨 필름으로서, 그 필름의 적어도 한면에 있어서, 입자농도가 최초로 극대치를 표시하는 깊이를 damx, dmax보다 깊게 필름표면으로부터 1㎛까지의 범위에 있어서의 입자농도가 최소치 또는 극소치를 표시하는 깊이를 dmin, dmax보다 깊게 입자농도 분포곡선의 1차 미분값이 부수의 변곡점을 표시하는 깊이를 d(단, d는 p(d)가 p(dax)의 4/5로 되는 깊이로부터 dmin 사이에서만 정의된다), 각 깊이에 있어서의 입자농도를 p(d)로 했을 때, 식,
    를 만족시키는 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  3. 제1항 또는 제2항에 있어서, 필름속에 함유되는 입자의 필름속에서의 평균입경이 5nm로부터 500nm의 범위에 있고, 또한, 입자의 입경분포의 상대표준편차가 0.7 이하인 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  4. 제1항 내지 제3항 중 어느 1항에 있어서, (1)식 및 (2)식, 또는 (3)식에서 (5)식을 만족시킨 면의 뒷면에 있어서 입자농도가 최초로 극대치를 표시하는 깊이를 Dmax로 했을 때(단, Dmax가 (1)식 및 (2)식, 또는 (3)식에서 (5)식을 만족시킬 때는,
    를 만족시키는 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  5. 제1항 내지 제4항 중 어느 1항에 있어서, 필름의 (1)식 및 (2)식, 또는 (3)식에서 (5)식을 만족시키는 적어도 한면에 형성된 표면돌기의 평균높이(h), 돌기높이의 분포를 상대표준편차(0/h) 및 평균돌기높이(h)의1/3이하의 높이의 돌기개수의 전돌기수로 점유하는 비율이(P1/3), 아래식,
    를 만족시키는 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  6. 제1항 내지 제5항 중 어느 1항에 있어서, 필름의 (1)식 및 (2)식, 또는 (3)식에서 (5)식을 만족시키는 적어도 한면에 있어서, dmax로부터 필름 표면보다 1㎛까지의 두께의 범위에 있어서 입자농도의 극소치를 보유하는 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  7. 제1항 내지 제6항 중 어느 1항에 있어서, 필름의 두께가 6.5㎛ 이하인 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  8. 제1항 내지 제7항 중 어느 1항에 있어서, 이 필름이 단층구성으로 되어 있는 지 실질적으로 단층구성인 것을 특징으로 하는 방향족 폴리아미드 및/또는 방향족 폴리아미드 필름.
  9. 제1항 내지 제8항 중 어느 1항에 있어서, (1)식 및 (2)식, 또는 (3)식에서 (5)식을 만족시키는 적어도 한면에 자성층을 형성하는 것을 특징으로 하는 자기기록매체
  10. 제1항 내지 제9항 중 어느 1항에 있어서, (1)식 및 (2)식, 또는 (3)식에서 (5)식을 만족시키는 면의 반대편에 자성층을 형성하는 것을 특징으로 하는 자기기록매체.
  11. 제9항 혹은 제10항에 있어서, 폭이 2.3으로부터 13.0mm, 필름의 두께가 6.5㎛ 이하, 길이가 100m/감기 이상, 자기기록매체로서의 기록밀도가 8길로바이트(㎟ 이상인 자기테이프인 것을 특징으로 하는 자기기록매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970005883A 1996-02-27 1997-02-26 방향족폴리아미드및/또는방향족폴리이미드필름및그것을사용한자기기록매체 KR100456056B1 (ko)

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EP (1) EP0793219B1 (ko)
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CN (1) CN1066750C (ko)
CA (1) CA2198532A1 (ko)
DE (1) DE69721617T2 (ko)
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WO2006107043A1 (ja) * 2005-04-04 2006-10-12 Ube Industries, Ltd. 銅張り積層基板
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TW400351B (en) 2000-08-01
CA2198532A1 (en) 1997-08-27
EP0793219A3 (en) 1998-07-15
CN1172126A (zh) 1998-02-04
EP0793219B1 (en) 2003-05-07
US5972474A (en) 1999-10-26
EP0793219A2 (en) 1997-09-03
DE69721617D1 (de) 2003-06-12
DE69721617T2 (de) 2004-02-26
CN1066750C (zh) 2001-06-06

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