KR910008662A - 자기 기록 매체 - Google Patents

자기 기록 매체 Download PDF

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Publication number
KR910008662A
KR910008662A KR1019900017251A KR900017251A KR910008662A KR 910008662 A KR910008662 A KR 910008662A KR 1019900017251 A KR1019900017251 A KR 1019900017251A KR 900017251 A KR900017251 A KR 900017251A KR 910008662 A KR910008662 A KR 910008662A
Authority
KR
South Korea
Prior art keywords
group
vinyl chloride
chloride polymer
magnetic recording
recording medium
Prior art date
Application number
KR1019900017251A
Other languages
English (en)
Other versions
KR0132421B1 (ko
Inventor
마사히로 야마까와
Original Assignee
다끼사와 다께시
닛뽕제온 가부시끼가이샤
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 다끼사와 다께시, 닛뽕제온 가부시끼가이샤 filed Critical 다끼사와 다께시
Publication of KR910008662A publication Critical patent/KR910008662A/ko
Application granted granted Critical
Publication of KR0132421B1 publication Critical patent/KR0132421B1/ko

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
    • 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
    • G11B5/7022—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 containing mixtures of polyurethanes or polyisocyanates with other polymers
    • 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]
    • Y10T428/31551—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]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

내용 없음

Description

자기 기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (5)

  1. 비 자기 기판 및 그 위에 형성된 자기 분말-함유 자기층을 함유하며, 상기 층은 자기 분말용 결합제로서, 주 사슬에 직접 결합되지 않은 2중량%이하의 히드록실기(들)을 함유하는 염화빌닐중합체 및 분자당 2.3이상의 이소시아네이트기를 함유하며 2,000이상의 분자량을 가지는 폴리우레탄을 추가로 함유하며 두개의 중합체들은 서로 교차 결합하고 있는 자기기록매체.
  2. 제1항에 있어서, 자기분말용 결합제는 20-80중량%의 염화비닐 중합체 및 80-20 중량%의 폴리우레탄으로 이루어진 자기기록매체.
  3. 제1항에 있어서, 염화비닐 중합체가 히드록실기(들)외에도 (a)카르복실산, 또는 황-또는 인-함유산 또는 그의 염에서 유래된 음이온성 친수성기 및 (b)일반식
    또는 -NR2HX1(상기식에서, R1,R2,R3및 R은 각각 알킬기, 알릴기, 알케닐기 또는 알콕시기이며, X및 X1은 각각 할로겐원자, 황산, 인산 또는 질산의 잔기, 또는 카로복실산, 산성 황산 에스테르, 산성 인산 에스테르 등과 같은 유기산의 잔기이다.)에서 선택된 양이온성 친수성기로 구성된 군에서 선택되는 한 종류 이상의 기를 함유하는 자기기록매체.
  4. 제3항에 있어서, 염화비닐 중합체는 음이온성 친수성기1개당 염화비닐 중합체의 분자량이 4,000~40,000가 되는 비율로 음이온성 친수성기(들)을 함유하는 자기 기록 매체.
  5. 제3항에 있어서, 염화 비닐 중합체는 질소 함량을 기준으로하여 0.02~0.5중량%의 양으로 양이온성 친수성기(들)을 함유하는 자기기록매체.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900017251A 1989-10-26 1990-10-26 자기 기록 매체 KR0132421B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1-279563 1989-10-26
JP27956389A JPH06105501B2 (ja) 1989-10-26 1989-10-26 磁気記録媒体

Publications (2)

Publication Number Publication Date
KR910008662A true KR910008662A (ko) 1991-05-31
KR0132421B1 KR0132421B1 (ko) 1998-04-15

Family

ID=17612719

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900017251A KR0132421B1 (ko) 1989-10-26 1990-10-26 자기 기록 매체

Country Status (3)

Country Link
US (1) US5221582A (ko)
JP (1) JPH06105501B2 (ko)
KR (1) KR0132421B1 (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2616378B2 (ja) * 1993-04-27 1997-06-04 日本電気株式会社 磁気記憶装置
US5759666A (en) * 1995-12-21 1998-06-02 Minnesota Mining And Manufacturing Company Carboxylic acid functional polyurethane polymers and blends thereof used in magnetic recording media
US5674604A (en) * 1995-03-31 1997-10-07 Minnesota Mining And Manufacturing Company Magnetic recording medium comprising magnetic particles, binder, and a non halogenated vinyl oligomer dispersant
JP2002345724A (ja) * 2001-05-22 2002-12-03 Asahi Optical Co Ltd 内視鏡

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490945A (en) * 1966-11-15 1970-01-20 Rca Corp Magnetic recording element and method for preparing same
JPH0740344B2 (ja) * 1985-09-19 1995-05-01 ティーディーケイ株式会社 磁気記録媒体
CA1278399C (en) * 1985-10-15 1990-12-27 Charles Neale Merriam Vinyl chloride resins and compositions incorporating such resins
US4970127A (en) * 1986-10-20 1990-11-13 Union Carbide Chemicals And Plastics Company Inc. Novel vinyl chloride resins and compositions incorporating such resins
JPH0766519B2 (ja) * 1987-04-20 1995-07-19 富士写真フイルム株式会社 磁気記録媒体

Also Published As

Publication number Publication date
US5221582A (en) 1993-06-22
JPH06105501B2 (ja) 1994-12-21
JPH03141020A (ja) 1991-06-17
KR0132421B1 (ko) 1998-04-15

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