KR880000919A - 자기 기록 매체 - Google Patents

자기 기록 매체 Download PDF

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Publication number
KR880000919A
KR880000919A KR1019870006038A KR870006038A KR880000919A KR 880000919 A KR880000919 A KR 880000919A KR 1019870006038 A KR1019870006038 A KR 1019870006038A KR 870006038 A KR870006038 A KR 870006038A KR 880000919 A KR880000919 A KR 880000919A
Authority
KR
South Korea
Prior art keywords
carbon atoms
group
magnetic pigment
pigment particles
magnetic
Prior art date
Application number
KR1019870006038A
Other languages
English (en)
Other versions
KR950011812B1 (ko
Inventor
제이 킴발 데이비드
Original Assignee
노만 에드워드 루이스
다우 코닝 코포레이션
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 노만 에드워드 루이스, 다우 코닝 코포레이션 filed Critical 노만 에드워드 루이스
Publication of KR880000919A publication Critical patent/KR880000919A/ko
Application granted granted Critical
Publication of KR950011812B1 publication Critical patent/KR950011812B1/ko

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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
    • 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
    • G11B5/7013—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 dispersing agent
    • 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
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/30—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen phosphorus-containing groups
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
  • Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)

Abstract

내용 없음

Description

자기 기록 매체
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (4)

  1. 하기 일반식(Ⅰ)의 포스페이트 에스테르 약 40 내지 약 80중량부, 및 디페닐신란디올 및 하기 일반식(Ⅱ)의 실란으로 이루러진 그룹중에서 선택된 실리콘 화합물 약 20내지 약 60중량부의 반응 생성물로 이루어짐을 특징으로 하는 조성물.
    상식기에서, X는 RO-, RO(R'O)n-및
    으로 이루어지는 그룹 중에서 독립적으로 선택되며, 여기서 R은 탄소수 1 내지 25의 알킬 라디칼이며, R'는 탄소수 2 내지 4의 알킬렌그룹이고, R''는 탄소수 5내지 15의 알킬 라디칼이며, n은 1 내지 100의 정수이며, m의 평균치는 1 내지 2이고, R'''는 탄소수 1내지 3의 알킬그룹이며, Z는 탄소수 1 내지 6 알킬그룹, 탄소수 2 내지 6의 할로알킬그룹, 탄소수 2 내지 6의 알케닐그룹, 아크릴옥시프로필, 메타크릴옥시프로필 및 페닐로 이루어진 그룹 중에서 선택된다.
  2. 제1항에 있어서, Z가 γ-클로로프로필, n-프로필, 비닐, 메타크릴옥시프로필 및 페닐로 이루어진 그룹중에서 선택되는 조성물.
  3. 자기 안료입자, 자기 안료입자용 결합제, 및 자기 안료 입자용 분산제로서 제1항에 조성물로 이루어짐을 특징으로 하는 자기 피복 조성물.
  4. 제3항에 있어서, 자기 안료입자가 산화철, 코발트-개질된 산화철 또는 철, 코발트 또는 니켈의 급속합금으로 이루어짐을 특징으로 하는 자기피복조성물.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019870006038A 1986-06-16 1987-06-15 자기 기록 매체 KR950011812B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US874,751 1986-06-16
US874751 1986-06-16
US06/874,751 US4719121A (en) 1986-06-16 1986-06-16 Method of making a magnetic recording medium and composition

Publications (2)

Publication Number Publication Date
KR880000919A true KR880000919A (ko) 1988-03-30
KR950011812B1 KR950011812B1 (ko) 1995-10-10

Family

ID=25364491

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019870006038A KR950011812B1 (ko) 1986-06-16 1987-06-15 자기 기록 매체

Country Status (6)

Country Link
US (1) US4719121A (ko)
EP (1) EP0250205B1 (ko)
JP (1) JPS634417A (ko)
KR (1) KR950011812B1 (ko)
CA (1) CA1310653C (ko)
DE (1) DE3763764D1 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100657309B1 (ko) * 2005-01-18 2006-12-13 삼성전자주식회사 초임계 유체와 친화성을 갖는 고분자 분산제

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01149220A (ja) * 1987-12-03 1989-06-12 Kao Corp 磁気記録媒体
US4780148A (en) * 1988-01-25 1988-10-25 Dow Corning Corporation Stabilized magnetic metal pigment
US4961959A (en) * 1988-03-23 1990-10-09 Dow Corning Corporation Quaternary ammonium salt of an alkoxysilane as a dispersant for magnetic pigment
US4990276A (en) * 1990-02-01 1991-02-05 Eastman Kodak Company Magnetic dispersion
US5079086A (en) * 1990-10-11 1992-01-07 International Business Machines Corp. Magnetic recording media
US5916355A (en) * 1998-08-11 1999-06-29 Sony Corporation Corrosion inhibitor for magnetic media
US6660793B1 (en) 2000-06-15 2003-12-09 E. I. Du Pont De Nemours And Company Aqueous coating compositions having improved transparency
JP2002298333A (ja) * 2001-03-29 2002-10-11 Fuji Photo Film Co Ltd 六方晶系フェライトの製造方法及びそれを用いた磁気記録媒体

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5240847B2 (ko) * 1972-10-05 1977-10-14
DE2543962A1 (de) * 1975-10-02 1977-04-14 Dynamit Nobel Ag Verbesserte eisenoxid-magnetpigmente fuer die herstellung von magnetschichten
US4419257A (en) * 1981-11-12 1983-12-06 Memorex Corporation Magnetic coating composition
US4438156A (en) * 1982-09-30 1984-03-20 International Business Machines Corporation Mono-particle magnetic dispersion in organic polymers for magnetic recording
JPS59180830A (ja) * 1983-03-31 1984-10-15 Kao Corp 磁気記録媒体
JPS6043217A (ja) * 1983-08-19 1985-03-07 Toshiba Corp 磁気記録媒体

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100657309B1 (ko) * 2005-01-18 2006-12-13 삼성전자주식회사 초임계 유체와 친화성을 갖는 고분자 분산제

Also Published As

Publication number Publication date
JPS634417A (ja) 1988-01-09
KR950011812B1 (ko) 1995-10-10
US4719121A (en) 1988-01-12
EP0250205A2 (en) 1987-12-23
EP0250205A3 (en) 1989-02-22
EP0250205B1 (en) 1990-07-18
DE3763764D1 (de) 1990-08-23
CA1310653C (en) 1992-11-24

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A201 Request for examination
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee