KR930017818A - 저 보자력 산화철 안료 및 그의 제조 방법 - Google Patents

저 보자력 산화철 안료 및 그의 제조 방법 Download PDF

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Publication number
KR930017818A
KR930017818A KR1019930002498A KR930002498A KR930017818A KR 930017818 A KR930017818 A KR 930017818A KR 1019930002498 A KR1019930002498 A KR 1019930002498A KR 930002498 A KR930002498 A KR 930002498A KR 930017818 A KR930017818 A KR 930017818A
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KR
South Korea
Prior art keywords
iron oxide
cobalt
core
coating
pigment
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KR1019930002498A
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English (en)
Inventor
판 본 카를-하인츠
카트라인 헨드릭
프란츠 게르하르트
Original Assignee
귄터 슈마허, 클라우스 데너
바이엘 악티엔게젤샤프트
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Application filed by 귄터 슈마허, 클라우스 데너, 바이엘 악티엔게젤샤프트 filed Critical 귄터 슈마허, 클라우스 데너
Publication of KR930017818A publication Critical patent/KR930017818A/ko

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    • 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
    • G11B5/706—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 composition of the magnetic material
    • G11B5/70626—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 composition of the magnetic material containing non-metallic substances
    • G11B5/70642—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 composition of the magnetic material containing non-metallic substances iron oxides
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • G11B5/70694—Non-stoechiometric ferro-ferrioxydes, e.g. berthollide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • 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
    • G11B5/712—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 surface treatment or coating of magnetic particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

본 발명은 다음 조성식(Fex 2+, Fe2 3+)O3+x(여기서, 0.3＜x＜0.75)으로 표시되는 코어를 갖고, 또한, 임의로 이 코어와 코발트 코팅 사시에 Zn함유 베르톨라이드의 중간 코팅을 함유하는, 코발트로 코팅된 코팅된 침상 베르톨라이드 산화철 안료에 관한 것이다. 이 안료는 먼저 코어를 베르톨라이드 및 가용성 아연 화합물로 코팅시킨 후, 코발트 화합물로 코팅시켜 제조된다.

Description

저 보자력 산화철 안료 및 그의 제조 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (11)

  1. 다음 조성식(Fex 2+, Fe2 3+)O3+x(여기서, 0.3＜x＜0.75)으로 표시되는 산화철 코어로 이루어지고, 이 코어의 중량을 기준으로 0.1 내지 1.5중량%의 코발트로 코팅된 침상 자기 베르톨라이드 산화철 안료.
  2. 제1항에 있어서, 다음 조성식(Fex 2+, Fe2 3+)O3+x(여기서, 0.3＜x＜0.75)으로 표시되고, Zn이 코어의 중량을 기준으로 0.1 내지 2중량%의 양으로 존재하는 베르톨라이드 Zn함유 화합물의 추가 코팅이 코발트 코팅과 산화철 코어 사이에 위치하는 것인 자기 산화철 안료.
  3. 제1항에 있어서, 비(比)포화 자기화가 102mWb·m/㎏을 초과하고, 보자력장 강도가 30 내지 37kA/m일때, DIN IEC 94 Part 5에 따라 안료를 오디오 테이프에 혼입시킨 후 측정한 인쇄 감쇠가 12㎛의 기재 필름 두께 및 11 g/㎡의 회분 함량을 기준으로 50dB를 초과하는 것인 자기 산화철 안료.
  4. 제2항에 있어서, 비(比)포화 자기화가 102mWb·m/㎏을 초과하고, 보자력장 강도가 30 내지 37kA/m일때, DIN IEC 94 Part 5에 따라 안료를 오디오 테이프에 혼입시킨 후 측정한 인쇄 감쇠가 12㎛의 기재 필름두께 및 11 g/㎡의 회분 함량을 기준으로 50dB를 초과하는 것인 자기 산화철 안료.
  5. 다음 조성식Fex 2+, Fe2 3+)O3+x(여기서, 0.3＜x＜0.75)으로 표시되는 자기 베르톨라이드 산화철 물질을 가용성 아연 화합물이 첨가된 베르톨라이드 화합물로 코팅시키고, 이어서 제2단계로 코어 재료를 코발트 화합물로 코팅시키는 것으로 이루어진 제2항 기재의 자기 산화철 안료의 제조 방법.
  6. 제5항에 있어서, 가용성 아연 화합물이, Zn이 코어의 중량을 기준으로 0.1내지 2중량%의 양으로 안료내에 존재하도록 하는 양으로 첨가되는 방법.
  7. 제5항에 있어서, 제1코팅이 산화 조건 하에서 수행되는 방법.
  8. 제7항에 있어서, 산화 조건이 공기를 사용함으로써 생성되는 방법.
  9. 제5항에 있어서, 제1코팅이 알칼리성 매질 중에서 도포되는 방법.
  10. 제5항에 있어서, 코발트를 사용한 코팅이 알칼리성 매질 중의 가용성 코발트 염으로 수행되는 방법.
  11. 제10항에 있어서, 코발트염이 CoSO4인 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930002498A 1992-02-25 1993-02-23 저 보자력 산화철 안료 및 그의 제조 방법 KR930017818A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4205634A DE4205634A1 (de) 1992-02-25 1992-02-25 Niederkoerzitive eisenoxidpigmente sowie verfahren zu deren herstellung
DEP4205634.9 1992-02-25

Publications (1)

Publication Number Publication Date
KR930017818A true KR930017818A (ko) 1993-09-20

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ID=6452455

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KR1019930002498A KR930017818A (ko) 1992-02-25 1993-02-23 저 보자력 산화철 안료 및 그의 제조 방법

Country Status (4)

Country Link
US (1) US5480570A (ko)
JP (1) JPH0669015A (ko)
KR (1) KR930017818A (ko)
DE (1) DE4205634A1 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005109304A (ja) 2003-10-01 2005-04-21 Canon Inc 照明光学系及び露光装置
KR102308465B1 (ko) 2018-07-16 2021-10-01 주식회사 엘지화학 산화철을 포함하는 리튬 이차전지용 양극 및 이를 구비한 리튬 이차전지

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974079A (en) * 1971-05-06 1976-08-10 Bayer Aktiengesellschaft Production of gamma iron oxide
US3931025A (en) * 1973-09-21 1976-01-06 Bayer Aktiengesellschaft Magnetic iron oxides with improved orientability and a process for their production
JPS525497A (en) * 1975-07-02 1977-01-17 Fuji Photo Film Co Ltd Ferromagnetic grit manufacturing process
GB1603213A (en) * 1977-04-20 1981-11-18 Hitachi Maxell Cobalt containing iron oxide magnetic particles and method for the preparation of the same
JPS61252605A (ja) * 1985-05-01 1986-11-10 Sony Corp 酸化鉄磁性粉末
DE3631193A1 (de) * 1986-09-13 1988-03-24 Bayer Ag Magnetische eisenoxidpigmente und verfahren zu ihrer herstellung
EP0371384B1 (en) * 1988-12-01 1995-06-21 Ishihara Sangyo Kaisha, Ltd. Process for producing magnetic iron oxide particles for magnetic recording
DE3912976A1 (de) * 1989-04-20 1990-10-25 Basf Ag Nadelfoermige, kobaltmodifizierte eisenoxide und verfahren zu ihrer herstellung

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DE4205634A1 (de) 1993-08-26
JPH0669015A (ja) 1994-03-11
US5480570A (en) 1996-01-02

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