KR910008089A - 크롬-함유 자기 산화철 안료, 이의 제조방법 및 용도 - Google Patents

크롬-함유 자기 산화철 안료, 이의 제조방법 및 용도 Download PDF

Info

Publication number
KR910008089A
KR910008089A KR1019900015474A KR900015474A KR910008089A KR 910008089 A KR910008089 A KR 910008089A KR 1019900015474 A KR1019900015474 A KR 1019900015474A KR 900015474 A KR900015474 A KR 900015474A KR 910008089 A KR910008089 A KR 910008089A
Authority
KR
South Korea
Prior art keywords
iron oxide
oxide pigment
chromium
pigment
coated
Prior art date
Application number
KR1019900015474A
Other languages
English (en)
Inventor
제럼 요하네스
빔베르스키 베르너
카트라인 헨드릭
반 본 칼-하인쯔
보디쉐 페터
Original Assignee
클라우스 데너, 요아힘 그렘
바이엘 아크티엔게젤샤프트
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 클라우스 데너, 요아힘 그렘, 바이엘 아크티엔게젤샤프트 filed Critical 클라우스 데너, 요아힘 그렘
Publication of KR910008089A publication Critical patent/KR910008089A/ko

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/22—Compounds of iron
    • C09C1/24—Oxides of iron
    • 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
    • G11B5/70652—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 gamma - Fe2 O3
    • G11B5/70657—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 gamma - Fe2 O3 with a skin
    • 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
    • G11B5/70647—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 with a skin
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

내용 없음

Description

크롬-함유 자기 산화철 안료, 이의 제조방법 및 용도
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (11)

  1. 피복된 안료의 제타 전위측정에 의해 결정된 등전점이 pH 8내지 9.5임을 특징으로 하는, 크롬 화합물로 피복된 침상(needle shape)자기 산화철 안료.
  2. 제1항에 있어서, 크롬 함량이 산화철 안료의 중량을 기준하여 0.1내지 10중량%인 자기 산화철 안료.
  3. 제1항에 있어서, 크롬 함량이 산화철 안료의 중량을 기준하여 0.5내지 3중량%인 자기 산화철 안료.
  4. 제1항에 있어서, 산화철 안료가 r-Fe2O3안료인 자기 산화철 안료.
  5. 제1항에 있어서, 산화철 안료가 베르톨라이드 산화철 안료인 자기 산화철 안료.
  6. 제1항에 있어서, 산화철 안료를 코발트로 용적-도핑한 자기 산화철 안료.
  7. 제1항에 있어서, 산화철 안료를 코발트로 표면-피복시킨 자기 산화철 안료.
  8. 제1항에 있어서, 산화철 안료가 Fe3O4안료인 자기 산화철 안료.
  9. 크롬화합물을 pH 3내지 10범위의 알칼리를 가하여 크롬(III) 용액으로부터 침전시킴을 특징으로하는, 제1항의 크롬-피복된 산화철 안료의 제조 방법.
  10. 제9항에 있어서, 알칼리를 pH6내지 8의 범위로 가하는 방법.
  11. 제1항의 크롬-피복된 산화철 안료를 함유하는 자기 테이프.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900015474A 1989-10-04 1990-09-28 크롬-함유 자기 산화철 안료, 이의 제조방법 및 용도 KR910008089A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3933183A DE3933183A1 (de) 1989-10-04 1989-10-04 Chromhaltige magnetische eisenoxidpigmente, verfahren zu ihrer herstellung sowie deren verwendung
DE39331830 1989-10-04

Publications (1)

Publication Number Publication Date
KR910008089A true KR910008089A (ko) 1991-05-30

Family

ID=6390835

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900015474A KR910008089A (ko) 1989-10-04 1990-09-28 크롬-함유 자기 산화철 안료, 이의 제조방법 및 용도

Country Status (4)

Country Link
EP (1) EP0421213A3 (ko)
JP (1) JPH03131666A (ko)
KR (1) KR910008089A (ko)
DE (1) DE3933183A1 (ko)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6691512B2 (ja) 2017-06-23 2020-04-28 富士フイルム株式会社 磁気記録媒体
CN111164686B (zh) 2017-09-29 2021-06-08 富士胶片株式会社 磁带及磁记录回放装置
CN113436653B (zh) 2017-09-29 2022-04-26 富士胶片株式会社 磁带及磁记录回放装置
JP6812480B2 (ja) * 2018-03-23 2021-01-13 富士フイルム株式会社 磁気テープおよび磁気テープ装置
US11361792B2 (en) 2018-03-23 2022-06-14 Fujifilm Corporation Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device
US11361793B2 (en) 2018-03-23 2022-06-14 Fujifilm Corporation Magnetic tape having characterized magnetic layer and magnetic recording and reproducing device
US10672426B2 (en) 2018-03-23 2020-06-02 Fujifilm Corporation Magnetic tape having servo pattern and characterized magnetic layer, and magnetic tape device
US11514944B2 (en) 2018-03-23 2022-11-29 Fujifilm Corporation Magnetic tape and magnetic tape device
US11514943B2 (en) 2018-03-23 2022-11-29 Fujifilm Corporation Magnetic tape and magnetic tape device
JP6830931B2 (ja) 2018-07-27 2021-02-17 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6784738B2 (ja) 2018-10-22 2020-11-11 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6830945B2 (ja) 2018-12-28 2021-02-17 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP7042737B2 (ja) 2018-12-28 2022-03-28 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP7097834B2 (ja) * 2019-01-31 2022-07-08 富士フイルム株式会社 磁気テープ装置
JP7003073B2 (ja) 2019-01-31 2022-01-20 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気テープ装置
JP6778804B1 (ja) 2019-09-17 2020-11-04 富士フイルム株式会社 磁気記録媒体および磁気記録再生装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139354A (en) * 1961-03-31 1964-06-30 Rca Corp Magnetic recording element containing magnetic particles treated with werner-type complex compound and method of manufacture thereof
US4382982A (en) * 1979-12-07 1983-05-10 Ici Australia Limited Process for protecting magnetic particles with chromium oxide
JPS62295217A (ja) * 1986-06-13 1987-12-22 Hitachi Maxell Ltd 磁気記録媒体

Also Published As

Publication number Publication date
JPH03131666A (ja) 1991-06-05
EP0421213A2 (de) 1991-04-10
DE3933183A1 (de) 1991-04-18
EP0421213A3 (en) 1991-10-09

Similar Documents

Publication Publication Date Title
KR910008089A (ko) 크롬-함유 자기 산화철 안료, 이의 제조방법 및 용도
KR910009851A (ko) 판상 안료가 코팅된 물질
KR840003667A (ko) 열 안정성 산화철 안료 및 이의 제조방법
KR840002017A (ko) 투명 착색 안료
KR910006427A (ko) 자기 산화철 안료, 이의 제조방법 및 이의 용도
KR840008869A (ko) 자기기록용 판상 바륨페라이트입자 및 그의 제조방법
GB1432643A (en) Manufacture of cobalt-modified ypsilon-iron-iii-oxides
KR850008031A (ko) 자기 기록용 판상 아철산 바륨입자와 그 제조방법
GB1441183A (en) Magnetic recording particles
ATE15882T1 (de) Verwendung von 1,3-dialkyl-cyclohexanverbindungen als kosmetische oelkomponente.
KR850007510A (ko) 자성박막
KR890003894A (ko) 열안정성 산화철 안료, 이의 제조방법 및 이의 용도
KR860000677A (ko) 철 마그네틱 피그먼트의 제조방법
DE3777046D1 (de) Magnetische eisenoxidpigmente und verfahren zu ihrer herstellung.
KR880000919A (ko) 자기 기록 매체
KR870007976A (ko) 수불용성 수지용액 미세입자를 함유하는 수성피복조성물
KR880004049A (ko) 산화철 자기안료 및 이의 제조방법
BR9200347A (pt) Pigmento nacarado de oxicloreto de bismuto tendo melhor estabilidade ao tempo e processo de producao e preparacao do mesmo
KR830003786A (ko) 철-크로옴-코발트-등의 자기합금
KR850005124A (ko) 소결방지제-함유탄화철 침상입자물질
EP0401000A3 (en) Plate-like magnetite particles and process for producing the same
JPS54122103A (en) Magnetic recording medium and production of the same
KR890007231A (ko) 자기기록매체
JPS5611964A (en) Preparation of magnetic pigment
JPS57135439A (en) Magnetic recording medium

Legal Events

Date Code Title Description
N231 Notification of change of applicant
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid