CH582111A5 - - Google Patents

Info

Publication number: CH582111A5
Authority: CH; Switzerland

Application number

CH668972A

Original Assignee

Bayer Ag

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.)

1971-05-06

Filing date

1972-05-05

Publication date

1976-11-30

1971-05-06 Priority claimed from DE19712122312 external-priority patent/DE2122312C3/de

1972-05-05 Application filed by Bayer Ag filed Critical Bayer Ag

1976-11-30 Publication of CH582111A5 publication Critical patent/CH582111A5/xx

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
- 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
- G11B5/70663—Preparation processes specially adapted therefor, e.g. using stabilising agents
- 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
- C01G49/06—Ferric oxide [Fe2O3]
- 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
- G11B5/70647—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
- G11B5/706—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
- 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
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
- 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
- C01P2006/42—Magnetic properties
- 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
- C01P2006/80—Compositional purity

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Health & Medical Sciences (AREA)
Dermatology (AREA)
General Health & Medical Sciences (AREA)
Inorganic Chemistry (AREA)
Hard Magnetic Materials (AREA)
Compounds Of Iron (AREA)

CH668972A 1971-05-06 1972-05-05 CH582111A5 (mo)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19712122312 DE2122312C3 (de)		1971-05-06	Verfahren zur Herstellung von magnetischen Eisenoxiden mit verbesserten Eigenschaften

Publications (1)

Publication Number	Publication Date
CH582111A5 true CH582111A5 (mo)	1976-11-30

Family

ID=5806972

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH668972A CH582111A5 (mo)	1971-05-06	1972-05-05

Country Status (9)

Country	Link
JP (1)	JPS553295B1 (mo)
BE (1)	BE783021A (mo)
CA (1)	CA995874A (mo)
CH (1)	CH582111A5 (mo)
FR (1)	FR2135342B1 (mo)
GB (1)	GB1385777A (mo)
IT (1)	IT957712B (mo)
NL (1)	NL7206131A (mo)
PL (1)	PL82318B1 (mo)

Families Citing this family (5)

* 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
DE2805405A1 (de) *	1978-02-09	1979-08-16	Basf Ag	Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
DE2805621A1 (de) *	1978-02-10	1979-08-23	Basf Ag	Verfahren zur herstellung von nadelfoermigen, ferrimagnetischen eisenoxiden
JPS5891039A (ja) *	1981-11-27	1983-05-30	Ishihara Sangyo Kaisha Ltd	磁気記録材料用針状α−ＦｅＯＯＨの製造方法
DE3413752A1 (de) *	1984-04-12	1985-10-24	Basf Ag, 6700 Ludwigshafen	Verfahren zur herstellung isotroper magnetischer, kobalthaltiger eisenoxide

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2388659A (en) *	1943-07-12	1945-11-06	Interchem Corp	Manufacture of pigments
FR1587959A (mo) *	1967-11-25	1970-04-03

1972
- 1972-05-03 GB GB2056072A patent/GB1385777A/en not_active Expired
- 1972-05-04 BE BE783021A patent/BE783021A/xx not_active IP Right Cessation
- 1972-05-04 CA CA141,288A patent/CA995874A/en not_active Expired
- 1972-05-04 IT IT5003772A patent/IT957712B/it active
- 1972-05-04 JP JP4378772A patent/JPS553295B1/ja active Pending
- 1972-05-05 NL NL7206131A patent/NL7206131A/xx active Search and Examination
- 1972-05-05 FR FR7216212A patent/FR2135342B1/fr not_active Expired
- 1972-05-05 PL PL15519172A patent/PL82318B1/pl unknown
- 1972-05-05 CH CH668972A patent/CH582111A5/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
BE783021A (fr)	1972-11-06
DE2122312B2 (de)	1976-12-09
PL82318B1 (mo)	1975-10-31
JPS553295B1 (mo)	1980-01-24
GB1385777A (en)	1975-02-26
CA995874A (en)	1976-08-31
DE2122312A1 (de)	1972-11-23
FR2135342A1 (mo)	1972-12-15
NL7206131A (mo)	1972-11-08
IT957712B (it)	1973-10-20
FR2135342B1 (mo)	1978-09-08

Legal Events

Date	Code	Title	Description
1992-07-31	PL	Patent ceased
2024-10-31	PL	Patent ceased

Publication	Publication Date	Title
CS163843B1 (mo)	1975-11-07
CS157213B1 (mo)	1974-09-16
CS170198B2 (mo)	1976-08-27
FR2135342B1 (mo)	1978-09-08
CS172379B2 (mo)	1976-12-29
CS177464B1 (mo)	1977-07-29
AU3005371A (mo)	1972-12-21
CS166948B1 (mo)	1976-03-29
CS151150B1 (mo)	1973-09-17
CS151187B1 (mo)	1973-09-17
CS152138B1 (mo)	1973-12-19
CS159415B1 (mo)	1975-01-31
CS162891B1 (mo)	1975-07-15
CS169820B2 (mo)	1976-07-29
CS160991B1 (mo)	1975-05-04
CS149202B1 (mo)	1973-05-24
CS170186B2 (mo)	1976-08-27
CS153368B1 (mo)	1974-02-25
CH562293A5 (mo)	1975-05-30
CH578630A5 (mo)	1976-08-13
CH579039A5 (mo)	1976-08-31
CH1104171A4 (mo)	1973-01-31
CH272971A4 (mo)	1974-11-15
CH585173A5 (mo)	1977-02-28
CH246272A4 (mo)	1974-05-31