ATA800476A - Verfahren zur herstellung von modifiziertem ferromagnetischem chromdioxid - Google Patents

Verfahren zur herstellung von modifiziertem ferromagnetischem chromdioxid

Info

Publication number: ATA800476A
Authority: AT; Austria
Prior art keywords: manufacturing modified; modified ferromagnetic; chrome dioxide; dioxide; ferromagnetic chrome
Prior art date: 1975-10-31

Application number

AT800476A

Other languages

English (en)

Other versions

AT356062B (de

Inventor

Giampiero Basile

Antonio Mazza

Original Assignee

Montedison Spa

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.)

1975-10-31

Filing date

1976-10-28

Publication date

1979-09-15

1976-10-28 Application filed by Montedison Spa filed Critical Montedison Spa

1979-09-15 Publication of ATA800476A publication Critical patent/ATA800476A/de

1980-04-10 Application granted granted Critical

1980-04-10 Publication of AT356062B publication Critical patent/AT356062B/de

Links

VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title 1
230000005294 ferromagnetic effect Effects 0.000 title 1
238000004519 manufacturing process Methods 0.000 title 1
238000000034 method Methods 0.000 title 1

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
- G11B5/70636—CrO2
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
- C01G37/027—Chromium dioxide
- 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
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- 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)
Inorganic Chemistry (AREA)
Hard Magnetic Materials (AREA)
Inorganic Compounds Of Heavy Metals (AREA)
Magnetic Record Carriers (AREA)
Chemical Treatment Of Metals (AREA)

AT800476A 1975-10-31 1976-10-28 Verfahren zur herstellung von modifiziertem ferromagnetischem chromdioxid AT356062B (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT28915/75A IT1045191B (it)	1975-10-31	1975-10-31	Procedimento per la produzione di biossido di cromo ferromagnetico

Publications (2)

Publication Number	Publication Date
ATA800476A true ATA800476A (de)	1979-09-15
AT356062B AT356062B (de)	1980-04-10

Family

ID=11224583

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AT800476A AT356062B (de)	1975-10-31	1976-10-28	Verfahren zur herstellung von modifiziertem ferromagnetischem chromdioxid

Country Status (17)

Country	Link
JP (1)	JPS5274597A (de)
AT (1)	AT356062B (de)
AU (1)	AU502999B2 (de)
BE (1)	BE847812A (de)
BR (1)	BR7607234A (de)
CA (1)	CA1090555A (de)
CH (1)	CH625193A5 (de)
CS (1)	CS207373B2 (de)
DD (1)	DD127640A5 (de)
DE (1)	DE2648305C3 (de)
DK (1)	DK481376A (de)
ES (1)	ES452891A1 (de)
FR (1)	FR2329594A1 (de)
GB (1)	GB1524576A (de)
IT (1)	IT1045191B (de)
NL (1)	NL7611785A (de)
SE (1)	SE7611815L (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4524008A (en) *	1983-12-16	1985-06-18	E. I. Du Pont De Nemours And Company	Controlled initiation chromium dioxide synthesis
DE3728453A1 (de) *	1987-08-26	1989-03-09	Basf Ag	Verfahren zur herstellung von modifiziertem, ferromagnetischem chromdioxid
DE3837646A1 (de) *	1988-11-05	1990-05-10	Basf Ag	Nadelfoermiges, im wesentlichen aus chromdioxid bestehendes, ferromagnetisches material
DE4339841A1 (de) *	1993-11-23	1995-05-24	Basf Magnetics Gmbh	Feinteiliges nadfelförmiges magnetisches modifiziertes Chromdioxid

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2885365A (en) *	1956-10-22	1959-05-05	Du Pont	Ruthenium-modified chromium oxide ferromagnetic compositions, their pre-aration and use
DE1467238A1 (de) *	1963-07-24	1969-01-23
US3278263A (en) *	1964-11-27	1966-10-11	Du Pont	Ferromagnetic chromium dioxide and preparation thereof
CH468923A (de) *	1967-07-21	1969-02-28	Ferag Ag	Transporteinrichtung für in einer Schuppenformation anfallende flächenhafte Gebilde
DE1802469A1 (de) *	1968-10-11	1971-10-28	Bayer Ag	Verfahren zur Herstellung von ferromagnetischem Chromdioxid
DE1922409A1 (de) *	1969-05-02	1970-11-12	Bayer Ag	Verfahren zur Herstellung von ferromagnetischem Chromdioxid
DE2022820C3 (de) *	1970-05-11	1980-01-03	Basf Ag, 6700 Ludwigshafen	Verfahren zur Herstellung von hochkoerzitivem Chromdioxid
AU452489B2 (en) *	1971-03-04	1974-08-16	Montecatini Edisons. P. A	Process for preparing ferromagnetic chromium dioxide
JPS497198A (de) *	1972-05-12	1974-01-22
IT956230B (it) *	1972-04-22	1973-10-10	Montedison Spa	Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione

1975
- 1975-10-31 IT IT28915/75A patent/IT1045191B/it active
1976
- 1976-10-25 SE SE7611815A patent/SE7611815L/xx unknown
- 1976-10-25 CH CH1351376A patent/CH625193A5/it not_active IP Right Cessation
- 1976-10-25 NL NL7611785A patent/NL7611785A/xx not_active Application Discontinuation
- 1976-10-25 DK DK481376A patent/DK481376A/da not_active Application Discontinuation
- 1976-10-26 DE DE2648305A patent/DE2648305C3/de not_active Expired
- 1976-10-26 CA CA264,248A patent/CA1090555A/en not_active Expired
- 1976-10-27 CS CS766928A patent/CS207373B2/cs unknown
- 1976-10-27 BR BR7607234A patent/BR7607234A/pt unknown
- 1976-10-28 FR FR7632529A patent/FR2329594A1/fr active Granted
- 1976-10-28 DD DD195502A patent/DD127640A5/xx unknown
- 1976-10-28 AT AT800476A patent/AT356062B/de not_active IP Right Cessation
- 1976-10-28 AU AU19118/76A patent/AU502999B2/en not_active Expired
- 1976-10-29 GB GB45138/76A patent/GB1524576A/en not_active Expired
- 1976-10-29 BE BE171938A patent/BE847812A/xx not_active IP Right Cessation
- 1976-10-29 JP JP51130370A patent/JPS5274597A/ja active Granted
- 1976-10-30 ES ES452891A patent/ES452891A1/es not_active Expired

Also Published As

Publication number	Publication date
ES452891A1 (es)	1977-10-16
SE7611815L (sv)	1977-05-01
NL7611785A (nl)	1977-05-03
BE847812A (fr)	1977-04-29
CH625193A5 (en)	1981-09-15
JPS5722893B2 (de)	1982-05-15
DD127640A5 (de)	1977-10-05
AU502999B2 (en)	1979-08-16
FR2329594B1 (de)	1981-07-31
DE2648305B2 (de)	1980-07-03
FR2329594A1 (fr)	1977-05-27
JPS5274597A (en)	1977-06-22
AT356062B (de)	1980-04-10
DK481376A (da)	1977-05-01
BR7607234A (pt)	1977-09-13
DE2648305A1 (de)	1977-05-12
DE2648305C3 (de)	1982-11-25
GB1524576A (en)	1978-09-13
IT1045191B (it)	1980-05-10
CS207373B2 (en)	1981-07-31
CA1090555A (en)	1980-12-02
AU1911876A (en)	1978-05-04

Legal Events

Date	Code	Title	Description
1983-06-15	ELJ	Ceased due to non-payment of the annual fee

Publication	Publication Date	Title
AT354447B (de)	1979-01-10	Verfahren zur herstellung von indolderivaten
DD127900A5 (de)	1977-10-19	Verfahren zur herstellung von mercaptoazetidin-derivaten
AT344899B (de)	1978-08-10	Verfahren zur herstellung von anthracyclinglycosiden
ATA851476A (de)	1979-12-15	Verfahren zur herstellung von nahrungsmitteln
ATA460976A (de)	1978-03-15	Verfahren zur herstellung von dienopolymerisaten oder -copolymerisaten
AT351526B (de)	1979-07-25	Verfahren zur herstellung von 4-niederalkyl-5- cyano-oxazolen
AT345252B (de)	1978-09-11	Verfahren zur herstellung von magnetoxiden
AT356676B (de)	1980-05-12	Verfahren zur herstellung von distickstoff- monoxid
ATA463777A (de)	1979-02-15	Verfahren zur herstellung von ureafomrkoernern
AT337140B (de)	1977-06-10	Verfahren zur herstellung von ferromagnetischem chromdioxid
AT348499B (de)	1979-02-26	Verfahren zur herstellung von aethylchlorthioformiat
ATA800476A (de)	1979-09-15	Verfahren zur herstellung von modifiziertem ferromagnetischem chromdioxid
AT361639B (de)	1981-03-25	Verfahren zur herstellung von 5-androsten-17- -on-derivaten
AT351277B (de)	1979-07-10	Verfahren zur herstellung von molybdaen- legierungen
ATA193675A (de)	1978-03-15	Verfahren zur herstellung von metaboratlosungen
AT350582B (de)	1979-06-11	Verfahren zur herstellung von n-mehtyl-harn- stoffen
AT350036B (de)	1979-05-10	Verfahren zur herstellung von zinnii-sulfat
AT346358B (de)	1978-11-10	Verfahren zur herstellung von 4-chlor-2- butinyl-m-chlorcarbanilat
AT376633B (de)	1984-12-10	Verfahren zur herstellung von phosphornitriden
PT64875B (de)	1977-07-22	Verfahren zur herstellung von n-alenyl-2-aminomethyl-pyrrolidinen
AT342323B (de)	1978-03-28	Verfahren zur herstellung von zundsteinen
AT351676B (de)	1979-08-10	Verfahren zur herstellung von 7-alkoxy-3- chlormethyl-3-cephemen
ATA297777A (de)	1978-06-15	Verfahren zur herstellung von hexachlorcyclobuten
ATA341075A (de)	1978-08-15	Verfahren zur herstellung von bauelementen
DD130651A5 (de)	1978-04-19	Verfahren zur herstellung von kreuzspulen