BR7607234A - Processo para a preparacao de dioxido de cromo ferromagnetico - Google Patents

Processo para a preparacao de dioxido de cromo ferromagnetico

Info

Publication number: BR7607234A
Authority: BR; Brazil
Prior art keywords: preparation; ferromagnetic; chrome dioxide; dioxide; ferromagnetic chrome
Prior art date: 1975-10-31

Application number

BR7607234A

Other languages

English (en)

Portuguese (pt)

Inventor

G Basile

A 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

1976-10-27

Publication date

1977-09-13

1976-10-27 Application filed by Montedison Spa filed Critical Montedison Spa

1977-09-13 Publication of BR7607234A publication Critical patent/BR7607234A/pt

Links

VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title 1
230000005294 ferromagnetic effect Effects 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)

BR7607234A 1975-10-31 1976-10-27 Processo para a preparacao de dioxido de cromo ferromagnetico BR7607234A (pt)

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 (1)

Publication Number	Publication Date
BR7607234A true BR7607234A (pt)	1977-09-13

Family

ID=11224583

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR7607234A BR7607234A (pt)	1975-10-31	1976-10-27	Processo para a preparacao de dioxido de cromo ferromagnetico

Country Status (17)

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

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
DE1467328B2 (de) *	1963-07-24	1971-06-16	Farbenfabriken Bayer AG, 5090 Le verkusen	Ferromagnetisches modifiziertes chromdioxid
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 (cs) *	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 CH CH1351376A patent/CH625193A5/it not_active IP Right Cessation
- 1976-10-25 SE SE7611815A patent/SE7611815L/xx unknown
- 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 BR BR7607234A patent/BR7607234A/pt unknown
- 1976-10-27 CS CS766928A patent/CS207373B2/cs unknown
- 1976-10-28 DD DD195502A patent/DD127640A5/xx unknown
- 1976-10-28 FR FR7632529A patent/FR2329594A1/fr active Granted
- 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 JP JP51130370A patent/JPS5274597A/ja active Granted
- 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
- 1976-10-30 ES ES452891A patent/ES452891A1/es not_active Expired

Also Published As

Publication number	Publication date
BE847812A (fr)	1977-04-29
FR2329594B1 (cs)	1981-07-31
ATA800476A (de)	1979-09-15
CH625193A5 (en)	1981-09-15
DK481376A (da)	1977-05-01
GB1524576A (en)	1978-09-13
ES452891A1 (es)	1977-10-16
AT356062B (de)	1980-04-10
CA1090555A (en)	1980-12-02
DD127640A5 (cs)	1977-10-05
AU502999B2 (en)	1979-08-16
DE2648305C3 (de)	1982-11-25
AU1911876A (en)	1978-05-04
CS207373B2 (en)	1981-07-31
NL7611785A (nl)	1977-05-03
IT1045191B (it)	1980-05-10
DE2648305A1 (de)	1977-05-12
JPS5722893B2 (cs)	1982-05-15
SE7611815L (sv)	1977-05-01
JPS5274597A (en)	1977-06-22
DE2648305B2 (de)	1980-07-03
FR2329594A1 (fr)	1977-05-27

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BR7802124A (pt)	1979-04-03	Processo para estabilizacao de dioxido de cromo ferromagnetico
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BR7604960A (pt)	1977-08-09	Processo para a preparacao de resorcinois
BR7700679A (pt)	1977-10-11	Processo aperfeicoado para a preparacao de meta-ariloxi-benzaldeidos
BR7603371A (pt)	1977-02-15	Processo para a preparacao de material de hidroformilacao
BR7602603A (pt)	1976-11-09	Processo para a preparacao de 3-metilpiridina
BR7600926A (pt)	1977-05-10	Processo para a preparacao de pigmento de verde de oxido de cromo
BR7502780A (pt)	1976-03-16	Processo para a preparacao de corantes de complexo de cromo
BR7602624A (pt)	1976-11-23	Processo para a preparacao de acetoacetilarilamidas
BR7502784A (pt)	1976-03-16	Processo para a preparacao de dioxido de cromo ferromagnetico
BR7608450A (pt)	1977-12-06	Processo para a preparacao de organosiloxanas
BR7602185A (pt)	1976-10-05	Processo para a preparacao de azocorantes
BR7603021A (pt)	1977-05-31	Processo para a producao de 2-aril-2h-benzotriazois
BR7604436A (pt)	1978-01-31	Processo para a preparacao de derivados de benzil-nitrila substituidos
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BR7603027A (pt)	1977-05-31	Processo para a producao de 2-aril-2h benzotriazois
BR7607850A (pt)	1977-10-25	Processo para a producao de tiocloroformiato de etila
BR7607840A (pt)	1977-10-11	Processo aperfeicoado para a producao de tetra-hidro-furano
BR7605392A (pt)	1977-08-16	Processo para preparacao de um fosforo-dicloreto-tiolato
BR7601734A (pt)	1976-09-21	Processo para a preparacao de brometos de meta-ariloxi benzila
BR7603023A (pt)	1977-05-31	Processo para a producao de 2-aril-2h-benzotriazois
BR7603024A (pt)	1977-05-31	Processo para a producao de 2-aril-2h-benzotriazois
BR7600708A (pt)	1976-08-31	Processo para a preparacao de corantes xantenicos