NL7505204A - Werkwijze voor de bereiding van ferromagnetisch chroomdioxyde. - Google Patents

Werkwijze voor de bereiding van ferromagnetisch chroomdioxyde.

Info

Publication number: NL7505204A
Authority: NL; Netherlands
Prior art keywords: preparation; ferromagnetic; chrome dioxide; dioxide; ferromagnetic chrome
Prior art date: 1974-05-09

Application number

NL7505204A

Other languages

English (en)

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.)

1974-05-09

Filing date

1975-05-02

Publication date

1975-11-11

1975-05-02 Application filed by Montedison Spa filed Critical Montedison Spa

1975-11-11 Publication of NL7505204A publication Critical patent/NL7505204A/nl

Links

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
- 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
- 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
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
- 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)
Engineering & Computer Science (AREA)
Nanotechnology (AREA)
Organic Chemistry (AREA)
Materials Engineering (AREA)
General Physics & Mathematics (AREA)
Physics & Mathematics (AREA)
Crystallography & Structural Chemistry (AREA)
Condensed Matter Physics & Semiconductors (AREA)
Inorganic Chemistry (AREA)
Composite Materials (AREA)
Hard Magnetic Materials (AREA)
Inorganic Compounds Of Heavy Metals (AREA)
Paints Or Removers (AREA)
Magnetic Record Carriers (AREA)

NL7505204A 1974-05-09 1975-05-02 Werkwijze voor de bereiding van ferromagnetisch chroomdioxyde. NL7505204A (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT22489/74A IT1012202B (it)	1974-05-09	1974-05-09	Procedimento per la produzione di biossido di cromo ferromagnetico

Publications (1)

Publication Number	Publication Date
NL7505204A true NL7505204A (nl)	1975-11-11

Family

ID=11196949

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7505204A NL7505204A (nl)	1974-05-09	1975-05-02	Werkwijze voor de bereiding van ferromagnetisch chroomdioxyde.

Country Status (17)

Country	Link
US (1)	US3979310A (nl)
JP (1)	JPS5521445B2 (nl)
AT (1)	AT337140B (nl)
BE (1)	BE828887A (nl)
BR (1)	BR7502784A (nl)
CA (1)	CA1049250A (nl)
CH (1)	CH617910A5 (nl)
CS (1)	CS324775A2 (nl)
DD (1)	DD118050A5 (nl)
DE (1)	DE2520030C3 (nl)
DK (1)	DK194875A (nl)
FR (1)	FR2270206A1 (nl)
GB (1)	GB1504166A (nl)
IT (1)	IT1012202B (nl)
NL (1)	NL7505204A (nl)
SE (1)	SE406243B (nl)
SU (1)	SU612618A3 (nl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2861999D1 (en) *	1977-10-04	1982-10-07	Anvar	Novel ferromagnetic material based on chromium dioxide and rhodium dioxide, and its preparation
FR2433483A2 (fr) *	1978-08-18	1980-03-14	Anvar	Materiau ferromagnetique a base de dioxyde de chrome et de dioxyde de rhodium et son obtention
DE3536116A1 (de) *	1985-10-10	1987-04-16	Basf Ag	Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid
US4698220A (en) *	1986-03-28	1987-10-06	E. I. Du Pont De Nemours And Company	Partitioned reduction process for ferromagnetic chromium dioxide
US4769165A (en) *	1987-01-20	1988-09-06	E. I. Du Pont De Nemours And Company	Process for synthesis of ferromagnetic chromium dioxide
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
EP1534634A2 (en) *	2002-08-29	2005-06-01	Tata Institute of Fundamental Research	Chromium dioxide (cro sb 2 /sb ) and composites of chromium dioxide and other oxides of chromium such as cro sb 2 /sb /cr sb 2 /sb o sb 3 /sb and cro sb 2 /sb /cr sb 2 /sb o sb 5 /sb and process for manufacturing the same

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3034988A (en) *	1958-08-22	1962-05-15	Du Pont	Modified chromium oxide ferromagnetic compositions, their preparation and use
US2923683A (en) *	1957-06-19	1960-02-02	Du Pont	Antimony-modified chromium oxide ferromagnetic compositions, their preparation and use
US3074778A (en) *	1959-09-24	1963-01-22	Du Pont	Process for producing ferromagnetic chromium oxide
US2956955A (en) *	1960-02-12	1960-10-18	Du Pont	Ferromagnetic chromium oxide and method of making
US3117093A (en) *	1960-10-24	1964-01-07	Du Pont	Process for the preparation of ferromagnetic chromium dioxide
US3278263A (en) *	1964-11-27	1966-10-11	Du Pont	Ferromagnetic chromium dioxide and preparation thereof
US3423320A (en) *	1965-12-14	1969-01-21	Du Pont	Preparation of ferromagnetic chromium dioxide
US3449073A (en) *	1965-12-14	1969-06-10	Du Pont	Process for preparing chromium dioxide and product thereof
US3451771A (en) *	1966-10-27	1969-06-24	Du Pont	Preparation of ferromagnetic cro2 by heating cro3 in the presence of o2 and cr2o3
US3529930A (en) *	1968-02-13	1970-09-22	Du Pont	Process for improving ferromagnetic properties of chromium dioxide by heating in an oxidizing environment
US3450491A (en) *	1968-08-01	1969-06-17	Du Pont	Preparation of mcr3o8,where m is an alkali metal,from cro3,cr2o3 and m2cr2o7
US3686031A (en) *	1969-11-26	1972-08-22	Du Pont	Metal phosphate coated ferromagnetic chromium oxide and its preparation
DE2022820C3 (de) *	1970-05-11	1980-01-03	Basf Ag, 6700 Ludwigshafen	Verfahren zur Herstellung von hochkoerzitivem Chromdioxid
US3687726A (en) *	1970-10-19	1972-08-29	Du Pont	Alumina coated chromium dioxide
AU452489B2 (en)	1971-03-04	1974-08-16	Montecatini Edisons. P. A	Process for preparing ferromagnetic chromium dioxide
IT956230B (it) *	1972-04-22	1973-10-10	Montedison Spa	Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione

1974
- 1974-05-09 IT IT22489/74A patent/IT1012202B/it active
1975
- 1975-04-29 US US05/572,655 patent/US3979310A/en not_active Expired - Lifetime
- 1975-05-02 NL NL7505204A patent/NL7505204A/nl not_active Application Discontinuation
- 1975-05-05 DK DK194875A patent/DK194875A/da not_active Application Discontinuation
- 1975-05-05 SE SE7505168A patent/SE406243B/xx unknown
- 1975-05-05 GB GB18771/75A patent/GB1504166A/en not_active Expired
- 1975-05-06 CH CH602475A patent/CH617910A5/it not_active IP Right Cessation
- 1975-05-06 DE DE2520030A patent/DE2520030C3/de not_active Expired
- 1975-05-07 SU SU752130665A patent/SU612618A3/ru active
- 1975-05-07 DD DD185899A patent/DD118050A5/xx unknown
- 1975-05-07 AT AT351675A patent/AT337140B/de not_active IP Right Cessation
- 1975-05-07 BR BR3554/75A patent/BR7502784A/pt unknown
- 1975-05-07 JP JP5537475A patent/JPS5521445B2/ja not_active Expired
- 1975-05-08 CS CS753247A patent/CS324775A2/cs unknown
- 1975-05-08 CA CA226,540A patent/CA1049250A/en not_active Expired
- 1975-05-09 FR FR7514504A patent/FR2270206A1/fr active Pending
- 1975-05-09 BE BE156193A patent/BE828887A/xx unknown

Also Published As

Publication number	Publication date
BE828887A (fr)	1975-11-10
SE406243B (sv)	1979-01-29
IT1012202B (it)	1977-03-10
AU8091275A (en)	1976-11-11
CA1049250A (en)	1979-02-27
GB1504166A (en)	1978-03-15
DD118050A5 (nl)	1976-02-12
DK194875A (da)	1975-11-10
DE2520030B2 (de)	1977-09-15
SE7505168L (sv)	1975-11-10
JPS5521445B2 (nl)	1980-06-10
SU612618A3 (ru)	1978-06-25
JPS50154798A (nl)	1975-12-13
ATA351675A (de)	1976-10-15
CH617910A5 (nl)	1980-06-30
DE2520030C3 (de)	1981-07-09
FR2270206A1 (nl)	1975-12-05
BR7502784A (pt)	1976-03-16
US3979310A (en)	1976-09-07
AT337140B (de)	1977-06-10
DE2520030A1 (de)	1975-11-13
CS324775A2 (en)	1987-08-13

Legal Events

Date	Code	Title	Description
1982-07-01	BV	The patent application has lapsed

Publication	Publication Date	Title
NL7414283A (nl)	1976-01-19	Werkwijze voor de bereiding van silanen.
NL7504572A (nl)	1975-10-21	Werkwijze voor de bereiding van gesubstitueerde formamidinen.
NL7509276A (nl)	1976-02-04	Werkwijze voor de bereiding van tertiaire alkenen.
NL7511492A (nl)	1976-04-21	Werkwijze voor de bereiding van benzothiazinedi- oxydederivaten.
NL7502000A (nl)	1975-08-27	Werkwijze voor de bereiding van magnetiet.
NL153205B (nl)	1977-05-16	Werkwijze voor de bereiding van organotintrihalogeniden.
NL7507803A (nl)	1976-01-20	Werkwijze voor de bereiding van stilbeenderivaten.
NL7510226A (nl)	1976-03-02	Werkwijze voor de bereiding van androstaanderiva- ten.
NL7505204A (nl)	1975-11-11	Werkwijze voor de bereiding van ferromagnetisch chroomdioxyde.
NL7511224A (nl)	1976-03-30	Werkwijze voor de vervaardiging van elektroband.
NL7504135A (nl)	1975-10-07	Werkwijze voor de bereiding van gesubstitueerde indoleninen.
NL7515096A (nl)	1976-06-29	Werkwijze voor de bereiding van pinakolien.
NL7501124A (nl)	1975-08-19	Werkwijze voor de bereiding van organofosfinen.
NL7508232A (nl)	1976-01-13	Werkwijze voor de bereiding van cyclododecatrieen.
NL7509132A (nl)	1976-02-17	Werkwijze voor de bereiding van cefalosporinen.
NL7504016A (nl)	1975-10-28	Werkwijze voor de bereiding van isochinolinen.
NL7505713A (nl)	1975-11-18	Werkwijze voor de bereiding van tetrazoolderi- vaten.
NL7500686A (nl)	1975-07-29	Werkwijze voor de bereiding van cyclopentaan- dionen.
NL7511067A (nl)	1976-03-23	Werkwijze voor de bereiding van orgoteinederi- vaten.
NL7510753A (nl)	1976-03-25	Werkwijze voor de bereiding van 6-chloor-2-chloor- methyl-4-fenylchinazoline-3-oxyde.
NL7514239A (nl)	1976-06-09	Werkwijze voor de verrijking van halogeenantrachi- nonen.
NL7503515A (nl)	1975-09-24	Werkwijze voor de bereiding van metformine-clo- fibraat.
NL7509679A (nl)	1976-02-17	Werkwijze voor de bereiding van difenylbutylpi- peridinen.
NL7503746A (nl)	1975-09-30	Werkwijze voor de bereiding van 2-nitrobenzal- dehyde.
NL7510913A (nl)	1976-03-26	Werkwijze voor de vervaardiging van vormstukken.