CH625193A5 - Process for producing ferromagnetic chromium dioxide - Google Patents
Process for producing ferromagnetic chromium dioxide Download PDFInfo
- Publication number
- CH625193A5 CH625193A5 CH1351376A CH1351376A CH625193A5 CH 625193 A5 CH625193 A5 CH 625193A5 CH 1351376 A CH1351376 A CH 1351376A CH 1351376 A CH1351376 A CH 1351376A CH 625193 A5 CH625193 A5 CH 625193A5
- Authority
- CH
- Switzerland
- Prior art keywords
- tellurium
- chromate
- compound
- process according
- ruthenium
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 34
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 title claims description 19
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 title claims description 19
- 229940090961 chromium dioxide Drugs 0.000 title claims description 12
- 230000005294 ferromagnetic effect Effects 0.000 title claims description 8
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical group [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims description 43
- 229910052714 tellurium Inorganic materials 0.000 claims description 24
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 24
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 21
- 229910052707 ruthenium Inorganic materials 0.000 claims description 21
- ABXXWVKOBZHNNF-UHFFFAOYSA-N chromium(3+);dioxido(dioxo)chromium Chemical compound [Cr+3].[Cr+3].[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O ABXXWVKOBZHNNF-UHFFFAOYSA-N 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 4
- 230000008020 evaporation Effects 0.000 claims description 4
- 150000003304 ruthenium compounds Chemical class 0.000 claims description 3
- 150000003498 tellurium compounds Chemical class 0.000 claims description 3
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- LAJZODKXOMJMPK-UHFFFAOYSA-N tellurium dioxide Chemical compound O=[Te]=O LAJZODKXOMJMPK-UHFFFAOYSA-N 0.000 claims 1
- 239000000047 product Substances 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000006243 chemical reaction Methods 0.000 description 17
- 230000036571 hydration Effects 0.000 description 14
- 238000006703 hydration reaction Methods 0.000 description 14
- 239000002245 particle Substances 0.000 description 13
- 230000005415 magnetization Effects 0.000 description 12
- 239000007789 gas Substances 0.000 description 7
- 230000005291 magnetic effect Effects 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 5
- 239000003607 modifier Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 229910052727 yttrium Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910052712 strontium Chemical group 0.000 description 2
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical group [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- RMXTYBQNQCQHEU-UHFFFAOYSA-N ac1lawpn Chemical group [Cr]#[Cr] RMXTYBQNQCQHEU-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical group [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical group [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004949 mass spectrometry Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical group [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- PTYIPBNVDTYPIO-UHFFFAOYSA-N tellurium tetrabromide Chemical compound Br[Te](Br)(Br)Br PTYIPBNVDTYPIO-UHFFFAOYSA-N 0.000 description 1
- SWLJJEFSPJCUBD-UHFFFAOYSA-N tellurium tetrachloride Chemical compound Cl[Te](Cl)(Cl)Cl SWLJJEFSPJCUBD-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 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)
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 |
|---|---|
| CH625193A5 true CH625193A5 (en) | 1981-09-15 |
Family
ID=11224583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1351376A CH625193A5 (en) | 1975-10-31 | 1976-10-25 | Process for producing ferromagnetic chromium dioxide |
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)
| 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)
| 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 NL NL7611785A patent/NL7611785A/xx not_active Application Discontinuation
- 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 DK DK481376A patent/DK481376A/da not_active Application Discontinuation
- 1976-10-26 CA CA264,248A patent/CA1090555A/en not_active Expired
- 1976-10-26 DE DE2648305A patent/DE2648305C3/de not_active Expired
- 1976-10-27 BR BR7607234A patent/BR7607234A/pt unknown
- 1976-10-27 CS CS766928A patent/CS207373B2/cs unknown
- 1976-10-28 FR FR7632529A patent/FR2329594A1/fr active Granted
- 1976-10-28 AU AU19118/76A patent/AU502999B2/en not_active Expired
- 1976-10-28 DD DD195502A patent/DD127640A5/xx unknown
- 1976-10-28 AT AT800476A patent/AT356062B/de not_active IP Right Cessation
- 1976-10-29 BE BE171938A patent/BE847812A/xx not_active IP Right Cessation
- 1976-10-29 JP JP51130370A patent/JPS5274597A/ja active Granted
- 1976-10-29 GB GB45138/76A patent/GB1524576A/en not_active Expired
- 1976-10-30 ES ES452891A patent/ES452891A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU502999B2 (en) | 1979-08-16 |
| ES452891A1 (es) | 1977-10-16 |
| DK481376A (da) | 1977-05-01 |
| DE2648305A1 (de) | 1977-05-12 |
| AT356062B (de) | 1980-04-10 |
| FR2329594A1 (fr) | 1977-05-27 |
| AU1911876A (en) | 1978-05-04 |
| BE847812A (fr) | 1977-04-29 |
| BR7607234A (pt) | 1977-09-13 |
| DE2648305C3 (de) | 1982-11-25 |
| GB1524576A (en) | 1978-09-13 |
| NL7611785A (nl) | 1977-05-03 |
| CS207373B2 (en) | 1981-07-31 |
| JPS5274597A (en) | 1977-06-22 |
| SE7611815L (sv) | 1977-05-01 |
| CA1090555A (en) | 1980-12-02 |
| DD127640A5 (cs) | 1977-10-05 |
| IT1045191B (it) | 1980-05-10 |
| ATA800476A (de) | 1979-09-15 |
| JPS5722893B2 (cs) | 1982-05-15 |
| DE2648305B2 (de) | 1980-07-03 |
| FR2329594B1 (cs) | 1981-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |