DE2849173C2 - Verfahren zur Herstellung von nadelförmigen α-Eisen-III-oxidteilchen und deren Verwendung - Google Patents
Verfahren zur Herstellung von nadelförmigen α-Eisen-III-oxidteilchen und deren VerwendungInfo
- Publication number
- DE2849173C2 DE2849173C2 DE2849173A DE2849173A DE2849173C2 DE 2849173 C2 DE2849173 C2 DE 2849173C2 DE 2849173 A DE2849173 A DE 2849173A DE 2849173 A DE2849173 A DE 2849173A DE 2849173 C2 DE2849173 C2 DE 2849173C2
- Authority
- DE
- Germany
- Prior art keywords
- acid
- udf54
- udf53
- iii
- iron
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 239000002245 particle Substances 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 26
- 239000000725 suspension Substances 0.000 claims description 43
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 239000002253 acid Substances 0.000 claims description 15
- MSNWSDPPULHLDL-UHFFFAOYSA-K ferric hydroxide Chemical compound [OH-].[OH-].[OH-].[Fe+3] MSNWSDPPULHLDL-UHFFFAOYSA-K 0.000 claims description 13
- 239000003630 growth substance Substances 0.000 claims description 11
- 150000003839 salts Chemical class 0.000 claims description 8
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 239000006247 magnetic powder Substances 0.000 claims description 5
- HWXBTNAVRSUOJR-UHFFFAOYSA-N 2-hydroxyglutaric acid Chemical compound OC(=O)C(O)CCC(O)=O HWXBTNAVRSUOJR-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- PJFQKDBQOXFCAI-UHFFFAOYSA-N 1,2-dihydroxyethane-1,1,2-tricarboxylic acid Chemical compound OC(=O)C(O)C(O)(C(O)=O)C(O)=O PJFQKDBQOXFCAI-UHFFFAOYSA-N 0.000 claims description 3
- HZLCGUXUOFWCCN-UHFFFAOYSA-N 2-hydroxynonadecane-1,2,3-tricarboxylic acid Chemical compound CCCCCCCCCCCCCCCCC(C(O)=O)C(O)(C(O)=O)CC(O)=O HZLCGUXUOFWCCN-UHFFFAOYSA-N 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 3
- 239000007900 aqueous suspension Substances 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 125000006527 (C1-C5) alkyl group Chemical group 0.000 claims description 2
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 claims description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 2
- QAOBWZAHOFFKKR-UHFFFAOYSA-N 2-hydroxy-2-propylpropanedioic acid Chemical compound CCCC(O)(C(O)=O)C(O)=O QAOBWZAHOFFKKR-UHFFFAOYSA-N 0.000 claims description 2
- XKYZDQDNUKQLNY-UHFFFAOYSA-N 3,3-dihydroxypentanedioic acid Chemical compound OC(=O)CC(O)(O)CC(O)=O XKYZDQDNUKQLNY-UHFFFAOYSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- JZQOJFLIJNRDHK-CMDGGOBGSA-N alpha-irone Chemical compound CC1CC=C(C)C(\C=C\C(C)=O)C1(C)C JZQOJFLIJNRDHK-CMDGGOBGSA-N 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 239000001630 malic acid Substances 0.000 claims description 2
- 235000011090 malic acid Nutrition 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 42
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 33
- 239000007864 aqueous solution Substances 0.000 description 30
- 239000002244 precipitate Substances 0.000 description 28
- 239000000243 solution Substances 0.000 description 19
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 15
- 238000003756 stirring Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 239000000047 product Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 9
- 239000013078 crystal Substances 0.000 description 7
- 229910052598 goethite Inorganic materials 0.000 description 7
- AEIXRCIKZIZYPM-UHFFFAOYSA-M hydroxy(oxo)iron Chemical compound [O][Fe]O AEIXRCIKZIZYPM-UHFFFAOYSA-M 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 6
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 5
- 238000002441 X-ray diffraction Methods 0.000 description 5
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- 229960004887 ferric hydroxide Drugs 0.000 description 4
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- YDONNITUKPKTIG-UHFFFAOYSA-N [Nitrilotris(methylene)]trisphosphonic acid Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CP(O)(O)=O YDONNITUKPKTIG-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 3
- -1 hydroxy, amino Chemical group 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000002050 diffraction method Methods 0.000 description 2
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 150000003009 phosphonic acids Chemical class 0.000 description 2
- 229910003145 α-Fe2O3 Inorganic materials 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- KIOMJGNWXFWXOB-OWOJBTEDSA-N [(e)-2-phosphonoethenyl]phosphonic acid Chemical compound OP(O)(=O)\C=C\P(O)(O)=O KIOMJGNWXFWXOB-OWOJBTEDSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 229960004106 citric acid Drugs 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 229910001447 ferric ion Inorganic materials 0.000 description 1
- RAQDACVRFCEPDA-UHFFFAOYSA-L ferrous carbonate Chemical compound [Fe+2].[O-]C([O-])=O RAQDACVRFCEPDA-UHFFFAOYSA-L 0.000 description 1
- 229910001448 ferrous ion Inorganic materials 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- MBKDYNNUVRNNRF-UHFFFAOYSA-N medronic acid Chemical compound OP(O)(=O)CP(O)(O)=O MBKDYNNUVRNNRF-UHFFFAOYSA-N 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- HJZKOAYDRQLPME-UHFFFAOYSA-N oxidronic acid Chemical compound OP(=O)(O)C(O)P(O)(O)=O HJZKOAYDRQLPME-UHFFFAOYSA-N 0.000 description 1
- 229960004230 oxidronic acid Drugs 0.000 description 1
- 150000003008 phosphonic acid esters Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 229960000999 sodium citrate dihydrate Drugs 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910006297 γ-Fe2O3 Inorganic materials 0.000 description 1
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
- G11B5/70642—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
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
-
- 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
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 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
- C01P2004/62—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
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)
- Compounds Of Iron (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13708777A JPS5469594A (en) | 1977-11-14 | 1977-11-14 | Production of ferric oxide and magnetic material |
| JP13927177A JPS5471796A (en) | 1977-11-18 | 1977-11-18 | Production of novel ferric oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2849173A1 DE2849173A1 (de) | 1979-05-17 |
| DE2849173C2 true DE2849173C2 (de) | 1987-01-29 |
Family
ID=26470509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2849173A Expired DE2849173C2 (de) | 1977-11-14 | 1978-11-13 | Verfahren zur Herstellung von nadelförmigen α-Eisen-III-oxidteilchen und deren Verwendung |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4202871A (US20030186963A1-20031002-C00026.png) |
| DE (1) | DE2849173C2 (US20030186963A1-20031002-C00026.png) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029646B2 (ja) * | 1981-01-20 | 1985-07-11 | 堺化学工業株式会社 | 磁性酸化鉄粉末の製造方法 |
| JPS6042174B2 (ja) * | 1980-11-27 | 1985-09-20 | 堺化学工業株式会社 | 針状酸化第二鉄の製造方法 |
| DE3146982A1 (de) * | 1980-11-27 | 1982-07-08 | Sakai Chemical Industry Co. Ltd., Sakai, Osaka | Verfahren zum herstellen von nadelfoermigen magnetischen einkristallteilchen aus alpha-ferrioxid sowie von mit kobalt modifizierten magnetischen teilchen |
| JPS6042804A (ja) * | 1983-08-18 | 1985-03-07 | Hitachi Maxell Ltd | 磁気記録媒体及び磁気記録媒体用磁性粉末 |
| US4464196A (en) * | 1983-08-24 | 1984-08-07 | Hercules Incorporated | Acicular ferromagnetic metal particles |
| DE3608540A1 (de) * | 1986-03-14 | 1987-09-17 | Basf Ag | Verfahren zur herstellung von nadelfoermigem (alpha)-fe(pfeil abwaerts)2(pfeil abwaerts)o(pfeil abwaerts)3(pfeil abwaerts) |
| EP0237944B1 (de) * | 1986-03-14 | 1993-01-07 | BASF Aktiengesellschaft | Verfahren zur Herstellung von nadelförmigem alpha-Eisen-III-Oxid |
| DE3860614D1 (de) * | 1987-02-16 | 1990-10-25 | Toda Kogyo Corp | Plattenfoermige magnetit- und maghemitpartikeln und verfahren zu deren herstellung. |
| DE3807042A1 (de) * | 1988-03-04 | 1989-09-14 | Basf Ag | Verfahren zur herstellung von nadelfoermigem (alpha)-fe(pfeil abwaerts)2(pfeil abwaerts)o(pfeil abwaerts)3(pfeil abwaerts) |
| US5028483A (en) * | 1990-06-01 | 1991-07-02 | Minnesota Mining And Manufacturing Company | Magnetic recording medium comprising acicular dendrite free iron oxide magnetic pigment particles |
| DE4106656A1 (de) * | 1991-03-02 | 1992-09-03 | Basf Ag | Verbundwerkstoffe aus kunststoffen und eisenoxid-fasern |
| WO1995012548A1 (en) * | 1993-11-01 | 1995-05-11 | Minnesota Mining And Manufacturing Company | Process for making goethite |
| US5569445A (en) * | 1993-12-30 | 1996-10-29 | Sakai Chemical Industry Co., Ltd. | Fine acicular α-ferric oxide and production thereof |
| KR100487905B1 (ko) * | 2002-10-02 | 2005-05-06 | 한국과학기술연구원 | 형상이방성 산화철 나노분말 및 그 제조방법 |
| ITMI20040162A1 (it) * | 2004-02-02 | 2004-05-02 | Bozzetto Giovanni Spa | Uso di polliaaminometilenfosfonati quali agenti disperdenti |
| US8822030B2 (en) | 2006-08-11 | 2014-09-02 | Aqua Resources Corporation | Nanoplatelet metal hydroxides and methods of preparing same |
| US7892447B2 (en) * | 2006-08-11 | 2011-02-22 | Aqua Resources Corporation | Nanoplatelet metal hydroxides and methods of preparing same |
| US20090108229A1 (en) * | 2007-10-26 | 2009-04-30 | Headwaters Technology Innovation, Llc | Magnetite powder and methods of making same |
| RU2533487C2 (ru) * | 2013-02-18 | 2014-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный университет" (СПбГУ) | Способ получения наночастиц маггемита и суперпарамагнитная порошковая композиция |
| CN109775763B (zh) * | 2019-02-01 | 2021-04-27 | 枣庄学院 | 一种松果状Fe2O3纳米颗粒及其制备方法、实验方法与应用 |
| CN110255625B (zh) * | 2019-07-02 | 2021-10-22 | 浙江华源颜料股份有限公司 | 一种高活性催化剂氧化铁红的制备方法及其应用 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2217692C3 (de) * | 1972-04-13 | 1984-10-18 | Henkel KGaA, 4000 Düsseldorf | Komplexbildner mit mehrwertigen Metallionen |
| DE2249274A1 (de) * | 1972-10-07 | 1974-04-18 | Bayer Ag | Herstellung von gefaelltem rotem eisen(iii)-oxid |
| JPS5124478A (ja) * | 1974-08-23 | 1976-02-27 | Okuni Yukimasa | Kanketsutekinishosareru yuatsukikyoyuatsugenno jidokido mataha teishisochi |
| DE2461937C3 (de) * | 1974-12-31 | 1978-04-20 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung nadeiförmiger Eisenoxide für die Herstellung von Magnetogrammträgern |
| DE2508932A1 (de) * | 1975-03-01 | 1976-09-09 | Bayer Ag | Transparente rote eisen(iii)-oxidpigmente |
| DE2520643C2 (de) * | 1975-05-09 | 1983-11-17 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von γ-Eisen(III)oxid |
-
1978
- 1978-11-06 US US05/957,861 patent/US4202871A/en not_active Expired - Lifetime
- 1978-11-13 DE DE2849173A patent/DE2849173C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4202871A (en) | 1980-05-13 |
| DE2849173A1 (de) | 1979-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2849173C2 (de) | Verfahren zur Herstellung von nadelförmigen α-Eisen-III-oxidteilchen und deren Verwendung | |
| DE69526313T2 (de) | Magnetische, spindelförmige Legierungsteilchen mit Kobalt und Eisen als Hauptbestandteilen sowie Verfahren zu deren Herstellung | |
| DE2130921C3 (de) | Verfahren zur Herstellung von Pulver aus metallischem Eisen mit Kobalt und/oder Nickel für magnetische Aufzeichnungsbänder | |
| DE3700943C2 (de) | Verfahren zur Herstellung von Lepidokrokit | |
| EP0015485A1 (de) | Ferromagnetisches, im wesentlichen aus Eisen bestehendes Metallpulver und Verfahren zu dessen Herstellung | |
| DE68923544T2 (de) | Magnetische Eisenoxydteilchen und Verfahren zu ihrer Herstellung. | |
| DE3017525A1 (de) | Verfahren zur herstellung von magnetpulver mit hoher koerzitivkraft | |
| DE2738421C2 (de) | Verfahren zur Herstellung eines magnetischen metallischen Pulvers | |
| EP0237944B1 (de) | Verfahren zur Herstellung von nadelförmigem alpha-Eisen-III-Oxid | |
| DE68911757T2 (de) | Blättchenförmige Ferritteilchen für magnetische Aufzeichnung und Verfahren zu ihrer Herstellung. | |
| DE2235383C3 (de) | Verfahren zur Herstellung ferromagnetischer nadelförmiger Teilchen für ein Aufzeichnungssystem | |
| DE3427632C2 (de) | Naßverfahren zur Herstellung von feinen Ferritteilchen mit Magnetoplumbitstruktur | |
| DE2639250C2 (de) | Verfahren zur Herstellung von nadelförmigem, kobaltdotiertem magnetischem Eisenoxid | |
| DE2151471A1 (de) | Stabilisierte,ferromagnetische Chromdioxydteilchen und Verfahren zu deren Herstellung | |
| DE1204644B (de) | Verfahren zur Herstellung von insbesondere als Ausgangsmaterial fuer die Herstellung von hochkoerzitivem ª†-Eisen(III)-oxyd geeignetem nadelfoermigem Eisenoxydgelb, alpha-OH | |
| DE69800243T2 (de) | Verfahren zur Herstellung von Eisenoxid Hydrat und ferromagnetisches Eisenoxid | |
| DE69426813T2 (de) | Feinteiliges nadelförmiges alpha-Eisen-III-oxid und Herstellungsverfahren | |
| DE2225796A1 (de) | Verfahren zur Herstellung von magnetischem Material in Pulverform | |
| DE3243868C2 (de) | Verfahren zur Herstellung von nadelförmigem â-FeOOH für magnetische Aufzeichnungsmaterialien | |
| EP0300310A2 (de) | Verfahren zur Herstellung feinteiliger magnetischer Hexaferritpigmente | |
| DE69123732T2 (de) | Verfahren zur Herstellung von nadelförmigen Goethit-Teilchen und nadelförmigen magnetischen Eisenoxid-Teilchen | |
| DE3520762C2 (US20030186963A1-20031002-C00026.png) | ||
| DE69123837T2 (de) | Verfahren zur Herstellung von nadelförmigen Goethit-Teilchen und nadelförmigen magnetischen Eisenoxid-Teilchen | |
| DE2419800A1 (de) | Kobalt-modifizierte eisenoxide | |
| DE68907696T2 (de) | Verfahren zur Herstellung von magnetischen Teilchen aus Hexaferrit, gewonnene Teilchen und diese enthaltende Produkte. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8366 | Restricted maintained after opposition proceedings | ||
| 8305 | Restricted maintenance of patent after opposition | ||
| D4 | Patent maintained restricted | ||
| 8339 | Ceased/non-payment of the annual fee |