CA1085588A - Process for preparing a red iron oxide pigment - Google Patents
Process for preparing a red iron oxide pigmentInfo
- Publication number
- CA1085588A CA1085588A CA291,876A CA291876A CA1085588A CA 1085588 A CA1085588 A CA 1085588A CA 291876 A CA291876 A CA 291876A CA 1085588 A CA1085588 A CA 1085588A
- Authority
- CA
- Canada
- Prior art keywords
- stage
- nuclei
- ferrous sulphate
- fe2o3
- alkali metal
- 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
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000001034 iron oxide pigment Substances 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000000049 pigment Substances 0.000 claims abstract description 26
- 239000000725 suspension Substances 0.000 claims abstract description 23
- -1 aromatic nitro compounds Chemical class 0.000 claims abstract description 21
- 150000002828 nitro derivatives Chemical class 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 239000011541 reaction mixture Substances 0.000 claims abstract description 12
- 150000004982 aromatic amines Chemical class 0.000 claims abstract description 6
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 33
- 239000011790 ferrous sulphate Substances 0.000 claims description 33
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 23
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000002244 precipitate Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 13
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000009835 boiling Methods 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 10
- 239000012798 spherical particle Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 claims description 2
- 239000012429 reaction media Substances 0.000 claims description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract description 6
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 4
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 4
- 230000015572 biosynthetic process Effects 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 12
- 235000011121 sodium hydroxide Nutrition 0.000 description 10
- 229940083608 sodium hydroxide Drugs 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 235000013980 iron oxide Nutrition 0.000 description 8
- 238000013019 agitation Methods 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000013065 commercial product Substances 0.000 description 3
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000001054 red pigment Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 description 1
- BBUPBICWUURTNP-UHFFFAOYSA-N 2,4-dimethyl-1-nitrobenzene Chemical compound CC1=CC=C([N+]([O-])=O)C(C)=C1 BBUPBICWUURTNP-UHFFFAOYSA-N 0.000 description 1
- RMBFBMJGBANMMK-UHFFFAOYSA-N 2,4-dinitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1[N+]([O-])=O RMBFBMJGBANMMK-UHFFFAOYSA-N 0.000 description 1
- CFBYEGUGFPZCNF-UHFFFAOYSA-N 2-nitroanisole Chemical compound COC1=CC=CC=C1[N+]([O-])=O CFBYEGUGFPZCNF-UHFFFAOYSA-N 0.000 description 1
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 description 1
- CZGCEKJOLUNIFY-UHFFFAOYSA-N 4-Chloronitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(Cl)C=C1 CZGCEKJOLUNIFY-UHFFFAOYSA-N 0.000 description 1
- TYMLOMAKGOJONV-UHFFFAOYSA-N 4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1 TYMLOMAKGOJONV-UHFFFAOYSA-N 0.000 description 1
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RSPISYXLHRIGJD-UHFFFAOYSA-N OOOO Chemical compound OOOO RSPISYXLHRIGJD-UHFFFAOYSA-N 0.000 description 1
- KUGRPPRAQNPSQD-UHFFFAOYSA-N OOOOO Chemical compound OOOOO KUGRPPRAQNPSQD-UHFFFAOYSA-N 0.000 description 1
- 229910006074 SO2NH2 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004688 heptahydrates Chemical group 0.000 description 1
- 239000008241 heterogeneous mixture Substances 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 229940099990 ogen Drugs 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000565 sulfonamide group Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910000352 vanadyl sulfate Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/22—Compounds of iron
- C09C1/24—Oxides of iron
-
- 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
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
- C01P2004/52—Particles with a specific particle size distribution highly monodisperse size distribution
-
- 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
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT19154A/77 | 1977-01-11 | ||
IT19154/77A IT1074667B (it) | 1977-01-11 | 1977-01-11 | Procedimento per la preparazione di ossido di ferro pigmentario rosso |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1085588A true CA1085588A (en) | 1980-09-16 |
Family
ID=11155330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA291,876A Expired CA1085588A (en) | 1977-01-11 | 1977-11-28 | Process for preparing a red iron oxide pigment |
Country Status (10)
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7906213A (nl) * | 1978-10-04 | 1980-04-09 | Thann & Mulhouse | Rood ijzeroxydepigment en werkwijze voor de bereiding van ijzeroxyde van pigmentkwaliteit uitgaande van afval ijzer (ii) sulfaat. |
DE3028679A1 (de) * | 1980-07-29 | 1982-02-25 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung magnetischer eisenoxide |
FR2562081B1 (fr) * | 1984-03-27 | 1986-10-10 | Thann Mulhouse Sa | Procede de preparation d'oxydes de fer pigmentaires rouges a partir de sulfate ferreux residuaire |
DE3440911C2 (de) * | 1984-11-09 | 1997-08-21 | Bayer Ag | Verfahren zur Herstellung plättchenförmiger Eisenoxidpigmente |
DE3500470A1 (de) * | 1985-01-09 | 1986-07-10 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung heller farbreiner eisenoxidrotpigmente |
DE3716300A1 (de) * | 1987-05-15 | 1988-11-24 | Bayer Ag | Neue farbreine eisenoxidpigmente, verfahren zu ihrer herstellung und deren verwendung |
AU678811B2 (en) * | 1993-02-11 | 1997-06-12 | Corveagh Limited | Colouring pigment and method of manufacture |
CN101376634B (zh) * | 2008-09-22 | 2011-05-11 | 淮安嘉诚高新化工股份有限公司 | 铁粉还原生产邻氯苯胺的方法 |
JP6508487B2 (ja) * | 2014-05-23 | 2019-05-08 | 戸田工業株式会社 | ヘマタイト粒子粉末の製造方法、該ヘマタイト粒子粉末を用いた塗料の製造方法及び樹脂組成物の製造方法 |
CN111233045B (zh) * | 2019-12-25 | 2021-09-07 | 河北彩客化学股份有限公司 | 一种制备氧化铁红颜料且同步生产芳香胺的方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1793942A (en) * | 1925-05-08 | 1931-02-24 | Ig Farbenindustrie Ag | Iron oxide pigment and process of producing the same as by-products of the reductionof aromatic nitro compounds |
US2273101A (en) * | 1938-04-16 | 1942-02-17 | Gen Aniline & Film Corp | Iron oxide pigments and process of producing the same |
US2696426A (en) * | 1951-05-04 | 1954-12-07 | American Cyanamid Co | Process for the preparation of iron oxide pigments |
FR1519503A (fr) * | 1963-06-26 | 1968-04-05 | Bayer Ag | Procédé de préparation de variété d'oxyde de fer hydraté |
DE1592398A1 (de) * | 1967-02-08 | 1970-12-17 | Bayer Ag | Verwendung von hochkoerzitivem nadelfoermigem gamma-Fe2O3 zur Herstellung von Magnetogrammtraegern |
DE2029300C3 (de) * | 1970-06-13 | 1979-04-12 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Eisenoxid- und Eisenoxidhydratpigmenten |
-
1977
- 1977-01-11 IT IT19154/77A patent/IT1074667B/it active
- 1977-11-28 NL NL7713099A patent/NL7713099A/xx not_active Application Discontinuation
- 1977-11-28 CA CA291,876A patent/CA1085588A/en not_active Expired
- 1977-11-28 DE DE19772753009 patent/DE2753009A1/de not_active Withdrawn
- 1977-11-29 JP JP14377077A patent/JPS5387999A/ja active Granted
- 1977-11-29 US US05/856,769 patent/US4139398A/en not_active Expired - Lifetime
- 1977-11-30 FR FR7736066A patent/FR2376889A1/fr active Granted
- 1977-11-30 GB GB49829/77A patent/GB1587759A/en not_active Expired
- 1977-12-01 ES ES464647A patent/ES464647A1/es not_active Expired
- 1977-12-01 CH CH1469077A patent/CH629243A5/it not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CH629243A5 (it) | 1982-04-15 |
GB1587759A (en) | 1981-04-08 |
JPS5387999A (en) | 1978-08-02 |
JPS5744608B2 (US06373033-20020416-M00071.png) | 1982-09-22 |
FR2376889A1 (fr) | 1978-08-04 |
NL7713099A (nl) | 1978-07-13 |
DE2753009A1 (de) | 1978-07-20 |
IT1074667B (it) | 1985-04-20 |
FR2376889B1 (US06373033-20020416-M00071.png) | 1980-08-22 |
ES464647A1 (es) | 1978-09-01 |
US4139398A (en) | 1979-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1085588A (en) | Process for preparing a red iron oxide pigment | |
EP0074442A1 (en) | Yellow pigments stable at high temperatures | |
US4289746A (en) | Process for preparation of micaceous iron oxide | |
US4090888A (en) | Production of black iron oxide pigments | |
JPH0416409B2 (US06373033-20020416-M00071.png) | ||
JPH04214037A (ja) | 黒色マンガン/鉄酸化物顔料 | |
JPH0627006B2 (ja) | 酸化鉄赤色顔料の製造方法 | |
KR20140085439A (ko) | 미분된 헤마타이트 및 산화철 적색 안료를 제조하기 위한 개선된 방법 | |
JPH0623055B2 (ja) | 新規な色の純粋な酸化鉄顔料類、それらの製造方法およびそれらの使用 | |
EP1210295B1 (en) | Process for making high density and large particle size cobalt hydroxide or cobalt mixed hydroxides and a product made by this process | |
CA1096585A (en) | Oxidation of metallic iron to black oxide pigments | |
AU616274B2 (en) | New iron oxide pigments, a process for their preparation and their use | |
JPH06183746A (ja) | 光沢顔料およびその製造法 | |
EP1230163B1 (en) | Method for production of iron oxide pigments | |
US4153472A (en) | Process for preparing a red pigmentary iron oxide | |
US4115106A (en) | Method for producing metallic oxide compounds | |
US5487779A (en) | Corrosion inhibiting pigment composition and method | |
DE3028679A1 (de) | Verfahren zur herstellung magnetischer eisenoxide | |
AU615030B2 (en) | New oxidation resistant, heat resistant iron oxide black pigments, a process for their preparation and their use | |
US3919404A (en) | Hydrothermal process for preparation of alpha iron oxide crystals | |
JP2829644B2 (ja) | α−酸化鉄の製造法 | |
Konishi et al. | Preparation and characterization of fine magnetite particles from iron (III) carboxylate dissolved in organic solvent | |
EP0416648A2 (en) | Method of micaceous iron oxide (mio) pigment production | |
US4142915A (en) | Process for the preparation of yellow iron hydroxide pigment | |
JPH02133324A (ja) | Srフェライト粒子粉末の製造法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |