GB1587758A - Process for the joint production of aromatic amines and iron oxide pigments - Google Patents
Process for the joint production of aromatic amines and iron oxide pigments Download PDFInfo
- Publication number
- GB1587758A GB1587758A GB46419/77A GB4641977A GB1587758A GB 1587758 A GB1587758 A GB 1587758A GB 46419/77 A GB46419/77 A GB 46419/77A GB 4641977 A GB4641977 A GB 4641977A GB 1587758 A GB1587758 A GB 1587758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- case
- process according
- ferrous salt
- iron oxide
- nitrogen compound
- 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
- 238000000034 method Methods 0.000 title claims description 41
- 239000001034 iron oxide pigment Substances 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 150000004982 aromatic amines Chemical class 0.000 title claims description 8
- 239000000203 mixture Substances 0.000 claims description 32
- 229910017464 nitrogen compound Inorganic materials 0.000 claims description 28
- -1 aromatic nitrogen compound Chemical class 0.000 claims description 27
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 27
- 150000007514 bases Chemical class 0.000 claims description 23
- 239000007864 aqueous solution Substances 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 16
- 239000011790 ferrous sulphate Substances 0.000 claims description 14
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 14
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 9
- 239000007795 chemical reaction product Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052736 halogen Inorganic materials 0.000 claims description 8
- 150000002367 halogens Chemical class 0.000 claims description 8
- 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 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 150000002828 nitro derivatives Chemical class 0.000 claims description 7
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 5
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 238000004040 coloring Methods 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 150000002830 nitrogen compounds Chemical class 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000908 ammonium hydroxide Substances 0.000 claims description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
- 150000004679 hydroxides Chemical class 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000000896 monocarboxylic acid group Chemical group 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 229940067573 brown iron oxide Drugs 0.000 claims 2
- 125000003118 aryl group Chemical group 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 27
- 235000013980 iron oxide Nutrition 0.000 description 19
- 238000013019 agitation Methods 0.000 description 15
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 12
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 11
- 239000002244 precipitate Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004821 distillation Methods 0.000 description 8
- 239000003086 colorant Substances 0.000 description 7
- 239000000049 pigment Substances 0.000 description 7
- 238000010992 reflux Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- ALYNCZNDIQEVRV-UHFFFAOYSA-N 4-aminobenzoic acid Chemical compound NC1=CC=C(C(O)=O)C=C1 ALYNCZNDIQEVRV-UHFFFAOYSA-N 0.000 description 4
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 239000001058 brown pigment Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 4
- 230000008025 crystallization Effects 0.000 description 4
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 3
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 description 3
- PLAZTCDQAHEYBI-UHFFFAOYSA-N 2-nitrotoluene Chemical compound CC1=CC=CC=C1[N+]([O-])=O PLAZTCDQAHEYBI-UHFFFAOYSA-N 0.000 description 3
- ZPTVNYMJQHSSEA-UHFFFAOYSA-N 4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1 ZPTVNYMJQHSSEA-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000001256 steam distillation Methods 0.000 description 3
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 2
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 2
- CZZZABOKJQXEBO-UHFFFAOYSA-N 2,4-dimethylaniline Chemical compound CC1=CC=C(N)C(C)=C1 CZZZABOKJQXEBO-UHFFFAOYSA-N 0.000 description 2
- ZAJAQTYSTDTMCU-UHFFFAOYSA-N 3-aminobenzenesulfonic acid Chemical compound NC1=CC=CC(S(O)(=O)=O)=C1 ZAJAQTYSTDTMCU-UHFFFAOYSA-N 0.000 description 2
- CZGCEKJOLUNIFY-UHFFFAOYSA-N 4-Chloronitrobenzene Chemical compound [O-][N+](=O)C1=CC=C(Cl)C=C1 CZGCEKJOLUNIFY-UHFFFAOYSA-N 0.000 description 2
- TYMLOMAKGOJONV-UHFFFAOYSA-N 4-nitroaniline Chemical compound NC1=CC=C([N+]([O-])=O)C=C1 TYMLOMAKGOJONV-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229960004050 aminobenzoic acid Drugs 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229940018564 m-phenylenediamine Drugs 0.000 description 2
- 150000002897 organic nitrogen compounds Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- WDCYWAQPCXBPJA-UHFFFAOYSA-N 1,3-dinitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC([N+]([O-])=O)=C1 WDCYWAQPCXBPJA-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
- 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
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- ONMOULMPIIOVTQ-UHFFFAOYSA-N 98-47-5 Chemical compound OS(=O)(=O)C1=CC=CC([N+]([O-])=O)=C1 ONMOULMPIIOVTQ-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- PDLRAWUYNOBPIS-UHFFFAOYSA-N aniline;nitrobenzene Chemical compound NC1=CC=CC=C1.[O-][N+](=O)C1=CC=CC=C1 PDLRAWUYNOBPIS-UHFFFAOYSA-N 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002506 iron compounds Chemical class 0.000 description 1
- 229910021506 iron(II) hydroxide 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
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- VMPITZXILSNTON-UHFFFAOYSA-N o-anisidine Chemical compound COC1=CC=CC=C1N VMPITZXILSNTON-UHFFFAOYSA-N 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000000725 suspension Substances 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
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/30—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds
- C07C209/32—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups
- C07C209/36—Preparation of compounds containing amino groups bound to a carbon skeleton by reduction of nitrogen-to-oxygen or nitrogen-to-nitrogen bonds by reduction of nitro groups by reduction of nitro groups bound to carbon atoms of six-membered aromatic rings in presence of hydrogen-containing gases and a catalyst
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/50—Agglomerated particles
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Compounds Of Iron (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT29541/76A IT1107703B (it) | 1976-11-19 | 1976-11-19 | Procedimento per la preparazione contemporanea di ammine aromatiche e di pigmenti a base di ossidi di ferro |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1587758A true GB1587758A (en) | 1981-04-08 |
Family
ID=11227596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB46419/77A Expired GB1587758A (en) | 1976-11-19 | 1977-11-08 | Process for the joint production of aromatic amines and iron oxide pigments |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4145228A (enExample) |
| JP (1) | JPS5365833A (enExample) |
| GB (1) | GB1587758A (enExample) |
| IT (1) | IT1107703B (enExample) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2826941C2 (de) * | 1978-06-20 | 1985-11-21 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Eisenoxidrotpigmenten |
| 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 |
| DE3620333A1 (de) * | 1986-06-18 | 1987-12-23 | Bayer Ag | Farbstarke im nitrobenzolreduktionsverfahren erhaltene eisenoxidschwarzpigmente sowie verfahren zu deren herstellung |
| US4992143A (en) * | 1989-06-09 | 1991-02-12 | Mobay Corporation | Continuous process for the separation of a partially water soluble component from a slurry |
| DE4322886C2 (de) * | 1993-07-09 | 1995-04-20 | Bayer Ag | Thermostabile Eisenoxidpigmente, Verfahren zu ihrer Herstellung sowie deren Verwendung |
| DE19652953C2 (de) * | 1996-12-19 | 2000-05-18 | Bayer Ag | Verfahren zur Herstellung von Eisenoxidkeimen und deren Verwendung |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1793941A (en) * | 1925-05-08 | 1931-02-24 | Ig Farbenindustrie Ag | Iron-oxide pigment and process of producing the same as by-products of the reduction of aromatic nitro compounds |
| US1849428A (en) * | 1925-05-08 | 1932-03-15 | Ig Farbenindustrie Ag | Iron oxide pigments and process of producing the same as by-products of the reduction of aromatic nitrocompounds |
| US2866686A (en) * | 1952-09-16 | 1958-12-30 | C K Williams & Co | Preparation of red oxide of iron |
| US3619137A (en) * | 1969-01-16 | 1971-11-09 | Pfizer | Production of iron oxide pigments |
-
1976
- 1976-11-19 IT IT29541/76A patent/IT1107703B/it active
-
1977
- 1977-11-08 GB GB46419/77A patent/GB1587758A/en not_active Expired
- 1977-11-17 US US05/852,264 patent/US4145228A/en not_active Expired - Lifetime
- 1977-11-18 JP JP13883977A patent/JPS5365833A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT1107703B (it) | 1985-11-25 |
| JPS5365833A (en) | 1978-06-12 |
| US4145228A (en) | 1979-03-20 |
| JPS5647172B2 (enExample) | 1981-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4898978A (en) | Process for the preparation of N,N'-disubstituted guanidines | |
| GB1587758A (en) | Process for the joint production of aromatic amines and iron oxide pigments | |
| GB1587759A (en) | Process for preparing a red iron oxide pigment | |
| US3927026A (en) | Process of making X-form metal phthalocyanine | |
| US4055629A (en) | Process for the removal of selenium compounds from urethane solutions | |
| CA1255332A (en) | Process for the preparation of 4,4'-dinitrodibenzyls | |
| DE112010002915T5 (de) | Recyclebarer heterogener Zweikomponenten-Katalysator, Verfahren zum Herstellen desselben und dessen Verwendung für die Herstellung von Aminen | |
| US1793942A (en) | Iron oxide pigment and process of producing the same as by-products of the reductionof aromatic nitro compounds | |
| GB1576334A (en) | N-alkyl and n,n-dialkyl derivatives thereof process for the manufacture of p-hydroxyphenylglycine and | |
| DE2617917C3 (de) | Verfahren zur Herstellung von Thiocarbamidsäureestern | |
| EP0057889A1 (de) | Verfahren zur Herstellung von 1-Alkyl-2-chlor-5-nitro-4-benzol-sulfonsäuren | |
| US2946822A (en) | Purification of m-phenylenediamine | |
| KR940003062B1 (ko) | 4,4'-다아미노디페닐 화합물의 제조방법 | |
| US2793214A (en) | Chlorinated copper phthalocyanine | |
| US1882335A (en) | Method of separating halo-benzoic acids | |
| US4510087A (en) | Process for producing 1,4-diaminoanthraquinone-2-sulfonic acid | |
| US4328161A (en) | Process for the preparation of 1-aminoanthraquinones | |
| DE2424372C3 (de) | Verfahren zur Herstellung von Isonitrosoacetaniliden | |
| US4000157A (en) | Process for the treatment of effluent from the synthesis of copper phthalocyanine | |
| US2647128A (en) | Process for preparing metal phthalocyanines | |
| US4328160A (en) | Process for the preparation of 1-aminoanthraquinones | |
| JPS6342944B2 (enExample) | ||
| DE2230070A1 (de) | Verfahren zur Herstellung von N-(2,4-Dihalogen-s-triazin-6-yl)-harnstoffen | |
| DD236520A5 (de) | Verfahren zur herstellung von chlor-o-nitroanilinen | |
| JP2812027B2 (ja) | 銅フタロシアニン顔料の製造法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |