GB379756A - Improvements in or relating to the production of iron oxide pigments - Google Patents
Improvements in or relating to the production of iron oxide pigmentsInfo
- Publication number
- GB379756A GB379756A GB1651131A GB1651131A GB379756A GB 379756 A GB379756 A GB 379756A GB 1651131 A GB1651131 A GB 1651131A GB 1651131 A GB1651131 A GB 1651131A GB 379756 A GB379756 A GB 379756A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- production
- iron oxide
- acid
- oxide pigments
- 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
- 239000001034 iron oxide pigment Substances 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 abstract 1
- -1 aromatic nitro-compounds Chemical class 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000006396 nitration reaction Methods 0.000 abstract 1
- 229910017604 nitric acid Inorganic materials 0.000 abstract 1
- 239000000049 pigment Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
Classifications
-
- 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]
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Iron (AREA)
Abstract
Pigments consisting of ferrie oxide are obtained by reacting the sludge formed in the reduction of aromatic nitro-compounds to amines by means of iron with 30-50 per cent of the amount of sulphuric acid chemically equivalent to the iron present, and setting and calcining the resulting mixture. Spent acid from the nitration of benzol &c. may be used without separation of the nitric acid also present, and may provide sufficient acid for the first step of the process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1651131A GB379756A (en) | 1931-06-05 | 1931-06-05 | Improvements in or relating to the production of iron oxide pigments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1651131A GB379756A (en) | 1931-06-05 | 1931-06-05 | Improvements in or relating to the production of iron oxide pigments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB379756A true GB379756A (en) | 1932-09-05 |
Family
ID=10078638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1651131A Expired GB379756A (en) | 1931-06-05 | 1931-06-05 | Improvements in or relating to the production of iron oxide pigments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB379756A (en) |
-
1931
- 1931-06-05 GB GB1651131A patent/GB379756A/en not_active Expired
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