GB579139A - Improvements in ceramic pigments - Google Patents
Improvements in ceramic pigmentsInfo
- Publication number
- GB579139A GB579139A GB758944A GB758944A GB579139A GB 579139 A GB579139 A GB 579139A GB 758944 A GB758944 A GB 758944A GB 758944 A GB758944 A GB 758944A GB 579139 A GB579139 A GB 579139A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fe2o3
- give
- calcined
- ferric salt
- xerogel
- 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
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
- C09C1/0009—Pigments for ceramics
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/84—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by UV- or VIS- data
-
- 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
- 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)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Iron (AREA)
Abstract
579,139. Ceramic pigments. TRIGGS, W. W. (Harshaw Chemical Co.). April 24, 1944, No. 7589. Drawings to Specification. [Classes 1 (ii) and 1 (iii) ] In the production of a ceramic pigment in the form of a discrete, calcined, xerogel of the empirical formula Fe2O3.xSio2, where x is of such value that the Fe2O3 does not exceed 15 per cent. of the combined weights of Fe2O3 and SiO2, a water soluble inorganic ferric salt, an alkali silicate and an inorganic acid are brought together in an aqueous medium to form, on standing, the desired gel, which is then dried at a temperature not exceeding 250‹C., to give a xerogel, washed with water and calcined. preferably in an oxidising atmosphere, for a period of 1 to 3 hours at 800‹-1400‹C. The calcined material is finally ground so that the particle size is between the 200 and 400 mesh sieve. The quantities of ferric salt and alkali silicate are chosen to give the desired composition in the final product, the proportion of acid to give a pH value of desired gel above that produced by hydrolysis of the ferric salt, and the amount of water selected to give, for example, a weight of reaction mixture 15 or 16 times that of the combined Fe2O3 and SiO, content thereof, in the case of the 15 per cent. Fe2O3 pigment. Examples are given.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB758944A GB579139A (en) | 1944-04-24 | 1944-04-24 | Improvements in ceramic pigments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB758944A GB579139A (en) | 1944-04-24 | 1944-04-24 | Improvements in ceramic pigments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB579139A true GB579139A (en) | 1946-07-24 |
Family
ID=9836024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB758944A Expired GB579139A (en) | 1944-04-24 | 1944-04-24 | Improvements in ceramic pigments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB579139A (en) |
-
1944
- 1944-04-24 GB GB758944A patent/GB579139A/en not_active Expired
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