GB465912A - Improved process of producing pigmental colouring matter - Google Patents
Improved process of producing pigmental colouring matterInfo
- Publication number
- GB465912A GB465912A GB4364/36A GB436436A GB465912A GB 465912 A GB465912 A GB 465912A GB 4364/36 A GB4364/36 A GB 4364/36A GB 436436 A GB436436 A GB 436436A GB 465912 A GB465912 A GB 465912A
- Authority
- GB
- United Kingdom
- Prior art keywords
- barium
- mixed
- sulphate
- nitrate
- ions
- 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
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/06—Treatment with inorganic compounds
-
- 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
- C09C1/02—Compounds of alkaline earth metals or magnesium
-
- 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)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Coloured pigments, containing barium sulphate as the basic material, are prepared by precipitating barium ions by sulphate ions in the presence of colouring compounds of manganese or other heavy metal, at normal or slightly increased temperature, mixing the precipitate with a nitrate, and melting, sintering and calcining the mixture. A permanganate, manganate or manganite may be employed as the colouring compound, and it may be partly or entirely replaced by corresponding compounds of chromium, vanadium tungsten or molybdenum, by mixtures of such compounds, or by complex salts, such as the heteropolyphosphates or the heteropolysilicates, of these metals. Further variety of shades and colours can be obtained by the addition of such substances as the sulphates and nitrates of cerium, zinc, chromium and iron. According to examples: (1) mixed solutions of a manganate and of sodium sulphate are precipitated by barium ions, and the mixed precipitate of barium sulphate and barium manganate is washed and dried. It is then mixed with barium nitrate and heated, in stages, to 750 DEG C. The resultant mass is powdered and treated with dilute acid, yielding a rich blue pigment; (2) mixed sulphate and chromate ions are precipitated by barium ions, and the precipitate is mixed with barium nitrate and compressed into tablets which are heated, in stages, to 750 DEG C. The product is powdered, twice boiled with dilute hydrochloric acid, then treated with dilute sulphuric acid, washed and dried, yielding a stable green pigment. According to the Specification as open to inspection under Sect. 91 the manganese compound may be replaced by an iron compound, and the nitrate may be replaced by a nitrite. Further, the barium sulphate need not be precipitated in the presence of the colouring compound, but may be merely mixed therewith, prior to mixing with the nitrate. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specification 444,110.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE465912X | 1935-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB465912A true GB465912A (en) | 1937-05-19 |
Family
ID=6540468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4364/36A Expired GB465912A (en) | 1935-02-19 | 1936-02-13 | Improved process of producing pigmental colouring matter |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB465912A (en) |
-
1936
- 1936-02-13 GB GB4364/36A patent/GB465912A/en not_active Expired
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