GB805494A - Improvements in or relating to alumina-silica pigments and their preparation - Google Patents
Improvements in or relating to alumina-silica pigments and their preparationInfo
- Publication number
- GB805494A GB805494A GB1046455A GB1046455A GB805494A GB 805494 A GB805494 A GB 805494A GB 1046455 A GB1046455 A GB 1046455A GB 1046455 A GB1046455 A GB 1046455A GB 805494 A GB805494 A GB 805494A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkaline earth
- earth metal
- pigment
- silica
- salt
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- 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
- C09C1/40—Compounds of aluminium
- C09C1/405—Compounds of aluminium containing combined silica, e.g. mica
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/02—Amorphous compounds
-
- 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
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
-
- 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
- C01P2006/12—Surface area
-
- 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
-
- 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
- C01P2006/82—Compositional purity water content
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
A finely-divided, amorphous alumina-silica pigment containing at least six mols. of SiO2 per mol. of Al2O3, the ratio of SiO2 to metal oxide being in excess of 2 and the ratio of mols. of Al2O3 per mol. of other metal oxides if present, being not less than 0.2, said pigment having an ultimate particle size below 0.1 microns, may be prepared by reacting in aqueous medium an alkaline earth metal silicate having an average ultimate particle size below 0.1 micron with an amount of an aluminium salt sufficient to react with at least 20 per cent of the alkaline earth metal silicate. In one modification of the method the alkaline earth metal silicate is reacted with an aluminium salt and an acid so that a portion of the alkaline earth metal is extracted from the reaction mixture before reaction with the aluminium salt. A second modification of the method produces a finely divided aluminasilica pigment by simultaneously reacting together, in aqueous solution, a water soluble, alkaline earth metal salt, an alkali metal silicate and an aluminium salt. Alternatively, the pigment may be produced by reacting an aluminium salt with silica, said silica having been precipitated from aqueous sodium silicate solution in pigmentry form and having an average ultimate particle size below 0.1 microns. The alkaline earth metal salt formed in the reaction may be insoluble and may be left in the precipitate or can be washed out. Aluminium salts used include chloride, bromide, nitrate, sulphate or aluminate while the preferred metal salt is calcium chloride. The pigments may be treated with a coating agent before use. Specification 745,822 is referred to.ALSO:A finely-divided, amophous alumina-silica pegment containing at least six mols. of SiO2 per mol. of Al2O3, the ratio of SiO2 to metal oxide being in excess of 2 and the ratio of mols. of Al2O3 per mol. of other metal oxides if present being not less than 0.2, said pigment having an ultimate particle size below 0.1 microns, may be prepared by reacting in aqueous medium an alkaline earth metal silicate having an average ultimate particle size below 0.1 micron with an amount of an aluminium salt sufficient to react with at least 20 per cent of the alkaline earth metal silicate. In one modification of the method the alkaline earth metal silicate is reacted with an aluminium salt and an acid so that a portion of the alkaline earth metal is extracted from thereaction mixture before reaction with the aluminium salt. A second modification of the method produces a finely-divided aluminasilica pigment by simultaneously reacting together, in aqueous solution, a water soluble, alkaline earth metal salt, an alkali metal silicate and an aluminium salt. Alternatively, the pigment may be produced by reacting an aluminium salt with silica, said silica having been precipitated from aqueous sodium silicate solution in pigmentry form and having an average ultimate particle size below 0.1 microns. The alkaline earth metal salt formed in the reaction may be insoluble and may be left in the precipitate or can be washed out. Aluminium salts used include chloride, bromide, nitrate, sulphate or aluminate while the preferred metal salt is calcium chloride. The pigments may be treated with a coating agent before use. The finely-divided alumina-silica pigment which can be used as fillers for natural and synthetic rubbers such as butadienestyrene copolymers known as GR-S rubber, butadiene-acrylonitrile polymers, chloroprene rubber, butyl rubber, and like polymers of butadiene - 1,3, isoprene, 2 - chlorobutadiene-1,3, and 2,3-dimethyl butadiene-1,3 as well as polyvinyl chloride, vinyl chloride-vinyl acetate copolymers, and mixtures of natural and synthetic rubbers, the amount of such pigment incorporated in these rubbers being about 10 to 100 parts by weight per 100 part by weight of elastomer or rubber compositions. Specification 745,822, [Group III], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1046455A GB805494A (en) | 1955-04-12 | 1955-04-12 | Improvements in or relating to alumina-silica pigments and their preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1046455A GB805494A (en) | 1955-04-12 | 1955-04-12 | Improvements in or relating to alumina-silica pigments and their preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB805494A true GB805494A (en) | 1958-12-10 |
Family
ID=9968345
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1046455A Expired GB805494A (en) | 1955-04-12 | 1955-04-12 | Improvements in or relating to alumina-silica pigments and their preparation |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB805494A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2943948A (en) * | 1959-06-24 | 1960-07-05 | Columbia Southern Chem Corp | Silica composition and production thereof |
-
1955
- 1955-04-12 GB GB1046455A patent/GB805494A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2943948A (en) * | 1959-06-24 | 1960-07-05 | Columbia Southern Chem Corp | Silica composition and production thereof |
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