FIELD: chemistry.
SUBSTANCE: invention relates to a method of coating surfaces of solid inorganic particles in aqueous suspensions, particularly coating titanium dioxide with a silicon dioxide (SiO2) film. The method includes the following steps: a) deagglomeration of the aqueous suspension of solid particles, b) adding water-soluble film-forming precursors to the suspension, c) homogenising the suspension directly at step b) in a disperser, wherein at steps a) to c) the temperature value and pH vary slightly, d) settling the suspension in a container and depositing coating substances on the surface of particles, further coating of the surface of the particles, e) separating solid particles from the suspension.
EFFECT: method enables to obtain particles with virtually identical and uniform coating on the surface, wherein the number of particles with any deviation is minimal.
| Title | Year | Author | Number |
|---|---|---|---|
| TITANIUM DIOXIDE-BASED PIGMENT AND PRODUCTION METHOD THEREOF | 2005 |
|
RU2458094C2 |
| METHOD FOR TITANIUM DIOXIDE TREATMENT AND PIGMENT THEREOF | 2005 |
|
RU2367673C2 |
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|
RU2333923C1 |
| TITANIUM DIOXIDE BASED PIGMENT (VERSIONS), METHOD FOR PRODUCTION THEREOF, METHODS OF MAKING DECORATIVE PAPER AND COATING MATERIALS, DECORATIVE PAPER, DECORATIVE COATING MATERIAL AND LIMINATE | 2007 |
|
RU2480498C2 |
| METHOD OF COATING SURFACE OF INORGANIC PARTICLES WITH SILICON DIOXIDE AND AT LEAST ONE ADDITIONAL INORGANIC COMPOUND (EMBODIMENTS) | 2015 |
|
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| METHOD OF PRODUCING TITANIUM DIOXIDE BASED PIGMENT, TITANIUM DIOXIDE BASED PIGMENT, METHOD OF MAKING DECORATIVE PAPER | 2012 |
|
RU2586563C2 |
| TITANIUM DIOXIDE | 2009 |
|
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| TITANIUM DIOXIDE PARTICLES | 1997 |
|
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|
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| METHOD OF MODIFYING PIGMENT TITANIUM DIOXIDE | 1993 |
|
RU2042693C1 |
