FIELD: chemistry.
SUBSTANCE: invention relates to chemical industry and can be used for making pigments for varnishes and paints. White-color pigment contains shell and core. Shell is made of titanium dioxide. Core is made of mixture of kaolin and aluminium oxide with total weight content of aluminium silicates and aluminium oxide of not less than 97 %. Weight ratio of aluminium silicates to aluminium oxide ranges from 2 to 4. Weight ratio of shell material to core material varies from 0.66 to 3 at core material ratio from 2 to 5 mcm and shell material from 0.2 to 0.5 mcm.
EFFECT: invention allows to improve quality of pigment due to creation on surface of core dense shell of titanium dioxide, resistant to destruction in operating conditions at acidic precipitation, storage and transportation.
1 cl, 11 ex
| Title | Year | Author | Number |
|---|---|---|---|
| WHITE PIGMENT | 2015 |
|
RU2607406C1 |
| WHITE PIGMENT | 2015 |
|
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|
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RU2665513C1 |
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RU2761621C1 |
| METHOD OF PRODUCING PIGMENTS | 2018 |
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|
RU2633582C1 |
| METHOD OF PRODUCING SILICONE ADHESIVE AND ADHESIVE COMPOSITION | 2009 |
|
RU2467048C2 |
