WHITE PIGMENT Russian patent published in 2017 - IPC C09C1/36 C09D7/12 C01B33/26 C01F7/02 B01J13/02 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and can be used for making pigments for varnishes and paints. Pigment contains shell and core. Shell is made of titanium dioxide. Core is made from kaolin with weight content of aluminium silicates of not less than 97 %. Weight ratio of shell material to core material is 0.66–4.0, fractional composition of core material from 2 to 5 mcm, and shell material from 0.2 to 0.5 mcm.

EFFECT: invention improves quality of pigment, increases resistance to destruction in operating conditions, storage and transportation.

1 cl, 9 ex