TITANIUM DIOXIDE BASED PIGMENT, METHODS OF PRODUCING TITANIUM DIOXIDE BASED PIGMENT AND PIGMENT OBTAINED USING ONE OF SAID METHODS, DECORATIVE PAPER, METHOD OF MAKING DECORATIVE PAPER, METHOD OF MAKING DECORATIVE COATING MATERIALS AND DECORATIVE COATING MATERIALS Russian patent published in 2012 - IPC C09C1/36 C09C3/00 D21H17/69 D21H19/38 

FIELD: chemistry.

SUBSTANCE: titanium dioxide based pigment, containing titanium dioxide particles, has a coating layer containing aluminium phosphate and aluminium oxide, and said layer additionally contains hollow particles. To obtain said pigment, aqueous suspension of titanium dioxide is prepared first, and aluminium- and phosphorus-containing components are then added, after which hollow particles are added and pH of the suspension is brought to 4-9. Also, aqueous suspension of titanium dioxide can be obtained at pH not lower than 10, and aluminium- and phosphorus-containing components can then be added while maintaining pH of at least 10, after which hollow particles are added. Further, pH of the suspension is brought to 4-9 and an aluminium oxide coating is then applied at pH from 4 to 9.

EFFECT: invention increases opaqueness and retention of pigment when making decorative paper.

22 cl, 1 dwg, 1 tbl, 1 ex