METHOD OF TREATING SURFACE OF PARTICLES OF INORGANIC PIGMENT AND METHOD FOR PRODUCTION OF PLASTICS, COATINGS AND LAMINATES USING SAID OBTAINED INORGANIC PIGMENT Russian patent published in 2017 - IPC C09C3/06 C09C1/36 C08K3/22 C08K9/02 D21H17/69 D21H21/28 

FIELD: construction.

SUBSTANCE: invention can be used in production of plastics, coatings or laminates. Method of treating surface of particles of an inorganic pigment involves obtaining an aqueous suspension of particles of an inorganic pigment. In a separate container inorganic compounds are precipitated from an aqueous solution by mixing at least two components in aqueous solution and with proper control of value of pH and/or temperature. Suspension of precipitation product is formed, which is then added to aqueous suspension of particles of inorganic pigment. Precipitation product consists of agglomerates of fine primary particles and/or separate crystals. Precipitated inorganic compounds are oxide or sulphate, for example an oxide of silicon, aluminium, zirconium or titanium or mixtures thereof.

EFFECT: invention increases covering capacity of inorganic pigments, their resistance to ageing, opacity, brightness and reducing power.

11 cl, 5 dwg, 1 tbl, 2 ex