AQUEOUS COMPOSITION FOR SURFACE MATTING Russian patent published in 2021 - IPC C09D133/02 

FIELD: coatings.

SUBSTANCE: invention relates to an aqueous composition for surface matting. The aqueous composition contains acrylic microspheres of the first type in the amount from 10 to 65% by wt. per the weight of the coating composition, while their calculated T_g value is within the range from -30 to 10°C, and an average particle diameter is from 0.1 to 2 mcm; acrylic microspheres of the second type in the amount from 20 to 80% by wt. per the weight of the coating composition, while their calculated T_g value is within the range from -60 to 0°C, and an average particle diameter is from 0.5 to 30 mcm; an acrylic and/or polyurethane binder in the amount from 10 to 30% by wt. per the weight of the coating composition, while an average particle diameter is from 0.03 to 0.5 mcm; a sliding additive in the amount from 0.1 to 20% by wt. per the weight of the coating composition, while the additive contains a silicon emulsion, a wax dispersion and a polyurethane dispersion.

EFFECT: improvement of color rendering, increase in abrasion resistance, reduction of the friction coefficient, and soft tactile sensation of matted surfaces.

8 cl, 7 tbl