STABLE MIXTURES COMPRISING COVERING POWER-CONFERRING PIGMENTS Russian patent published in 2006 - IPC C09C1/36 C09D7/00 C09D17/00 

FIELD: paint and varnish industry.

SUBSTANCE: invention proposes a flowing pigment mixture comprising titanium dioxide of universal sort or sort used in internal works with the concentration 40-100 vol.%, a thickening agent, dispersing agent and, optionally, water. The volume content of dry TiO₂ is 15%, not less. As a thickening agent the mixture can comprise at least one hydrophobically modified ethyleneoxide-urethane polymer or at least one hydrophobically modified alkali-soluble emulsion, or at least one hydrophobically modified hydroxyalkylcellulose. As a dispersing agent the indicated mixture can comprise, for example, copolymers of maleic acid and diisobutylene, or butyl methacrylate and methacrylic acid, or acrylic acid and hydroxypropyl acrylate. Mixture can comprise additionally one or more additive taken among the following series: froth breaker, surface-active substance, coalescent agent, base, biocide, mildewcide agent, combined disperser, polymeric binding agent, a polymer with cellular latex particles. Proposed mixtures are stable and don't require a stirring. Invention can be used in preparing universal dyes and dyes for internal finishing.

EFFECT: improved preparing method, improved and valuable properties of mixtures.

20 cl, 13 tbl, 8 ex