AQUEOUS-DISPERSION ANTICORROSION PRIMER Russian patent published in 2015 - IPC C09D5/08 

FIELD: chemistry.

SUBSTANCE: aqueous-dispersion anticorrosion primer includes a film-forming agent, a hydrophobic dispersant, a polyurethane thickener, an antifoaming agent, anticorrosion pigments, filler materials, coalescents, a neutralising agent and a solvent. The film-forming agent used is a NeoCryl XK styrene-acrylic dispersion, the hydrophobic dispersant is a high-molecular weight copolymer of acrylic acid with groups having affinity for pigments, obtained via controlled polymerisation, the polyurethane thickener used is a nonionic hydrophobically modified ethylene-based composite urethane copolymer and a urea-modified polyurethane with a branched structure, the antifoaming agent used is polyester siloxane copolymers containing colloidal silica, the anticorrosion pigments used are a complex of anticorrosion additives - aluminized zinc phosphate, red iron oxide pigment, zinc tetraoxychromate, strontium chromate, sodium nitrite, the filler materials used are barium sulphate, calcium carbonate, talc, mica, the coalescents used are dipropylene ether of mono n-butyl ether, butyl glycol, tripropylene glycol butyl ether, the solvent is water, with a defined ratio of components.

EFFECT: invention enables to obtain a coating which is resistant to negative climatic factors, mineral oil and different solvents.

6 cl, 3 tbl