CHEMICALLY STABLE COATING COMPOSITION Russian patent published in 2006 - IPC C09D127/24 

FIELD: paint-and-varnish industry.

SUBSTANCE: invention relates to chemically stable coating compositions destined to protect, in a multilayer manner, equipment, metallic structures as well as concrete and reinforced concrete units operation under in-door and out-of-door conditions against action of corrosive chemical production gases and vapors and against prolonged action of spilled concentrated acids and alkali solutions, prolonged action of salt solutions at temperature not higher than 60°C. Composition contains varnish based on perchlorovinyl resins as principal film forming substance, pigments: titanium dioxide and/or graphite, filler: microtalc, sodium nitrite as corrosion inhibitor, organic solvent, and additional film-forming substance: mixture of chlorinated C₁₂-C₃₀-paraffins having general formula: C_nH_2n+2-xCl_x (n=12-30 and x=18-23), containing at least 70 wt % chlorine, in amount 5.52-28 wt %.

EFFECT: enhanced chemical stability and adhesion of coatings.

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