PRIMING COMPOSITION FOR PROTECTING METAL SURFACES FROM CORROSION Russian patent published in 2011 - IPC C09D5/08 C09D5/10 C09D167/08 

FIELD: chemistry.

SUBSTANCE: composition contains the following in wt %: 16-23 film-forming agent; 38-40 mixed pigments; 2.0-3.0 organic complexing agent - tanning and derivatives thereof; 1.0-2.0 inorganic filler - talc; 3.0-4.0 mixture of C₂-C₄ alcohols and an organic solvent - the rest. The film-forming agent is 12-15 wt % alkyd varnish and additional 4-8 wt % synthetic chlorinated rubber. The mixed pigments are in form of a mixture of zinc oxide, zinc powder and micaceous iron. The mixture of alcohols contains ethyl alcohol, butyl alcohol and isobutyl alcohol in ratio 1.0:1.0:1.4. The invention enables to obtain compositions with service life of coatings of at least 10-15 years.

EFFECT: coatings have good impact properties and high rate of drying, priming composition does not require surface mechanical pre-treatment in order to remove scales and rust.

6 cl, 3 tbl, 3 ex