FIELD: manufacturing technology.
SUBSTANCE: present invention relates to a primer composition, a cured primer coating, a substrate, a multilayer coating, a coating method and a primer system. Said priming composition contains a prepolymer urethane-containing polyether containing thiol end groups, polyepoxide, from 5 to 9 wt% calcium carbonate and from 3 to 7 wt% magnesium oxide.
EFFECT: obtained composition is used to obtain non-chromate primer coatings, which show adhesion of thermoset epoxy systems and flexibility of polyurethane coatings.
19 cl, 1 dwg, 5 tbl, 2 ex
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