Solvent-borne, two-pack, anticorrosion coating composition

A solvent-borne, two-pack coating composition, comprising

• (A) a master batch composition comprising
• a. one or more polymers and/or resins comprising functional groups, which are reactive toward the functional groups of the one or more crosslinking agents comprised in hardener component (B);
• b. one or more pigments and/or fillers;
• and
• c. one or more species containing a structural unit of formula (I)
• wherein two of the four residues R1 are OH and the other two residues R1 are H;
• R2═O or C═O;
• and R3—R4 is C═C or HC—CH;
• with the asterisks * depicting binding sites to residues R5 and R6 in formula (II) below or the residue CH—CH—CH—CH in formula (III) below;
• and
• the one or more species being selected from the group consisting of species of formula (II)
• wherein R5 is
• and R6═H or OH,
• the asterisk depicting the binding site to R4;
• R2═O;
• and R7 and R8 are H or OH, with the proviso that at least one of R7 and R8 is H;
• and/or species of formula (III)
• wherein R2 is C═O, wherein the compounds of formulae (II) and (III) are not encapsulated in mesoporous silica nanocontainers;
• and
• (B) a hardener composition comprising one or more crosslinking agents comprising functional groups, which are reactive towards the functional groups of the one or more polymers and/or resins;
• and optionally
• (C) a diluent composition.