LIQUID HARDENING Russian patent published in 2012 - IPC C09F9/00 C09D167/08 D06N1/00 C09D11/02 C11D3/39 C07D471/08 

FIELD: chemistry.

SUBSTANCE: invention relates to curing agents for air-drying alkyd-based resins, coating compositions, such as paint, varnish, wood stain, inks and linoleum floor coverings. Described is a curable liquid medium containing a) from 1 to 90 wt % of an alkyd-based resin and b) from 0.0001 to 0.1 wt % of a siccative in form of an iron or manganese complex with a tetradentate, pentadentate or hexadentate nitrogen donor ligand.

EFFECT: said siccative has high activity and enables hardening of compositions at relatively low concentration in a curable liquid medium.

19 cl, 8 tbl, 5 ex