Patent ID: 8318836

Claim:
A curable liquid medium comprising: a) from 1 to 90 wt % of an alkyd-based resin; and, b) from 0.0001 to 0.1 wt % of a siccative, wherein the siccative is an iron or manganese complex of a tetradentate, pentadentate or hexadentate nitrogen donor ligand, wherein the ligand is: wherein each R 1 , R 2 independently represents —R 4 —R 5 , R 3 represents hydrogen, optionally substituted alkyl, aryl or arylalkyl, or —R 4 —R 5 , each R 4 independently represents a single bond or optionally substituted alkylene, alkenylene, oxyalkylene, aminoalkylene, alkylene ether, carboxylic ester or carboxylic amide, and each R 5 independently represents an optionally N-substituted aminoalkyl group or an optionally substituted heteroaryl group selected from pyridinyl, pyrazinyl, pyrazolyl, pyrrolyl, imidazolyl, benzimidazolyl, pyrimidinyl, triazolyl and thiazolyl.