| abstract |
Provided is an organic tin-free cationic electrodeposition coating composition which does not contain organic tin compound and can sustain a superior coating curability under currently used baking conditions, and to a catalyst for the composition. A catalyst for electrodeposition coating composition containing a bismuth compound (A), wherein: the bismuth compound is a compound having a ligand prepared from a β-diketone represented by Chemical Formula (1) is provided. n n n n n n n n n n (wherein, a plurality of R 1 are the same or different from each other and represent a hydrocarbon group, and a number of total carbon atoms in two R 1 is 4 or larger) |