The present disclosure relates to polymer compounds for use as polymerization agents in coatings, paints or inks. In one embodiment, a polymer compound comprises a metal-bearing urethanized polymer having a metal content greater than 6% by weight, and a water solubility below 20 mg/l according to OECD 105, wherein the urethanized polymer is soluble in a low-volatile organic compound (low-VOC) solvent. Methods of producing and using such polymer compounds are also disclosed.