Valikat^® DCC 4110 is a metal carboxylate-based polyurethane catalyst blend consisting of bismuth and zinc. It provides a safe, environmentally friendly alternative to lead, mercury, and tin catalysts that have hazardous characteristics. This polyurethane crosslinker is effective with both aromatic and aliphatic isocyanates and offers an improved back end and a longer pot life. Valikat^® DCC1410 provides delayed curing for applications that require long open times.