Organic bismuth catalysts Product Bi-16 Bi-20 Bi-28 Performance 1. Selective polyurethane gel catalysts; 2. Compared with tin catalysts, it has better selectivity to nco, and end productsmechanical performance is better; 3. Induction time is short, viscosity increases gradually. Advantages of organic bismuth polyurethane catalysts 1. Safe & environmentally-friendly catalysts, can replace plumbum(pb) & mercury(hg) catalysts and tin catalysts which are being abolished by legislation; 2. Bi catalysts have a better stability to hydrolysis resistance than tin catalysts, reduce reaction selectivity with water, reduce sidereactions of nco group and water reaction in water-borne pu dispersing agent; 3. Promote the reaction of nco/oh , avoid sidereactions of nco and reduce co2 form; 4. In one-component system, emancipate the amine shielded by water, rather than promote the reaction of water and nco; 5. Combination of bismuth & zinc has synergy effect, making formulation and production more flexible, reducing energy consumption and increasing profits; 6. Can be used alone, or used together with amine or other organic metal compounds as auxiliary catalyst.