FASCAT® 4202

FASCAT® 4202 by PMC Group is dibutyltin dilaurate. Acts as a crosslinking catalyst. It is insoluble in water and most common organic solvents. Is stable to hydrolysis but will hydrolyze in the presence of aqueous caustic at room temperature. It drives the addition of alcohols with isocyanates to accelerate and complete the formation of urethanes. Used in various urethane cross-linking reactions and silanol condensation reactions. It can be used as a gelling catalyst in the manufacture of polyurethane adhesives and sealants. FASCAT® 4202 is also used to crosslink RTV silicone systems for the caulk and sealant markets.