Mercury-Free Polyurethane Elastomer Catalysts: A Comprehensive Review

📌 introduction polyurethane elastomers (pues) are a versatile class of polymers widely used in various applications, including coatings, adhesives, sealants, and elastomers. their exceptional mechanical properties, chemical resistance, and processability contribute to their widespread adoption. traditionally, organomercury compounds, particularly dibutyltin dilaurate (dbtdl), have been the workhorse catalysts in pue synthesis, accelerating the reactions between isocyanates and polyols. however, due to the well-documented toxicity and bioaccumulation of…