Eco-Friendly Solution: Trimethylaminoethyl Piperazine Amine Catalyst in Sustainable Polyurethane Chemistry Introduction Polyurethane (PU) is a versatile polymer material finding widespread applications in coatings, adhesives, sealants, elastomers, foams, and textiles. Traditional PU synthesis relies heavily on petroleum-based polyols and isocyanates, coupled with catalysts, often organometallic compounds, which raise concerns regarding environmental sustainability and human health. The...