2-Methylimidazole as a Co-Catalyst in Specific Polyurethane Foam Formulations: A Comprehensive Review Abstract: This article provides a comprehensive review of the role of 2-methylimidazole (2-MI) as a co-catalyst in specific polyurethane (PU) foam formulations. While tertiary amines are commonly employed as catalysts in PU foam production, 2-MI offers a unique combination of reactivity and selectivity,...