polycat 520 is a tertiary amine-based foaming catalyst that facilitates urea (water-isocyanate) reactions in a variety of hard and soft polyurethane foam applications. it is the industry standard foaming catalyst for hard foams and is used in mdi-based on-site casting polyurethane systems, such as rigid appliances. it is also used in combination with trimer catalysts...

polycat 520 is a tertiary amine-based foaming catalyst that facilitates urea (water-isocyanate) reactions in a variety of hard and soft polyurethane foam applications. it is the industry standard foaming catalyst for hard foams and is used in mdi-based on-site casting polyurethane systems, such as rigid appliances. it is also used in combination with trimer catalysts...