Production of rigid polyurethane or polyisocyanurate foams

The invention relates to a composition for producing rigid polyurethane or polyisocyanurate foams, comprising at least one isocyanate component, a polyol component, optionally a foam stabilizer and optionally a blowing agent, the composition comprising at least one catalyst that catalyzes the formation of polyurethane or isocyanurate bonds, the catalyst comprises a zinc salt and/or a zinc-containing formulation. 本发明涉及一种用于生产硬质聚氨酯或聚异氰脲酸酯泡沫的组合物，其包含至少一种异氰酸酯组分、多元醇组分、任选存在的泡沫稳定剂和任选存在的发泡剂，其中所述组合物包含至少一种催化聚氨酯或异氰脲酸酯键形成的催化剂，所述催化剂包含锌盐和/或含锌制剂。