Cyclic quaternary hydroxyalkyl phenoxide catalysts for isocyanate reactions
Catalysis of organic isocyanate reactions
Quaternary hydroxyalkyl tertiary amine bases as polyurethane catalysts
Metallic quaternary ammonium carboxylates as polyisocyanurate catalysts
ApplicationNo. 06/670705 filed on 11/13/1984
US Classes:521/118, -C-XH ingredient contains a nitrogen atom252/183.12, With stabilizer or inhibitor502/164, Quaternary ammonium or phosphonium521/902, CELLULAR POLYMER CONTAINING AN ISOCYANURATE STRUCTURE528/49, Material contains only one -C-XH,-C-C(=X)-XH or carbon to -NH or HNH group528/52Material is organic nitrogen-containing compoud
ExaminersPrimary: Cockeram, Herbert S.
Attorney, Agent or Firm
International ClassesC08G 18/20 (20060101)
C08G 18/18 (20060101)
C08G 18/00 (20060101)
AbstractA method for preparing polyurethane product by the reaction of an organic polyisocyanate with a polyester or polyether polyol in the presence of a catalytically effective amount of a catalyst system consisting essentially of a tertiary amine and 1 to 35 wt %, based on the tertiary amine, of an N-hydroxyalkyl quaternary ammonium carbonylate salt. The use of such catalyst system advantageously improves the cure time of the urethane reaction, when compared to a system containing solely a tertiary amine, while maintaining the same initiation of the reaction. This advantage can be transferred to a delay in the initiation time while maintaining or shortening the cure time by adjustments in the total amount of the catalyst system used.