C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
252/124, 402/139
C08G 18/08 (2006.01) C07D 487/08 (2006.01) C08G 18/20 (2006.01)
Patent
CA 1311478
122-P-US03263 ABSTRACT A 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, particularly a quaternary triethylenediamine compound. 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.
503268
Andrew Gary D.
Galla Edward A.
Ricci Robert L.
Air Products And Chemicals Inc.
Andrew Gary D.
Galla Edward A.
Mcfadden Fincham
Ricci Robert L.
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