Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Patent
1988-07-29
1990-02-27
Kight, John
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
540472, C04G 1914, B01J 3100
Patent
active
049046292
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 preferred quaternary composition is the reaction product of an alkylene oxide in excess of equimolar amount with triethylenediamine in the presence of an acid. 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.
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Andrew Gary D.
Galla Edward A.
Ricci Robert L.
Air Products and Chemicals Inc.
Daley Dennis R.
Kight John
Leach Michael
Marsh William F.
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