Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1991-05-09
1992-02-25
Kight, III, John
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564497, 564504, 544162, 544402, 521115, 521118, 521155, 521166, 528 53, 528 73, C07D40108, C07D29512, C07C11908, C07C125067
Patent
active
050915835
ABSTRACT:
The invention pertains to tertiary amines used as catalysts for the preparation of polyurethane foams prepared via the catalytic reaction of a polyisocyanate with a polyol in the presence of blowing agents, etc. The tertiary amine catalysts are prepared by reacting an olefinic nitrile with aliphatic polyol having at least secondary hydroxyl functionality in a ratio less than stoichiometric for providing cyanoalkylated polyol having residual hydroxyl functionality. The resulting cyanoalkylated polyol then is reacted with a secondary amine under conditions for effective reductive alkylation.
The tertiary amine catalysts, because of residual secondary hydroxyl functionality, provide for uniform dispersion within a polyurethane, formulation; they provude for additional or extended pot life in polyurethane formulations at temperature below reaction condition, and they are bound by reaction on cure.
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Carr Richard V. C.
Casey Jeremiah P.
Petrella Robert G.
Wasilczyk George J.
Air Products and Chemicals Inc.
Brewer Russell L.
Kight III John
Marsh William F.
Simmons James C.
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