Amine catalysts for polyurethane foams
AssigneeHoneywell International Inc.
InventorsMichael Van Der Puy, David J. Williams, Haridasan K. Nair, David Nalewajek
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Abstract
The invention provides polyurethane and polyisocyanurate foams and methods for the preparation thereof. More particularly, the invention relates to open-celled, polyurethane and polyisocyanurate foams and methods for their preparation. The foams are characterized by a fine uniform cell structure and little or no foam collapse. The foams are produced with a polyol premix composition which comprises a combination of a hydrohaloolefin blowing agent, a polyol, a silicone surfactant, and a sterically hindered amine catalyst.
Claims16
A polyol premix composition which has been aged for a period of at least three days and which comprises a combination of a blowing agent comprising trans-1-chloro-3,3,3-trifluoropropene (transHFCO-1233zd), a polyol, a silicone surfactant, and an amine catalyst comprising one or more morpholines and/or one or more imidazoles.
Dependencies are inferred from the claim text.