Controlled release catalysts and curing agents for making polyurethane and/or polyisocyanurate product
AssigneeAir Products and Chemicals, Inc.
InventorsCharles G. Coe, Robert G. Petrella
Life of this patent
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Abstract
Preparation of a polyurethane and/or polyisocyanurate product by the reaction of a composition containing an organic polyisocyanate, an active hydrogen containing compound and water as a blowing agent using an effective amount of a molecular sieve containing sorbed amine catalyst and/or crosslinker.
Claims20
In a method for the preparation of a polyurethane foam product, polyisocyanurate foam product, or mixtures thereof by reacting an organic polyisocyanate, a polyol and water as a blowing agent in the presence of an amine catalyst, the improvement which comprises employing, per 100 parts polyol, 0.2 to 2.5 parts by weight molecular sieve containing sorbed amine catalyst.
In a method for the preparation of a polyurethane foam product, polyisocyanurate foam product, or mixtures thereof by reacting an organic polyisocyanate, a polyol and water as a blowing agent in the presence of an amine catalyst, the improvement which comprises employing, per 100 parts polyol, 0.2 to 2.5 parts by weight sodium X zeolite containing 5 to 20 wt. % sorbed triethylenediamine.
In a method for the preparation of a polyurethane foam product, polyisocyanurate foam product, or mixtures thereof by reacting an organic polyisocyanate, a polyol and water as a blowing agent in the presence of an amine catalyst, the improvement which comprises employing, per 100 parts polyol, 0.2 to 2.5 parts by weight sodium Y zeolite containing 5 to 20 wt. % sorbed triethylenediamine.
Dependencies are inferred from the claim text.