HR foams made with reactive polyol compositions having improved stability
AssigneeBASF Wyandotte Corporation
InventorsJohn G. Demou, Edward R. Pray, Robert L. McBrayer
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Abstract
HR or high resiliency polyurethane foams having improved processing stability are prepared from reactive urethane formation promoting active hydrogen-containing compositions which have been pre-treated with carbon dioxide or a weak acid. The pre-treated active hydrogen-containing composition is, then, reacted with an organic polyisocyante to form the foams hereof.
Claims30
A reactive mixture for the preparation of a high resiliency polyurethane foam, comprising:
- (a) an active-hydrogen containing compound;
- (b) a cross-linking agent containing reactive amine;
- and
- (c) an amine reactive stabilizer selected from the group consisting of carbon dioxide and an acid which is reactive with the cross-linking agent such that it reduces the activity thereof to be substantially equal to that of the active-hydrogen containing compound.
A method for stabilizing a reactive mixture of an active-hydrogen containing compound and a cross-linking agent used for the preparation of high resiliency polyurethane foams, comprising:
- introducing into the mixture a stabilizer which is either carbon dioxide or a weak acid.
Dependencies are inferred from the claim text.