Stable polyol-melamine blend for use in the manufacture of fire retardant flexible urethane foam
AssigneeAshland Oil, Inc.
InventorsCarl Scaccia, Dennis H. Fisher, Peter E. Throckmorton
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Abstract
Blends of polyol and melamine for use in the manufacture of fire retardant polyurethane foams are stabilized by the addition of diethanolamine, ethanolamine, trihexylamine, or mixtures thereof.
Claims12
A storage stable suspension of a polyol, melamine and an amine compound for use in the synthesis of flame retardant polyurethane foams which suspension comprises;
- polyol, melamine and an effective stabilizing amount of an amine compound selected from the group consisting of diethanolamine, ethanolamine, trihexylamine, or mixtures thereof.
In a method of manufacturing fire retardant polyurethane foams wherein a first reaction stream containing polyol and melamine is combined with a second reaction stream containing polyisocyanate and foaming agent and a third reaction stream containing surfactant, reaction catalyst and water, the improvment which comprises the addition of an effective stabilizing amount of an amine compound selected from the group consisting of diethanolamine, ethanolamine, trihexylamine or mixtures thereof to said first reaction stream creating a stable polyol-melamine suspension stream.
Dependencies are inferred from the claim text.