Flame retardant polyol compositions and their preparation
AssigneePennwalt Corporation
InventorsStanley R. Sandler, Mabel M. Chen
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Abstract
A flame retardant polyol composition is prepared by reacting chloral with a compound selected from the group consisting of urea, diethanolurea, dipropanolurea, thiourea, sulfamide and mixtures thereof in the presence of a polyhydroxy composition having 2 to 8 hydroxy groups. These compositions are useful for preparing flame retardant polyurethane foams.
Claims12
A process for preparing an anhydrous liquid flame retardant composition in a polyol comprising reacting 0.5 to 2.0 moles of chloral per 0.5 to 1.5 moles of a member selected from the group consisting of urea, diethanolurea, dipropanolurea, thiourea, sulfamide and mixtures thereof in the presence of a polyhydroxy composition having 2 to 8 hydroxy groups and in the absence of a catalyst.
Dependencies are inferred from the claim text.