Diol compositions
AssigneeSherex Chemical Company, Inc.
InventorsHoward M. Hickman, Gary W. Earl
Life of this patent
Estimating the term…
Abstract
A polyol composition consisting essentially of a homogenous liquid admixture of propylene glycol and a diol obtained by alkoxylating a propylene glycol dispersion of 3,3',5,5'-tetrabromobisphenol A with ethylene oxide, propylene oxide or mixtures thereof. These polyol compositions are useful in preparing fire and chemical resistant thermosetting resinous compositions.
Claims8
A diol-containing composition capable of remaining as a substantially clear liquid for an extended period of storage at a temperature moderately in excess of ambient, said composition prepared by subjecting to an adduction reaction, a mixture of propylene glycol and 3,3',5,5'-tetrabromobisphenol A wherein the weight ratio of said propylene glycol and said 3,3',5,5'-tetrabromobisphenol A is from about 3:92 to 1:2, respectively, with ethylene oxide or propylene oxide or mixtures thereof in an amount of 2-2.2 moles of the oxide per mole of the 3,3'5,5'-tetrabromobisphenol A;
- and reacting the resultant solution of diols obtained thereby with from about 0.2-0.5 mole of maleic anhydride or phthalic anhydride per mole of the 3,3',5,5'-tetrabromobisphenol A-alkylene oxide adduct.
Dependencies are inferred from the claim text.