Phosphate esters
AssigneeFMC Corporation
InventorJohn T. Gresham
Life of this patent
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Abstract
Flame-retardant polyester fibers containing 5 to 20% by weight of phosphate triester containing at least one mole of a hydroxymethyl bicyclic phosphate and 0-2 moles of a phenyl or naphthyl aryl compound as the sole flame-retardant additive or a two-component additive comprising the aforesaid triester in admixture with 20 to 80% of certain polychlorinated or polybrominated diaryl compounds.
Claims4
A compound of the formula ##EQU3## where R is an aryl radical selected from the group consisting of phenyl and naphthyl radicals and phenyl and naphthyl radicals containing one to three chlorine or bromine atoms and substituted derivatives of said radicals, the substituents being selected from the group consisting of methyl, methoxy, phenyl, phenoxy and phenyl and phenoxy containing 1 to 5 chlorine or bromine atoms and y is a integer, 1 to 1, and x is 3 - y.
Dependencies are inferred from the claim text.