Fmc Corporation

Avtex Fibers Inc.

John T Gresham

Harry M Castrantas

Flame-retardant polyester fibers containing 5 to 20% by weight of 3,9-diphenyl-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane-3,9-dioxide , a novel compound, as the sole frame-retardant additive or a two-component additive comprising the aforesaid spirophosphonate in admixture with 20 to 80% of certain polychlorinated or polybrominated diaryl compounds.

Flame-retardant polyester fiber compositions

Fluorinated ether-acrylic esters of the formula ##STR1## wherein R is hydrogen or methyl, R.sub.f is a perfluoroalkyl group of 4-16 carbon atoms, n is 1-12, m is 2-3 and p is 1-4 are disclosed. Also disclosed are polymers of such esters for use in rendering textiles oil and water repellent.

Fluorinated ether-acrylic esters and polymers thereof

Peracids and a water-soluble inorganic polyphosphate salt are used in the treatment of dirty dry cleaning baths to permit longer operation between distillation.

Peracid treatment of dry cleaning baths

Textile fabric stain removal is significantly improved by including in conventional dry cleaning solvent baths, a preformed or in situ generated peracid.

Dry cleaning with peracids

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.

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Skillman, NJ, United States of America

John T Gresham