Process for preventing oligomer deposits on dyed polyester textile material
AssigneeCiba-Geigy Corporation
InventorsPaul Schafer, Heinz Abel
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Abstract
A process for preventing oligomer deposits on dyeings produced on textile material consisting of or containing polyester fibers, which process comprises applying to said material during or after dyeing a phthalic acid ester of the formula ##STR1## wherein R is alkyl or alkenyl of 6 to 22 carbon atoms, X.sub.1 and X.sub.2, is hydrogen or methyl and the other is hydrogen, Z is hydrogen or alkyl of 1 to 4 carbon atoms, and n is 1 to 4.
Claims16
A process for preventing oligomer deposits on dyeings produced on polyester textile material containing up to 100 polyester fibers, which process comprises applying to said material during or after the dyeing procedure a phthalic acid ester of the formula ##STR6## wherein R is alkyl or alkenyl of 6 to 22 carbon atoms, one of
- X.sub.1 and X.sub.2, is hydrogen or methyl and the other is hydrogen,
- Z is hydrogen or alkyl of 1 to 4 carbon atoms, and
- n is 1 to 4.
Dependencies are inferred from the claim text.