Dyed copolyesters and method of making
AssigneeProduits Chimiques Ugine Kuhlmann
InventorAlain Yves Le Pape
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Abstract
New dyed copolyesters and their preparation are disclosed. The copolyesters are characterized in that their macromolecular chains include dye moieties chosen from among those of the formulae: ##STR1## in which X is a hydrogen atom or a hydroxy group; X' is a halogen atom; Y is an alkoxy residue, Z.sub.1 is a hydrogen atom or a halogen atom or an alkyl or alkoxy residue and Z.sub.2 is a hydrogen atom or an acylamino residue. These copolyesters can be converted into textile fibers or be used for dyeing of bulk plastic materials and synthetic fibers.
Claims4
A dyed copolyester wherein the macromolecular chain of the copolyester comprises a unit selected from those of the formulae:
- ##STR11## where X is hydrogen or hydroxy, X' is halogen, Y is alkoxy, Z.sub.1 is hydrogen, halogen, alkyl or alkoxy and Z.sub.2 is hydrogen or acylamino.
Dependencies are inferred from the claim text.