Producing spinnable and dyeable polyester fibers
AssigneeBASF SE
InventorsPia Baum, Klaus Scheuermann
Life of this patent
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Abstract
The present invention relates to a process for producing dyed polyester fibers (C) from a terephthalate polyester (A), at least one polyester-containing additive (B) and optionally at least one component (G). The polyester-containing additive is obtainable by condensation of the monomers of an aliphatic 1,ω-diol, of an aliphatic 1,ω-dicarboxylic acid and of an aromatic 1,ω-dicarboxylic acid. Optionally, chain extenders (V) are also used in the production of the polyester-containing additive (B). For fiber production, the components (A), (B) and optionally (G) are mixed, melted in an extruder and extruded through spinneret dies. These polyester fibers (C) are preferably used in the production of dyed textile fabrics (F).
Claims19
1-18. (canceled)
A process for producing dyed polyester fibers (C), dyed yarn (E) and/or dyed textile fabric (F) from the components
- a) 80% to 99% by weight, based on the sum total of all the constituents of the fibers, of at least one terephthalate polyester (A),
- b) 1% to 20% by weight, based on the sum total of all the constituents of the fibers, of at least one polyester-containing additive (B) obtainable from the monomers m
- m1) aliphatic 1,ω-diol,
- m2) aliphatic 1,ω-dicarboxylic acid,
- m3) aromatic 1,ω-dicarboxylic acid, and
- optionally at least one chain extender (V),
- and
- c) optionally at least one component (G)
- comprising the steps of
- I) mixing the components (A), (B) and, if used, one or more components (G),
- II) producing polyester fibers (C) from the mixture obtained in step I),
- III) optionally further processing the polyester fibers (C) into yarn (E) and/or textile fabric (F), and
- IV) dyeing the polyester fibers (C), the yarn (E) and/or the textile fabric (F) at a temperature of <130° C.
Dependencies are inferred from the claim text.