Polyester fiber of easy dyeability
AssigneeIndustrial Technology Research Institute
InventorsI-Min Tseng, Tung-Ying Kuo, Wen-Chuan Shu, Jih-Chen Huang
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Abstract
The present invention provides a polyester fiber of easy dyeability. The propylene chain of polypropylene terephthalte (PPT) of easy dyeability is incorporated into the main chain of polyethylene terephthalate (PET), and a PPT/PET copolyester having both ethylene and propylene groups can thus be formed. The PPT/PET copolyester is then spun into a copolyester fiber. The copolyester fiber of the present invention can be successfully dyed with a disperse dye at a temperature below 100° C. in the absence of a dye carrier.
Claims12
A polyester fiber of easy dyeability, comprising polypropylene terephthalate/polyethylene terephthalate (PPT/PET) copolyester, wherein the copolyester includes the following repeating unit (I) and repeating unit (II),
- wherein the backbone structure of the copolyester includes ethylene and propylene, and wherein the molar ratio of the ethylene to propylene ranges from 99/1 to 1/99.
Dependencies are inferred from the claim text.