Similar to polyethylene terephthalate, the PTT is used to make carpet fibers.

PTT's value as a commercial polymer has improved due to more economical and efficient methods to produce 1,3-propanediol in the 1980s by Degussa, via acrolein, and Shell via the hydroformylation of ethylene oxide.

On Friday, March 20, 2009, the Federal Trade Commission approved a subclass to polyester called triexta.

[4] The PTT fiber used in Mohawk's SmartStrand carpet, and branded Sorona by Dupont can be labeled triexta.

Triexta has been reported to have several advantages over polyethylene terephthalate, including better stain resistance and softness.