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PTT (polytrimethylene terephthalate) is a thermoplastic that can be spun into both fibers and yarns. PTT belongs to a class called aromatic polyesters. 

In both carpet and textile markets, PTT combines the chemical resistance characteristics that you can get from a polyester with the elastic recovery and resilience of nylon. PTT also offers inherent stain resistance, is continuously printable and dyeable without speciality chemicals in a full colour range. 
Furthermore, PTT has a good colour fastness against UV light, ozone and NOx. PTT provides lower water absoroption and has the potential to be recycled. 

Many of these same properties make CORTERRA Polymers good candidates for conversion into film, non-woven fabric and monofilament. For engineering thermoplastic applications, CORTERRA Polymers can be compounded to provide performance properties and processing characteristics that are similar to polybutylene terephthalate (PBT).



PTT combines the best properties of nylon and polyester. Whether used in carpet, garments, home furnishings or automotive fabrics, PTT products look better longer. Compared with other synthetic fibers like nylon and acrylic, PTT feels softer, dye easier, retain vibrant colors longer, stretch and recover better. More important, PTT resists staining, clean easily and dry quickly.


PTT compared with other aromatic polyester


It is the first significant new material in the textile and carpet industry for some time. It provides manufacturers with a wider range of options for new products than they have now. As a stain- and static-resistant material, for example, PTT has those properties built in. These properties are not the result of additives.

In carpeting, PTT feels like wool and perform equal to or better than PA6.6. But they hold dyes much better, and that means manufacturers will have a wider colour spectrum to chose from and produce carpets with a lasting, visual beauty.

In apparel, PTT offers performance that is equal to or better than PA6.6 and PET, including comfort fit due to superior stretch and recovery, excellent drape and softness and easy care due to stain resistance and a choice of care procedures.


The target of PTT is not to take market share for PA or PP but to change the consumers perception of polyester in general, to regain market share partially lost by polyesters previously poor image. Once textured: 

  • PTT will have slightly more power stretch and recovery than PBT and more than PA 6.6, PA 6 and PET
  • can be easily dyed at 100°C and can be mixed with other fibers. It will offer stain resistance, chlorine resistance and a good resilience
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