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Poly(trimethylene terephthalate).svg

Sorona is DuPont's brand of triexta (polytrimethylene terephthalate).[1] It was named and commercialized in 2000.[2] The fibers are claimed to be both soft and extremely stain resistant, while exhibiting high strength and stiffness[3]

Sorona is a co-polymer of 1,3-propanediol (obtained by fermentation) and petroleum-derived terephthalic acid (TPA) or dimethyl terephthalate (DMT).[3] Related polymers in this series include polyethylene terephthalate (2GT) and polybutylene terephthalate (polytetramethylene terephthalate) (4GT).[4]

The polymer Sorona has been mentioned by J. Craig Venter in interviews[5] as an example of an application of industrial biotechnology. He was quoted as saying, "DuPont argues that Sorona is going to be the first billion-dollar biotech product other than a pharmaceutical." The renewable resource content of Sorona is 37% by weight.[3] DuPont won a 2003 Presidential Green Chemistry Challenge Award for their development of the fermentation process for production of 1,3-propanediol from corn-derived glucose in recombinant Escherichia coli K-12.[6]

Uses and Applications[edit]

Sorona has been used in the manufacture of clothing, residential carpets, and automotive fabrics and plastic parts.[7] Mohawk Industries is currently the exclusive North American carpet manufacturer making carpets using DuPont Sorona fiber.[8]


  1. ^ "Triexta - DuPont™ Sorona® - DuPont USA".
  2. ^ DuPont™ Sorona ® Selected As Brand Name For 3GT Polymer
  3. ^ a b c "Automotive".
  4. ^ Ward, I. M.; Wilding, M. A.; Brody, H. (1976). "The mechanical properties and structure of poly(m-methylene terephthalate) fibers". Journal of Polymer Science: Polymer Physics Edition. 14 (2): 263–274. doi:10.1002/pol.1976.180140206.
  5. ^ Decoding the DNA decoder - Cosmic Log -
  6. ^ Manahan, S.E. Environmental Chemistry, CRC Press, 2005, p. 503.
  7. ^ "Biopolymer for Carpet, Apparel and Automotive - DuPont™ Sorona® - DuPont USA".
  8. ^ "DuPont. The miracles of Science".