Comparison of polymer properties and process features for spinning

PTT and PET

Conclusion:

Unlike other introductions of new polymers to the industry, the introduction of PTT was accompanied by powerful marketing activities from the first. Shell has announced that it has a PDO production unit of 75,000t/a capacity on stream. Shells PTT polymer production is estimated to be in the range of 21,000t/a. Shells PTT activities are covered by the trade name Corterra. In 1998, DuPont acquired the PDO production of Degussa in Wesseling, Germany. This plant is producing about 12,000t/a PDO with the option to expand the capacity to 50,000t/a. DuPonts PTT activities are covered by the trade name Sorona.

The question of poly trimethylene terephthalate (PTT) is only appearing now and not 60 years ago, when it was invented, has many different answers. One reason is that at that time of invention, poly ethylene terephthalate (PET) was found to be the polymer with the broadest application potential in different industrial fields, including films for video and audio, textile fibre, technical films and packaging. Another reason was the limited avail-ability of 1,3-propanediol (PDO), which was expensive. However, PDO is now playing the major role in the industrial development of PTT. 

References:

1)       www.freepatentsonline.com/6495254

2)       www.intota.com/multisearch.asp

3)       www.technica.net/NF/NF1/eptt.htm

4)       sciencelinks.jp/j-east/article

5)       www.fbi.gov/hq/lab/fsc/backissu/july2001/houck.htm

6)       www.wipo.int/pctdb/en/wo.jsp

7)       www.swicofil.com/polytrimethyleneterephthalate.html

8)       en.wikipedia.org/wiki/Polyethylene_terephthalate

9)       www.springerlink.com/index/AV1DWAWEDCQPHTC3.pdf

10)     jit.sagepub.com/cgi/content/refs/31/3/159

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