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Fiber Applications Fibers of PTT Receive New U.S. Generic, ‘Triexta’ Article contributed by Dawson E. Winch Global Brand Manager DuPont Applied BioSciences Wilmington, Delaware, USA This year is a significant year in fiber history for several reasons. Seventy years ago, at the 1939 World’s Fair, nylon was introduced and women began wearing stockings made with nylon from DuPont. In 1959, 50 years ago this year, the Textile Identification Act was passed to create standards for fiber identification in apparel, carpet and other fiber markets. And most recently, in March of 2009, the U.S. Federal Trade Commission (FTC) issued a new subgeneric – ‘triexta’ – for fibers made from PTT (polytrimethylene terephthalate) polymer. Sorona ® is the brand name for renewably sourced PTT polymer from DuPont. In addition to its legacy of fiber innovation, DuPont has also led in the establishment of environmental goals. DuPont established its first environmental goals more than 19 years ago and as recently as 2006, set aggressive sustainability goals to meet or exceed by 2015. In addition to the operational goals of reducing its environmental footprint, for the first time DuPont established market facing goals. Sorona addresses one of these goals in particular, to reduce dependency on depletable (petrochemical) resources. DuPont Sorona ® renewably sourced polymer was created at the intersection where sustainability and fiber innovation meet. Sorona is just one product that utilizes Bio-PDO, the key and ‘green’ ingredient made using a fermentation process. And it is only one of many products in the DuPont Renewable Materials Program (DRSM). DRSM was developed to help DuPont customers identify those products that perform as well as or better than traditional petrochemical-based products AND contain a minimum of 20% renewably sourced ingredients by weight. By creating base monomers or building block molecules like Bio- PDO, using renewable resources instead of petrochemicals, DuPont has introduced a variety of materials for diverse markets and end uses from personal care products to industrial antifreeze to fibers for textiles and carpet. It is in these last two categories – textiles and carpet – where Sorona can be found. Apparel as well as residential and commercial interior markets can enjoy and benefit from the unique combination of attributes provided by Sorona, that led to the new generic, ‘triexta.’ APPAREL The versatility and adaptability of fibers made with Sorona compliment the needs by a wide variety of apparel applications. Since it can easily be blended with other fibers, both synthetic and natural, 14 bioplastics MAGAZINE [05/09] Vol. 4

fibers from Sorona, with its features and benefits, allows designers to take designs to new heights. The benefits of Sorona compliment the demands of swimwear manufacturers and consumers. Swimwear remains looking newer longer due to the chlorine and UV resistance, meaning prints and colors won’t fade or wash out due to repeated exposure to bright sun and harsh chlorine. And one swimsuit will last the whole season (at least) since it resists pilling. Speedo has adopted Sorona for swimwear in the United Kingdom. Intimate apparel designers and consumers appreciate the exceptional and luxurious softness and flattering drape provided by Sorona. Unlike other synthetics, these -fibers reach a bright white and a deep, rich black – both very popular colors in the intimate apparel market. And, due to its colorfastness and fade resistance blacks and whites won’t fade or yellow over time. Best of all for consumers is the easy care attribute of Sorona - no special washing instructions to follow. Activewear also benefits from the unique attributes and benefits of Sorona. As a polymer, it can be extruded in an odd cross section to increase the wicking ability of the fiber. Moisture management is enhanced with these fibers since the moisture transporting channels remain more clearly defined. And, fleece takes on a new level of softness since a microdenier feel can be obtained with fibers of greater than one denier. And, fiber and fabric is fade resistant from repeated washings, activewear colors remain bold and vivid through many work-outs and adventures. In blended fabrics popular in ready to wear, Sorona continues to provide wonderful benefits. Wool/Sorona blends offer softness and drape along with resistance to wrinkles – perfect for the business traveler who goes from plane to meeting. Cotton/Sorona blends offer softness and a comfort stretch and recovery to provide freedom of movement through the shoulders and elbows where consumers need it most. And, baggy, saggy knees and elbows are virtually eliminated since it also provides permanent recovery. This stretch and recovery leads to freedom of movement improving comfort and wearability in clothing. In other words, such blends enhance and maximize the fabric’s benefits. Spun Bamboo ® has incorporated blends of Sorona and bamboo into it’s lines of t-shirts and polo shirts. Timberland and Izod have also adopted Sorona into a line of fishing shirts and polo shirts respectively. Designers and apparel manufacturers appreciate the easy dyability of fibers made with Sorona since it reaches full color absorption at the boiling point of water. Unlike some other synthetic fibers, it doesn’t require additional heat, pressure or chemical carriers to dye. Fabrics print beautifully too – and prints remain sharp, vivid and Order now! Hans-Josef Endres, Andrea Siebert-Raths Technische Biopolymere Rahmenbedingungen, Marktsituation, Herstellung, Aufbau und Eigenschaften 628 Seiten, Hardcover Engineering Biopolymers General conditions, market situation, production, structure and properties number of pages t.b.d., hardcover, coming soon. New Book! This new book is available now. It is written in German, an English version is in preparation and coming soon. An e-book is included in the package. (Mehr deutschsprachige Info unter The new book offers a broad basis of information from a plastics processing point of view. This includes comprehensive descriptions of the biopolymer market, the different materials and suppliers as well as production-, processing-, usage- and disposal properties for all commercially available biopolymers. The unique book represents an important and comprehensive source of information and a knowledge base for researchers, developers, technicians, engineers, marketing, management and other decision-makers. It is a must-have in all areas of applications for raw material suppliers, manufacturers of plastics and additives, converters and film producers, for machine manufacturers, packaging suppliers, the automotive industry, the fiber/nonwoven/textile industry as well as universities. Content: • • • • • Definition of biopolymers Materials classes Production routes and polymerization processes of biopolymers Structure Comprehensive technical properties Comparison of property profiles of biopolymers with those of conventional plastics Disposal options Data about sustainability and eco-balance • • • • • • • • • • Important legal framwork Testing standards Market players Trade names Suppliers Prices Current availabilities and future prospects Current application examples Future market development • • Order your english copy now and benefit from a prepub discount of EUR 50.00. Bestellen Sie das deutschsprachige Buch für EUR 299,00. order at, by phone +49 2161 664864 or by e-mail bioplastics MAGAZINE [05/09] Vol. 4 15

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