Dacron, polyester fiber

M. C. Keen and R. J. Thomas, "Absorption Properties of Latyl Disperse Dyes on AppHcation to Dacron Polyester Fibers," Eyes and Chemicals Technical Bulletin, E. I. du Pont de Nemours Co., Inc., Organic Chemicals Dept., Wilmington, Del., 1992. 

Market. Reproduced by permission p. 92 Carpet trader in Sarajevo. Photograph. David Reed/Corbis. Reproduced by permission p. 94 Dacron polyester fibers, photograph. 

By that time, W. R. Remington and I were once again separated this time my new leader was Dr. Albert Bauer, with whom I had worked at Orchem some 25 years earlier. Then, Robert Terss, Al, and I were a three-man team, which was, to identify new classes of dyes for acid-modified Dacron polyester fiber. After that work, he was transferred to a position in the Freon business. He now was transferred back to the Orchem Research Division to impart some of the wisdom that he had accumulated in that field to another business area. Bauer and I wrote several proposals for work to be undertaken by me on behalf of the Photo Products Department and submitted these to Botsolas. We set a low price tag of 25,000 on each proposal. We rationalized that this was a bargain for the Photo Products Department, but then, the Organic Chemicals Department would gain potential new business manufacturing the chemicals. 

Like amides, esters are common both in nature and in the chemical industry. Animal fats and vegetable oils are mixtures of esters, as are waxy materials such as beeswax and spermaceti. Plants often synthesize esters that give the characteristic tastes and odors to their fruits and flowers. In addition to making synthetic esters for flavors, odors, and lubricants, chemists have made synthetic polyesters such as Dacron polyester fiber used in clothing and Mylar polyester film used in magnetic recording tapes. 

Polyesters Right now, you are probably using at least five things that are made from polyesters. Your clothes probably have some Dacron polyester fiber in them, and they are almost certainly sewn with Dacron thread. Ancient computers used floppy disks made of Mylar , and the optical film in your DVD is made of Mylar . Some of the electronics in your cell phone are probably potted (covered and insulated from shock) in Glyptal polyester resin. The soft drink in your hand probably came in a plastic bottle that was blow-molded from polyethylene terephthalate) resin, better known as PET. 

Polyester. Polyester is made by the polymerization reaction of a diol and a diester. The main commercial polymer is formed by a condensation reaction using ethylene glycol and terephthalic acid. Fibers are formed by meltspinning. Commercially introduced in 1953 by the DuPont Company as Dacron, polyester fibers have high strength, and very low moisture absorbance. The fiber is usually spun with a round cross section. Polyester is the most-used synthetic fiber around the world. 

Latyl [Du Pont], TM for a group of disperse dyes developed particularly for coloration of Dacron polyester fiber, on which they have exceptionally good light- and wetfastness properties. 

Polyethylene terq>hthalate is used in the manufacture of Dacron polyester fiber, Mylar polyester film, and Cronar photographic film base in the United States. In Canada, England, and some European countries, the commercial articles are called Terylene. In Germany, the film is called Hostaphan. Total capacity for producing polymer and its products in this country is in excess of SO anillion lb per year. 

In England and Canada and several European countries, polyethylene terephthalate fibers are sold under the name Terylene. In England the film is called Melinex, in Germany, Hostaphan. In the United States the products are trade-marked and marketed as Dacron polyester fiber. Mylar polyester film, or Cronar photographic film base. 

The crude polyester can be melted, extruded, and then cold drawn to form the textile fiber Dacron polyester, the outstanding features of which are its stiffness (about four times that of nylon 66), very high strength, and remarkable resistance to creasing and wrinkling. Because the early Dacron polyester fibers were harsh to the touch, due to... 

A garment manufacturer, Griffin Manufacturing Co., Fall River, Massachusetts, a partner in this research project, produces a jogging bra which is constructed of two layers of knitted fabric. The blue outer fabric contains 43% cotton, 43% polyester and 14% Lycra spandex. The white inner lining contains 90% CoolMax and 10% Lycra spandex. CoolMax is a DuPont trademark for fabric containing DuPont tetra-channel Dacron polyester fiber. - All these materials are characterized in another section of this report. 

Ex. 1. Vulcanized neoprene and SBR can be adhered strongly to nylon and Dacron polyester fiber fabric by means of the following aqueous adhesive system ... 

Research on polyaramides began at DuPont after 1950, and a first patent appeared in 1958 [24]. The hrst technical product was the m-polyaramide , which was commercialized as a fiber in 1967 under the name Nomex . Due to a Tm of 290-295 °C, combined with high thermostability, Nomex allows for faster sewing and weaving than Nylon-6,6, and it has a higher form stability. Particular important for most applications is its low flammability (see below) Mainly responsible for this success was Wilfred Sweeney (1926-2011), who earned in 2002 the Lavoisier Medal for his life work as researcher [25, 26]. Sweeney had worked at DuPont for 38 years, and he had also contributed to the development of the Dacron polyester fiber. The Lavoisier medal is the highest honor of science excellence awarded by DuPont. 

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