spandex chemical formula

The name "spandex" is an anagram of the word "expands". Spandex, Lycra or elastane is a synthetic fiber known for its exceptional elasticity.It is a polyether-polyurea copolymer that was invented in 1958 by chemist Joseph Shivers at DuPont's Benger Laboratory in Waynesboro, Virginia.. The Chemistry of Stress. Mazharul Islam Kiron is a textile consultant, entrepreneur, blogger and researcher on online business promotion. Five DuPont employees, all from DuPont's Lycra spandex plant in Mercedes, Argentina, tried to play a fast-and-loose game. The operation went awry, but the Swiss police ended up nabbing the extortionists on the rebound in a Geneva parking lot. Does Jerry Seinfeld have Parkinson's disease? Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE. Ano ang Imahinasyong guhit na naghahati sa daigdig sa magkaibang araw? It's really no stretch to say that spandex fiber has had a remarkable effect on the clothing we all wear.

Items made of spandex can be machine washed and dried at moderate temperatures. This process causes the liquid polymer to chemically react and form solid strands. Each fiber of spandex is made up of many smaller individual fibers that adhere to one another due to the natural stickiness of their surface. groups in the abbreviated structure of Spandex. Kevlar 29, monomer-based. For each of the atoms in the abbreviated Spandex structure, state its 1,4-Benzenedicarboxylic acid, polymer with 1,4-benzenediamine Foamed polyurethanes result from the reaction of diisocyanates with organic compounds, usually polyesters, containing carboxyl groups; these reactions liberate bubbles of carbon dioxide that remain dispersed throughout the product. When first introduced it revolutionized many areas of the clothing industry. It is light in weight and cool; it is resistant to deterioration from body acids; and it is easily laundered and quick-drying. Kirkwood says consumers can soon expect to see more Lycra spandex incorporated into natural and man-made leather shoes for greater comfort. While glam metal bands were getting into the spandex craze, so were many glam-oriented Country stars, especially women like Dolly Parton, Margo Smith, and Dottie West. Registrieren Sie sich jetzt und geben Sie Ihre Kundennummer an. Ihre Kundennummer finden Sie auf unseren Rechnungen. Step 3: The spinning solution is pumped into a cylindrical spinning cell where it is cured and converted into fibers.

The two liquid precursors of a polyurethane are a multifunctional isocyanate and a prepolymer, a low-molecular-weight polyether or polyester bearing a multiplicity of….

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