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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 . [ 1 ] [ 2 ] [ 3 ]
Joseph Shivers. Joseph Clois Shivers Jr. (November 29, 1920 – September 1, 2014) was an American textile chemist who was based in West Chester, Pennsylvania, best known for his role in the structural development of Spandex, a thermoplastic elastomer, in the 1950s, while employed at DuPont. [1]
This is an accepted version of this page This is the latest accepted revision, reviewed on 12 October 2024. Clothes worn under other clothes For other uses, see Underwear (disambiguation). "Intimate apparel" redirects here. For the play, see Intimate Apparel (play). Boxer shorts and boxer briefs Panties or knickers Underwear, underclothing, or undergarments are items of clothing worn beneath ...
Panties are women's underpants. Panties are form-fitting. Typical components include an elastic waistband, a crotch panel to cover the genitalia (usually lined with absorbent material such as cotton), and a pair of leg openings that, like the waistband, are often made of elastomer. Various materials are used, but are usually chosen to be ...
Stephanie Louise Kwolek (/ ˈkwoʊlɛk /; July 31, 1923 – June 18, 2014) was a Polish-American chemist best known for inventing Kevlar (poly-paraphenylene terephthalamide). Her career at the DuPont company spanned more than 40 years. [ 1 ][ 2 ] For her discovery, Kwolek was awarded the DuPont company's Lavoisier Medal for outstanding ...
The British English term, short trousers, is used, only for shorts that are a short version of ordinary trousers (i.e., pants or slacks in American English). For example: tailored shorts, often lined, as typically worn as part of a school uniform for boys up to their early teens, [1] [2] [3] and by servicemen and policemen in tropical climates.
This is an accepted version of this page This is the latest accepted revision, reviewed on 15 October 2024. U.S. state This article is about the U.S. state. For other uses, see Pennsylvania (disambiguation). "Penn." redirects here. For other uses, see Penn. State in the United States Pennsylvania Pennsilfaani (Pennsylvania Dutch) State Commonwealth of Pennsylvania Flag Seal Nicknames: Keystone ...
Polyurea is a type of elastomer that is derived from the reaction product of an isocyanate component and an amine component. The isocyanate can be aromatic or aliphatic in nature. It can be monomer, polymer, or any variant reaction of isocyanates, quasi-prepolymer or a prepolymer. The prepolymer, or quasi-prepolymer, can be made of an amine ...