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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]
By the 1990s the design had made its way to most of the Western world, and thong underwear became popular. Today, the thong is one of the fastest-selling styles of underwear among women, and is also worn by men. The 1990s saw the introduction of boxer briefs, which take the longer shape of boxer shorts but maintain the tightness of briefs.
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 ...
A type of athletic shirt made of spandex and nylon or polyester, used to protect against rashes from abrasion (like wax-based chafing from sliding on and off of a surf board) or sun exposure. Rash guards may be worn as an alternative to wetsuits during warmer weather. They may also offer UV protection. Sling swimsuit.
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 ...
1842 – John Greenough patents the first sewing machine in the United States. 1844 – John Smith of Salford granted a patent for a shuttleless rapier loom. [citation needed] 1846 – John Livesey adapts John Heathcoat's bobbinet machine into the curtain machine. 1847 – William Mason Patents his "Mason self-acting" Mule.
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 ...