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Wallace Hume Carothers (/ k ə ˈ r ʌ ð ər z /; April 27, 1896 – April 29, 1937) was an American chemist, inventor, and the leader of organic chemistry at DuPont, who was credited with the invention of nylon. [1] Carothers was a group leader at the DuPont Experimental Station laboratory, near Wilmington, Delaware, where most polymer ...
Nylon 12. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Nylon 12 is a nylon polymer with the formula [ (CH 2) 11 C (O)NH] n. It is made from ω-aminolauric acid or laurolactam monomers that each have 12 carbons, hence the name ‘Nylon 12’. It is one of several nylon polymers.
Originally gifted to the then ruler King Moshoeshoe I by a British man known only as "Mr Howell" in the late 19th century, [2] these blankets quickly gained popularity in the Lesotho region. The way that Basotho men wear these traditional blankets is based on the traditional Kaross, an animal skin cloak although their transformation to "factory ...
Flock worker's lung is an occupational lung disease caused by exposure to flock, small fibers that are glued to a backing in order to create a specific texture. People who work in flocking are at risk of inhaling small pieces of the flock fibers, which causes interstitial lung disease. [1] The disease was initially described in 1998, when a ...
Victoria Martens was born on August 23, 2006, in Albuquerque, New Mexico. [8] [9] She was a student at Petroglyph Elementary School in Albuquerque. [4]Her mother, Michelle Martens, did not have a criminal record in New Mexico, [4] [10] [11] but later told investigators she would seek men online to engage in sexual acts with her two children, including Victoria, while she allegedly watched for ...
Water tubers in the Lehigh River in Pennsylvania, June 2020. Tubing, also known as inner tubing, bumper tubing, towed tubing, biscuiting (in New Zealand ), or kite tubing, is a recreational activity where an individual rides on top of an inner tube, either on water, snow, or through the air. The tubes themselves are also known as "donuts" or ...
As seen in the table below, Nylon 11 has lower values of density, flexural and Young's modulus, water absorption, as well as melting and glass transition temperatures. Nylon 11 is seen to have increased dimensional stability in the presence of moisture due to its low concentration of amides. Nylon 11 experiences 0.2-0.5% length variation and 1. ...
Victoria's Secret is an American lingerie, clothing, and beauty retailer. Founded in 1977 by Roy and Gaye Raymond, [6] [7] the company's five lingerie stores were sold to Les Wexner in 1982. [8] Wexner rapidly expanded into American shopping malls, growing the company into 350 stores nationally with sales of $1 billion by the early 1990s, when ...