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John Paul Hogan (August 7, 1919 [1] – February 19, 2012) [2] [3] was an American research chemist. Along with Robert Banks, he discovered methods of producing polypropylene and high-density polyethylene.
The first industrially practical polyethylene synthesis discovered by Eric Fawcett and Reginald Gibson at the Imperial Chemical Industries (ICI) works in Northwich, England. [10] 1935 Nylon is invented and patented by DuPont [6] 1938: Nylon is first used for bristles in toothbrushes. It features at the 1939 worlds fair and is famously used in ...
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
Swim fins, also known as fins, or flippers, are blade-shaped extensions worn on feet or hands for use in water. They aid movement in aquatic sports such as swimming, surfing, and underwater diving. Swim fins are typically made of rubber or plastic. Benjamin Franklin invented wooden swim fins in 1717. [10]
Nathaniel C. Wyeth (October 24, 1911 – July 4, 1990) was an American mechanical engineer and inventor.He is best known for creating a variant of polyethylene terephthalate that could withstand the pressure of carbonated liquids.
They began working together in 1946, and in 1951 invented "crystalline polypropylene" and high-density polyethylene (HDPE). These plastics were initially known by the name Marlex . The polymerization of ethylene was made possible by their discovery of the so-called Phillips catalyst .
Earl Silas Tupper (July 28, 1907 – October 3, 1983) was an American businessman and inventor, best known as the inventor of Tupperware, an airtight plastic container for storing food, and for founding the related home products company that bears his name, Tupperware Plastics Company.
LDPE has SPI resin ID code 4 Schematic of LDPE branching structure. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.It was the first grade of polyethylene, produced in 1933 by John C. Swallow and M.W Perrin who were working for Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. [1]