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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.
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 ...
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 world's first fully synthetic plastic was Bakelite, invented in New ... 5–6.4 kWh/lb; and paper (from ... like plastic made from casein was developed in ...
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] Its manufacture employs the same method today.
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. [1]
By 1800, Matthias Koops (in London, England) further investigated the idea of using wood to make paper, and in 1801 he wrote and published a book titled Historical account of the substances which have been used to describe events, and to convey ideas, from the earliest date, to the invention of paper. [115]
4.1.7.2 Florida. 4.1.7.3 Maryland. 4.1.7 ... 8 + 1 ⁄ 2 inches long and made of paper, ... These projects each invented new ways to recycle used plastic products and ...