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Barbara Haviland Minor is an American chemical engineer, known for the development of refrigerants.She was technical leader for chemical company DuPont in the development of R-1234yf, [1] a refrigerant which, as of 2018, was used in 50% of all new vehicles produced by original equipment manufacturers, [2] and which represented an important contribution to countering global warming.
The table is sortable by each of the following refrigerant properties (scroll right or reduce magnification to view more properties): Type/prefix (see legends); ASHRAE number
DuPont de Nemours, Inc., commonly shortened to DuPont, is an American multinational chemical company first formed in 1802 by French-American chemist and industrialist Éleuthère Irénée du Pont de Nemours. The company played a major role in the development of the U.S. state of Delaware and first arose as a major supplier of gunpowder.
The name is a trademark name owned by DuPont (now Chemours) for any chlorofluorocarbon (CFC), hydrochlorofluorocarbon (HCFC), or hydrofluorocarbon (HFC) refrigerant. Following the discovery of better synthesis methods, CFCs such as R-11 , [ 7 ] R-12 , [ 8 ] R-123 [ 7 ] and R-502 [ 9 ] dominated the market.
DuPont filed its initial Form 10 with the SEC in December 2014 and announced that the new company would be called "The Chemours Company." [ 7 ] The name is a portmanteau of the words chemical and Nemours, a nod to DuPont's full name, E. I. du Pont de Nemours & Co.
Dark Waters is a 2019 American legal thriller film directed by Todd Haynes and written by Mario Correa and Matthew Michael Carnahan.The story dramatizes Robert Bilott's case against the chemical manufacturing corporation DuPont after they contaminated a town with unregulated chemicals.
Following the December 11, 2015 announcement that it would merge with DuPont, Dow also announced on the same day that it had reached a deal to acquire Corning's stake in Dow Corning in exchange for $4.8 billion in cash and Corning gaining a roughly 40% stake in Hemlock Semiconductor Corporation. Dow Chemical assumed full ownership of Dow ...
Five modern technetium-99m generators The first technetium-99m generator, unshielded, 1958. A Tc-99m pertechnetate solution is being eluted from Mo-99 molybdate bound to a chromatographic substrate