Search results
Results from the WOW.Com Content Network
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
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 , [ 5 ] R-12 , [ 6 ] R-123 [ 5 ] and R-502 [ 7 ] dominated the market.
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.
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
Chlorodifluoromethane or difluoromonochloromethane is a hydrochlorofluorocarbon (HCFC). This colorless gas is better known as HCFC-22, or R-22, or CHClF 2.It was commonly used as a propellant and refrigerant.
DuPont filed its initial Form 10 with the SEC in December 2014 and announced that the new company would be called "The Chemours Company." [ 8 ] 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.
Behring Diagnostics, a Frankfurt-based [1] company bearing Dr. Emil von Behring's name, was spun off from Hoechst AG (which later became Aventis) in 1995.Soon after its formation, the company acquired a drug-testing firm called Syva Company and, in 1996, the diagnostics and clinical chemistry division of DuPont.