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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.
This table shows the biggest manufacturers of cable in terms of revenue. The revenues noted here are total revenue of the group as reported in financial statements. These may not represent the revenues from their cable business.
Chlorofluorocarbons (CFCs): when derived from methane and ethane these compounds have the formulae CCl m F 4−m and C 2 Cl m F 6−m, where m is nonzero. Hydro-chlorofluorocarbons (HCFCs): when derived from methane and ethane these compounds have the formula CCl m F n H 4−m−n and C 2 Cl x F y H 6−x−y, where m, n, x, and y are nonzero.
Freon was used as the original brand name for electronic gases produced and marketed by DuPont. With the depletion of the ozone layer and the subsequent phase-out of chlorofluorocarbon (CFC) gas compounds, the company rebranded this product line to differentiate from refrigerant gases that had been using the same Freon brand name.
DuPont may refer to the current incarnation of the DuPont company and its products, the predecessor company, or its founding family. Subcategories This category has the following 4 subcategories, out of 4 total.
These include chlorofluorocarbons and hydrofluorocarbons, both of which cause ozone depletion (although the latter much less so) and contribute to global warming. 'Freon' is the brand name for the refrigerants R-12, R-13B1, R-22, R-410A, R-502, and R-503 manufactured by The Chemours Company, and so is not used to label all refrigerants of this type
Making organic fluorides is the main use for hydrofluoric acid, consuming over 40% of it (over 20% of all mined fluorite). Within organofluorides, refrigerant gases are still the dominant segment, consuming about 80% of HF. Even though chlorofluorocarbons are widely banned, the replacement refrigerants are often other fluorinated molecules.
ETFE is commonly used in the nuclear industry for tie or cable wraps and in the aviation and aerospace industries for wire coatings. This is because ETFE has better mechanical toughness than PTFE . In addition, ETFE exhibits a high-energy radiation resistance and can withstand moderately high temperatures for a long period.