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DuPont began producing hydrofluorocarbons as alternatives to Freon in the 1980s. These included Suva refrigerants and Dymel propellants. [ 50 ] Natural refrigerants are climate friendly solutions that are enjoying increasing support from large companies and governments interested in reducing global warming emissions from refrigeration and air ...
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.
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.
The nonflammability and nontoxicity of the chlorofluorocarbons CCl 3 F and CCl 2 F 2 attracted industrial attention in the 1920s. General Motors settled on these CFCs as refrigerants and had DuPont produce them via Swarts' method. [39] In 1931, Bancroft and Wherty managed to solve fluorine's explosion problem by diluting it with inert nitrogen ...
Smart's comments in Chemical Reviews in 1996, “Scientific and commercial interests in fluorine chemistry burgeoned after 1980, largely fueled by the need to replace industrial chlorofluorocarbons and the rapidly growing practical opportunities for organofluorine compounds in crop protection, medicine and diverse materials applications ...
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
It is a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant. In compliance with the Montreal Protocol, its manufacture was banned in developed countries (non-article 5 countries) in 1996, and in developing countries (Article 5 countries) in 2010 out of concerns about its damaging effect on the ozone layer. [5]