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 Date: 2012-06-05 16:39:32Greenhouse gases Refrigerants Halogenated solvents Chlorofluorocarbon Ozone layer Blowing agent Fluorine Foaming agent Montreal Protocol Chemistry Ozone depletion Heating ventilating and air conditioning |
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CFCS, HCFCS, AND HYDROCARBON BLOWING AGENTS There are increasing concerns and tighter specifications regarding blowing agents and the effect they have on the atmosphere. Chlorofluorocarbon blowing agents have been found