For 10 points, name these chemicals found in refrigerator coolant, air conditioners, and in plastic foams and aerosols that are responsible for 80% of ozone depletion.
They were first developed in the 1930s as an alternative to Sulfur dioxide, and became popular because they are generally non-flammable, non-toxic, and non-reactive. Inhalation of them will affect the nervous system and may lead to sudden death, a method by which many teenagers committed suicide. In 1987 the Montreal Protocol was signed in an effort to reduce the production of these substances, and the 1997 Kyoto Protocol identified their replacement as one of the leading greenhouse gasses. DuPont has trademarked the name Freon which contains these types of materials. For 10 points, name these chemicals found in refrigerator coolant, air conditioners, and in plastic foams and aerosols that are responsible for 80% of ozone depletion. 
They were first developed in the 1930s as an alternative to Sulfur dioxide, and became popular because they are generally non-flammable, non-toxic, and non-reactive.
{ChloroFluoroCarbons} [accept {CFC}]