All that never need CFC at all. F.e. spray cans now perfectly use propane as propellant, instead of CFC, just like before freon madness. I'm not very into styrofoam technologies, but in USSR styrofoam factories used CO2 for foaming. It was also a way to lower styrofoam flammability.

There are still a lot of CFC produced, because, f.e. you can't just fill car AC with propane-butane mix. I mean you can do it, and it will work perfectly, my car AC filled with 70/30 propane/isobutane mix for a long time, but it is not allowed by vendor. You can use propane/butane mix instead of R12 or R134 refrigerants without any modifications of AC, just check the propane/butane ratio you need to mimic original refrigerant curve, you could even fine tune your AC varying propane/butane ratio but no car service will ever do it for you.

Nearly any common CFC refrigerant could be emulated using propane/isobutane mix. There never was a need for using CFCs as refrigerants at all. The same is with other CFC uses.

All that never need CFC at all. F.e. spray cans now perfectly use propane as propellant, instead of CFC, just like before freon madness. I'm not very into styrofoam technologies, but in USSR styrofoam factories used CO2 for foaming. It was also a way to lower styrofoam flammability.

There are still a lot of CFC produced, because, f.e. you can't just fill car AC with propane-butane mix. I mean you can do it, and it will work perfectly, my car AC filled with 70/30 propane/isobutane mix for a long time, but it is not allowed by vendor. You can use propane/butane mix instead of R12 or R134 refrigerants without any modifications of AC, just check the propane/butane ratio you need to mimic original refrigerant curve, you could even fine tune your AC varying propane/butane ratio but no car service will ever do it for you.