Let's say you hold the patent on a product that has NO COMPETITION- there is NOTHING else like it.
The market is worth BILLIONS per year.
And you patent is about to expire... What do you do?
You secretly spend millions get your OWN PRODUCT banned because it 'harms the ozone layer" and then market a similar product that is not nearly as good, and is much more caustic... and ONLY YOU HAVE THE PATENT.
For another 40 years you are protected.
Look for the effort to ban HFC's to be starting soon...
The asthma inhalers Albuterol, (Obama breath a lizers!!) have been replaced, and I dont find them as effective a rescue inhaler, they dont seem to propel the inhalant as far into the lungs