I "believe" POR-15 contains isocyanate. It's really nasty stuff. I have heard half a dozen horror stories about paints with isocycanate that have pretty much scared me away from ever using anything with it. I did a little research and almost all body shops use an external air source for breathing when spraying paint with iso in it. Do a quick search on the net and you'll see what I mean. Most auto paint suppliers can provide you with a safety sheet with the paint and it will advise you as to what kind of breathing apparatus is required.
