The 2 pack I've used is polyurethane - great stuff BUT YOU MUST WEAR APPROPRIATE PPE WHEN SPRAYING otherwise you will be really quite ill for a long time. I can't recall the manufacturer of it (was a few years ago), but seem to remember that it came from Germany. I've never used the epoxy myself, but a friend did and said it gave a very durable finish. Some quick googling turned up this stuff which seems pretty reasonable: https://www.taindustrialpaints.co.uk...pular-colours/
I've found drying at elevated temp. helps with pretty well all air dry paint types whether it's enamel out of a tin from the local paint dealer or even stuff in an aerosol: I don't think it's by chance that a lot of industrial finishes are referred to as "stoving enamel". Mind you the weather is generally cold and damp up here, not the best conditions for drying stuff.