Painter & Furniture Refinishing
It's pretty much the same kind of thing from what I could find on my web searches. All the cautions looked the same and the same PPE is recommended for both BUT there is a lot less to find about isocyanurates as opposed to isocyanates.
Actually, something that surprised me, I found that ALL of the urethane products pose some serious health risks when sprayed. I had no idea until this thread went up and I started reading my way through various websites, data sheers and so on. I, myself, have sprayed many but I won't be spraying them going forward. Just as easy for me to brush on and rub if need be.