H
HX125
Are all 2k primers iso's? If all 2k primers contain iso's do you have to wear a respirator when sanding cured primer, and if not, Why not? If all 2k are not iso, how do you tell if it is?
Chris_Hamilton
Trying to be the best me, I can be
The iso's are mainly in the activator of urethane primers and clears. When it's dry it's basically inert.. Main time to worry about iso is actually when they are "free" when you are mixing primer or clear. If you are not using a urethane 2k primer you don't have to worry about isocyanates until you clear. Main hazard with iso's is a cumulative effect, much like lead. Spray in a well ventilated area with a respirator. Mix it with a respirator, and sand with a high quality 2 strap dust mask to protect your lungs from dust much like you would do with body filler.
B
Bob Hollinshead
None of the chemicals used in body repair are good for you-they all have harmful effects. Wear a proper particle mask when sanding and a proper paint mask when priming and painting-or a fresh air system. The only primers and paints with Iso's are urethanes, but anything with solvents is also bad for you.
H
HX125
Thanks for the replies guys. That was the information I was looking for. I don't need to use the fresh air system just to sand. I was using a Dupont epoxy primer that the computer claims is non iso. I was wondering how effective an epoxy it can be if it isn't iso. Everyone else's seem to be.
Jim C
Oldtimer
epoxies dont have iso in them. the iso is the catalyst for urethanes/polyurethanes only. not saying epoxy isnt bad for you just that it doesnt have iso in it. iso comes in different forms. it can be a solid or as a gas in the air BUT and please someone correct me if im wrong, in our industry iso is only found as a solid so when the overspray is gone so is the iso.
