Oxygen feeds the polymerization inhibitor for all acrylic resins. Acrylate polymers (in raw chemical form without initiators present) are shipped with oxygen-consuming inhibitors already added.
Photopolymer initiators are just much more sensitive to blue lasers than non-laser light.
I generally find that I can get the surface to be non-tacky in about 5 minutes underwater in the Kudo3D UV curing chamber. In air, I find that it takes 30-60 minutes.