Oxygen inhibition is one of the major problems in photopolymerizable coatings. While dissolved oxygen is fastly consumed, diffusion from the top in thin coatings remains a challenging problem. While nitrogen inertization is frequently used, people always search for more efficient ways to circumvent this problem. An overview is given in a Chemical Review Publication [1]. The most promising concepts have been evaluated and compared with each other [3]. 

[1] S. Ligon, B. Husar, H. Wutzel, R. Holman, R. Liska: "Strategies to Reduce Oxygen Inhibition in Photoinduced Polymerization"; Chemical Reviews, 114 (2014), 1; S. 557 - 589.

[2] M. Höfer, N. Moszner, R. Liska: "Oxygen scavengers and sensitizers for reduced oxygen inhibition in radical photopolymerization"; Journal of Polymer Science Part A: Polymer Chemistry, 46 (2008), 20; S. 6916 - 6927.

[3] B. Husar, S. Ligon, H. Wutzel, H. Hoffmann, R. Liska: "The formulator´s guide to anti-oxygen inhibition additives"; Progress in Organic Coatings, 77 (2014), S. 1789 - 1798.