Incorporation of unsaturated fatty acids into waterborne UV-curing resins
The project’s main goal was to develop an understanding of how to gain a higher deep cure of UV-curable waterborne polyurethane dispersions for pigmented systems. Specifically, the project studied and concluded that radicals from oxidation of 1.3-4 wt-% of unsaturated fatty acids in the dry film can initiate radical polymerisation of acrylate groups. Polyester polyols containing 0, 5, 10 and 15 wt