Baekjin Kim1 Semi Han1

1, KITECH, Cheonan, , Korea (the Republic of)

As increasing of Greenhouse gas (GHG) emission, global warming has been accelerated in the world. In order to reduce the emission of carbon dioxide (CO2), many researchers make an effort on development of new technology. Our group has been interested in UV curable coating materials using biomass derived isosorbide and its derivative due to lower birefringence, highly UV resistance and transparency etc. In this research, we synthesized eco-friendly urethane acrylate (UA) using isosorbide and other acrylate monomers. Urethane acrylate were polymerized isosobide methacrylate and poly(tetramethylene ether) glycol (PTMG) using two kinds of isocyanate of 4,4′-Methylenebis(cyclohexyl isocyanate (H12MDI) and Isophorone diisocyanate (IPDI) which are non-yellowing type chemicals. It were found that the molecular weight average (Mw) for PUA has a range of 2,000~6,000 g/mol and PDI of 2.1~2.2 via Gel permeation chromatography (GPC). We will investigate curing kinetics of isosobide methacrylate and their mixture and apply to 3 dimensional structure of combination rear lamp for automotive using DLP-SLA 3D printing technology.