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Highly Weather Resistant Radiation Curable Monomers and Oligomers for Exterior Applications

Presented by William R. Schaeffer

                                                                                                                                                 
American Coatings Conference
Charlotte Convention Center
Charlotte, North Carolina, U.S.A.

Wednesday, April 14, 2010
10:00 AM - 10:30 AM
Session 16:  Automotive Coatings
                                                                  

Abstract

The weathering resistance of an exterior coating is one of the main properties required by the end-user. To achieve this goal, careful selection of raw materials that comprise the final composition is critical. The backbone structures of several monomers and oligomers have been investigated, subjected to accelerated outdoor weathering testing (Q-TRAC), and correlated with actual Florida exposure. The results were also correlated with data attained from accelerated laboratory testing. The performance of these products has also been compared to a standard 2-component urethane intended for automotive topcoat applications. The physical properties along with yellowing resistance and gloss retention data of the monomers and oligomers will be presented. This ongoing study has shown that these acrylates, which are free from hindered amine light stabilizers (HALS) and light absorbers, can withstand greater than 3 years of Florida exposure without degradation. These tests are ongoing and will continue for at least 5 years. Since the testing was conducted in accordance with automotive test standards, these materials are suitable for any application requiring superior outdoor durability.




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