Abstract
New dialkyl peroxides having an aryl ketone chromophore were synthesized by the reaction of t-butyl hydroperoxide with isopropylbenzene derivatives. These peroxides had UV absorption bands above 300 nm. The free radicals produced during photolysis effectively initiated the polymerization of methyl methacrylate (MMA) and multifunctional acrylates at room temperature. Photopolymerization rates were as fast as those by the known t-butyl peresters having a benzophenone chromophore. When acrylate resins were photocured with the dialkyl peroxides, the resulting coating exhibited no yellow coloration. The storage stability of the dialkyl peroxides was superior to that of the peresters.
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Higuchi, Y., Suyama, S. Studies on Photopolymerization and Photocuring Initiated by Novel Dialkyl Peroxides Having Chromophore. Polym J 24, 1181–1188 (1992). https://doi.org/10.1295/polymj.24.1181
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DOI: https://doi.org/10.1295/polymj.24.1181