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Synthesis of UV-Curable Six-Functional Urethane Acrylates Using Pentaerytritol Triacrylate and Their Cured Film Properties  

Moon, Byoung-Joon (Department of Polymer Science and Engineering and Center for Photofunctional Energy Materials, Dankook University)
Hwang, Seok-Ho (Department of Polymer Science and Engineering and Center for Photofunctional Energy Materials, Dankook University)
Publication Information
Polymer(Korea) / v.35, no.2, 2011 , pp. 183-188 More about this Journal
Abstract
Pentaerytritol triacrylate (PETA) was synthesized by a condensation reaction between pentaerytritol and acrylic acid. The highest yield of PETA was obtained when heptane was used as a solvent under the 1:4 mole ratio of pentaerytritol and acrylic acid. The 6-functional urethane acrylates(UA) were also synthesized by a condensation reaction between PETA and diisocyanate. Cured films were prepared from the mixtures of UA oligomer, reactive diluents and UV initiator to investigate their physical properties. The thermal stability of the aliphatic urethane acrylate was better than that of the aromatic urethane acrylate. The UA-2 showed good hardness and scratch resistance properties while the UA-l with a high degree of curing density exhibited a better chemical resistance. All the UA oligomers showed fairly good adhesion strengths but the other physical properties of UA-3 were poor due to its low curing density.
Keywords
pentaerytritol; pentaerytritol triacrylate; diisocyanate; urethane acrylate; UV-curing; cured film properties;
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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