Journal
PROGRESS IN ORGANIC COATINGS
Volume 55, Issue 2, Pages 194-200Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.porgcoat.2005.09.015
Keywords
polyurethane dispersion; UV-curing; glycidol; high elongation; tack free
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UV curable polyurethane dispersions (UV-PUDs) having different prepolymer chain length, different types of capping agent (2.3-epoxy-1-propanol (glycidol) and 2-hydroxyethylacrylate (HEA)) and ionic center have been synthesized. Films based on polyurethane prepolymer were tack free prior to cure and showed high elongation at break over 200% as well as high hardness and modulus, especially when the terminal isocyanate groups were capped with glycidol. (c) 2005 Published by Elsevier B.V.
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