COATING COMPOSITION CONTAINING UV CURABLE ISOCYANATE GROUP-CONTAINING URETHANE (METH)ACRYLATE AND HYDROXYL GROUP-CONTAINING URETHANE (METH)ACRYLATE

摘要

PROBLEM TO BE SOLVED: To provide a coating composition curable in several hours without being heated, occasionally without being exposed to UV for coating a heat- sensitive product or a product which can not be heated for an economical reason. SOLUTION: A coating composition contains (a) urethane (meth)acrylate having a (meth)acryloyl group and a free isocyanate group, (b) a urethane (meth) acrylate having a (meth)acryloyl group and a free hydroxyl group, (c) a UV initiator initiating a radical polymerization and if necessary (d) one or more compounds reactive with the isocyanate.