| 摘要 |
PROBLEM TO BE SOLVED: To provide a new urethane (meth)acrylate with fluorene skeleton having excellent hardness and heat resistance or the like. SOLUTION: The urethane (meth)acrylate is prepared by reacting a compound having at least three hydroxyl groups and a specific fluorene skeleton äfor example, 9,9-bis[3,4-di(2-hydroxyethoxy)phenyl]fluorene, or 9,9-bis[3,4,5-tri(2-hydroxyethoxy)phenyl]fluorene, etc.} with a polyisocyanate compound (for example, diisocyanate, an urethane prepolymer having isocyanate groups on both terminals obtained by reacting a polymer diol compound with the diisocyanate, etc.) and a (meth)acrylic compound having a reactive group to the isocyanate group (for example, a hydroxyalkyl (meth)acrylate, etc.). COPYRIGHT: (C)2008,JPO&INPIT
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