| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new urethane (meth)acrylate having a fluorene skeleton excellent in hardness, heat resistance, etc. <P>SOLUTION: The urethane (meth)acrylate is obtained by using, as reaction constituents: a compound having at least three hydroxy groups and a specific fluorene skeleton, for example, 9,9-bis[3,4-di(2-hydroxyethoxy)phenyl]fluorene, 9,9-bis[3,4,5-tri(2-hydroxyethoxy)phenyl]fluorene, etc.; a polyisocyanate compound, for example, a diisocyanate, a urethane prepolymer having isocyanate groups on both terminals obtained by reacting a polymer diol compound with a diisocyanate, etc.; and a (meth)acrylic compound having a reactive group to the isocyanate group, for example, a hydroxyalkyl (meth)acrylate, etc. <P>COPYRIGHT: (C)2013,JPO&INPIT |
