| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot melt ultraviolet-crosslinkable transparent pressure-sensitive adhesive which enables the production of a laminate at a room temperature without requiring the high temperature/high pressure treatment by an autoclave and furthermore has excellent quality such as difficulty in causing plate slippage, a transparent pressure-sensitive adhesive sheet, and a laminate obtained by using them. <P>SOLUTION: The hot melt ultraviolet-crosslinkable transparent pressure-sensitive adhesive comprises a (meth)acrylic ester copolymer and 0.01-1.0 wt.%, based on the (meth)acrylic ester copolymer, of at least a hydrogen-withdrawing photoradical initiator of photoradical initiators. It is preferred that the (meth)acrylic ester copolymer has a melt viscosity at 130°C of 50,000-500,000 (mPa×s) and a Tg (glass transition temperature) of≤-20°C. The pressure-sensitive adhesive sheet is obtained by subjecting this adhesive to hot melt molding and then causing crosslinking by ultraviolet irradiation and has a shear adhesion at 40°C of a slippage length of 1.0-13 mm. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
