| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a near infrared ray-absorbable adhesive composition excellent in the durability of a near infrared ray absorbing ability and the transparency in a visible range. <P>SOLUTION: The near infrared ray-absorbable adhesive composition comprises: a diimonium salt (A1); a resin (B) having a calculated glass transition point of 0°C or lower; and a solvent (S2). The diimonium salt (A1) is mixed with a solvent (S1) at a ratio of 0.01 mass% of the diimonium salt based on the amount of the solvent to prepare a mixed solution. An ultrasonic wave is applied to the mixed solution for 30 minutes, the mixed solution is allowed to stand for one hour or longer, and subsequently a supernatant of the mixed solution is placed in a cell having an optical path length of 1 mm. The absorbance (X) of the supernatant measured on an ultraviolet and visible spectrophotometer at a wavelengthλmax ranging from 350 nm to 1,500 nm is 0.5 or less. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
