| 摘要 |
<p>A phosphor-containing addition-curable silicone resin composition is provided. The composition is capable of forming a cured product which exhibits excellent crack resistance and shock resistance, and minimal surface tackiness. The composition includes (A) an organopolysiloxane including R 1 SiO 1.5 units (T units), R 2 2 SiO units (D units), and R 3 a R 4 b SiO (4-a-b)/2 units (wherein, R 1 , R 2 and R 3 represent a methyl group or the like, R 4 represents a vinyl group or allyl group, a represents an integer from 0 to 2, b represents 1 or 2, and a+b is either 2 or 3), in which the number of repetitions of the D units is within a range from 5 to 300; (B) an Si-H-containing polysiloxane including T units, D units, and R 3 c H d SiO (4-c-d)/2 units (wherein, c represents an integer from 0 to 2, d represents 1 or 2, and c+d is either 2 or 3), in which the number of repetitions of the D units is within a range from 5 to 300, in sufficient quantity that the molar ratio of Si-bonded hydrogen atoms within (B), relative to vinyl groups or allyl groups within (A), is within a range from 0.1 to 4.0; (C) a catalyst; and (D) a phosphor.</p> |
