Patent ID: 8722094

Claim:
A solid dispersion comprising: an active ingredient having a solubility in water at 25° C. of not more than 1 mg/mL, and a powdery porous carrier impregnated with and supporting the active ingredient, wherein the powdery porous carrier comprises a first porous silicon-containing carrier having a heating loss of not more than 2.5% by weight at a temperature of 950° C. for 2 hours, wherein the first porous silicon-containing carrier has a mean pore size of 15 to 20 nm, an oil absorption of 230 to 320 ml/100 g, a mean particle size of 3 to 15 μm, and a specific surface area of 400 to 600 m 2 /g, and wherein the first porous silicon-containing carrier satisfies at least one of the following intensity ratios in an infrared absorption spectrum: (1-2) intensity ratio (I 2 /I 0 ): 11 to 17; (1-3) intensity ratio (I 3 /I 0 ): 20 to 40; (1-4) intensity ratio (I 4 /I 0 ): 35 to 73; (1-5) intensity ratio (I 5 /I 0 ): 40 to 110; (1-6) intensity ratio (I 6 /I 0 ): 35 to 85; (1-7) intensity ratio (I 7 /I 0 ): 23 to 47; (1-8) intensity ratio (I 8 /I 0 ): 14 to 27; (2-2) intensity ratio (I 4 /I 1 ): 7.7 to 10.5; (2-3) intensity ratio (I 5 /I 1 ): 9.5 to 15; (2-4) intensity ratio (I 6 /I 1 ): 8 to 12; wherein I 0 is an absorption intensity at a wave number of 3800 cm −1 , I 1 is that of 3650 cm −1 , I 2 is that of 3600 cm −1 , I 3 is that of 3550 cm −1 , I 4 is that of 3500 cm −1 , I 5 is that of 3450 cm −1 , I 6 is that of 3400 cm −1 , I 7 is that of 3350 cm −1 , I 8 is that of 3300 cm −1 , I 9 is that of 3200 cm −1 , and I 10 is that of 3100 cm −1 , and wherein the powdery porous carrier further comprises a second porous silicon-containing carrier having a heating loss of not less than 4.5% by weight at a temperature of 950° C. for 2 hours.