Patent ID: 8524363
Filing Date: 2013-09-03
Classification: A61K,A61Q,C08L,C09D,Y10T

Abstract:
1. Organosilicone fine particles with tetrahedral general shapes having surfaces each comprising a concave part with an approximately circular opening, wherein the maximum external diameters L of the organosilicone fine particles have an average value in the range of 0.5-20 μm, the average value of the maximum external diameters L being taken from arbitrarily selected 20 of a scanning electron microscope photograph image of said organosilicone fine particles; wherein the ratio m/L of the maximum diameter m of the concave part with respect to the maximum external diameter L has an average value in the range of 0.3-0.8 taken from arbitrarily selected 20 of a scanning electron microscope photograph image of said organosilicone fine particles; wherein oil absorption of said organosilicone fine particles is 50-150 ml/100 g; and wherein said organosilicone fine particles comprise siloxane units forming a polysiloxane cross-link structure including siloxane units SiO