Organosilicone fine particles of tetrahedral general shapes, method of production thereof and cosmetic materials, resin compositions and paint compositions containing same

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 SiO2 in an amount of 30-50 molar %, siloxane units R1SiO1.5 in an amount of 45-65 molar % and siloxane units R2R3SiO in an amount of 3-9 molar % so as to be a total of 100 molar %, wherein R1, R2 and R3 are each alkyl group with 1-4 carbon atoms or phenyl group.