摘要:
Organosilicone fine particles which are capable of responding to the highly advanced requirements of recent years imposed on them for purposes of actual use, including further improvement in optical characteristics such as total light transmittance and haze as well as heat-resistant colorability related to resin compositions, further improvement in usability (extensions and expansions at the time of use) and feeling (stickiness, roughness and durability) related to cosmetic materials and further improvement in matte effect and factual sense related to paint compositions, as well as methods of their production and cosmetic materials, resin compositions and paint compositions containing such particles are provided. Organosilicone fine particles have tetrahedral general shapes with surfaces each having a concave part with an approximately circular opening. The maximum external diameters L of the organosilicone fine particles have an average value in the range of 0.5 - 20µm, the average value being taken from arbitrarily selected 20 of a scanning electron microscope photograph image of the organosilicone fine particles.
摘要:
Optical diffusive resin compositions are presented, capable of yielding optical diffusive moldings that are superior not only in rigidity and dimensional stability but also in heat resistance, optical transmissivity and optical diffusivity, as well as optical diffusive moldings molded by using them. Such optical diffusive resin compositions contain for 100 mass parts of a thermoplastic polymer material 0.1-10 mass parts of organosilicone fine particles of a specific kind comprising polysiloxane cross-linking structures, each particle having a hollow hemispherical shape as a whole, having a cross-sectional shape with an inner minor arc, an outer minor arc which covers it and ridge lines connecting their ends.
摘要:
Organosilicone fine particles which are capable of responding to the highly advanced requirements of recent years imposed on them for purposes of actual use, including further improvement in optical characteristics such as total light transmittance and haze as well as heat-resistant colorability related to resin compositions, further improvement in usability (extensions and expansions at the time of use) and feeling (stickiness, roughness and durability) related to cosmetic materials and further improvement in matte effect and factual sense related to paint compositions, as well as methods of their production and cosmetic materials, resin compositions and paint compositions containing such particles are provided. Organosilicone fine particles have tetrahedral general shapes with surfaces each having a concave part with an approximately circular opening. The maximum external diameters L of the organosilicone fine particles have an average value in the range of 0.5 - 20µm, the average value being taken from arbitrarily selected 20 of a scanning electron microscope photograph image of the organosilicone fine particles.
摘要:
Resin compositions with improved optical characteristics and cosmetic materials with improved feeling, soft focus and durability contain non-spherical hollow fine particles having a spindle shape as a whole with a major axis and a minor axis, a plurality of concave parts on the surface, a hollow part inside connected to the surface through a crack extending along the major axis, the average length of the major axes being 0.1-30µm and the ratio of the average length of the minor axes to the average length of the major axes being 0.3-0.8.
摘要:
Organosilicone fine particles of size in the range of 0.1 - 20µm, each having 20 or more faces with indefinite shapes and a network of convex parts that surround these faces with indefinite shapes on its surface, and being spherical as a whole respond to highly advanced requirements of recent years including improvements in optical characteristics of resin compounds, usability and feeling of cosmetics and maintainability of fluidity of development toners. The invention further provides methods of producing such organosilicone fine particles.
摘要:
Non-spherical fine particles capable of responding to highly advanced requirements of recent years, including further improvements in optical characteristics such as total light transmittance and optical diffusible property related to resin molded products and further improvements in feeling, soft focus, coverage and durability related to cosmetic products, as well as methods of their production and their use are provided. These non-spherical fine particles each have a polyhedral general shape with six or more surfaces each of which is formed as a concave surface, satisfying all of the conditions that the average value of the maximum external diameters L 1 of the non-spherical fine particles is in the range of 0.1 - 20µm, that the ratios between the minimum external diameters L 2 and the maximum external diameters L 1 of the individual non-spherical fine particles have an average value in the range of 0.60 - 0.97, and that they have an average number per particle of 6 - 14 concave surfaces of which the ratio of the maximum diameter m 1 with respect to the maximum external diameter L 1 is in the range of 0.20 - 0.90,