Patent ID: 8859099
Filing Date: 2014-10-14
Classification: C01B,C01G,C08J,C08K,C08L,C09D,C09J,Y10T

Abstract:
1. An organosiloxane resin composition comprising: (E) colloidal silica, (F) a hydrolysis condensate of an alkoxysilane represented by the following formula (F): wherein R 1 and R 2 are each independently an alkyl group having 1 to 4 carbon atoms, R 3 is an alkyl group having 1 to 4 carbon atoms, and m and n are each independently an integer of 0, 1 or 2, and (m+n) is an integer of 0, 1 or 2; and (G) at least one metal oxide selected from the group consisting of titanium oxide, zinc oxide and cerium oxide, all of which are dissolved and/or dispersed in a solvent, wherein (i) a content of the component (E) is 10 to 60 wt % and a content of the component (F) is 40 to 90 wt % based on 100 wt % of a total of the components (E) and (F) when a weight of the component (F) is a weight in terms of R (ii) when a cumulative 50% particle diameter and cumulative 90% particle diameter in a laser diffraction particle size distribution measurement of the component (G) are represented by D50 and D90, respectively, D90 is 100 nm or less and D90/D50 is 20 or less, and (iii) wherein the component (G) is obtained by dispersing a slurry containing the metal oxide dispersed in water or an organic solvent with a medium mill filled with a medium having an average particle diameter of 100 μm or less.