Patent ID: 8029761
Filing Date: 2011-10-04
Classification: B82Y,C01P,C09C

Abstract:
1. Surface-treated metal oxide particles comprising metal oxide particles selected from the group consisting of aluminum oxide particles and titanium oxide particles, surface-treated with an organic silicon compound such that chemical groups containing silicon atoms are attached to the surface of the metal oxide particles, wherein the chemical groups containing silicon atoms generate resonance signals with chemical shifts in a CP/MAS wherein the chemical shifts are measured in ppm relative to tetramethylsilane standard, wherein resonance signals with chemical shifts in the range from −4 ppm to −33 ppm in the CP/MAS wherein resonance signals with chemical shifts in the range from −33 ppm to −76 ppm in the CP/MAS wherein resonance signals with chemical shifts in the range from −76 ppm to −130 ppm in the CP/MAS wherein the surface-treated metal oxide particles have (1) a ratio D:T of the integrated area of the resonance signals with chemical shifts in the range from −4 ppm to −33 ppm to the integrated area of the resonance signals with chemical shifts in the range from −33 ppm to −76 ppm between 0.10 to 2.50, and (2) a ratio Q:T of the integrated area of the resonance signals with chemical shifts in the range from −76 ppm to −130 ppm to the integrated area of the resonance signals with chemical shifts in the range from −33 ppm to −76 ppm between 0.10 to 2.50 in the CP/MAS