Patent ID: 9617657
Date: 2017-04-11
CPC Classifications: B82Y,C07F,C30B,H01B,H01L,Y10S

Claim:
1. A zirconia nanocrystal dispersion comprising a dispersion solvent, said dispersion having a minimum transmittance of larger than 20% when measured in a cuvette with a 10 mm path length in the wavelength region from 400 nm to 750nm when the dispersion contains 10% by weight nanocrystals in the dispersion solvent, wherein said dispersion solvent is not water, said zirconia nanocrystals of the dispersion comprising at least one capping agent, and wherein the dispersion has a free capping agent concentration below 8,000micrograms/ml as measured by GC, said at least one capping agent being n-propyltrimethoxysilane, n-propyltriethoxysilane, n-octyltrimethoxysilane, n-octyltriethoxysilane, phenyltrimethoxysilane, 2-[methoxy(polyethyleneoxy)propy]-trimethoxvsilane, methoxvtri(ethyleneoxv)propyltrimethoxysilane, 3-aminopropvItrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-(methacryloyloxy)propyl trimethoxysilane, 3-isocyanatopropyltriethoxysilane, 3-isocyanatopropyltrimethoxysilane, glycidoxypropyltrimethoxysilane, heptanol, hexanol, octanol, phenol, ethanol, propanol, butanol, oleyl alcohol, dodecyl alcohol, octadecanol, triethylene glycol monomethyl ether, acetic acid, propionic acid, 2-[2-(2-methoxyethoxy) ethoxy] acetic acid, benzoic acid or isomers.