| 摘要 |
The present invention relates to A composition comprising: a) 20-60 wt% of metaloxide nanopartlcles grafted with a silane component Z, b) 40-80 wt% water, c) less than 1 wt% of an organic solvent, d) less than 0, 1 wt% of a surfactant, wherein at least one metaloxide is selected from the group consisting of Al2O3, Fe2O3, Fe3O4, In2O3, SnO2, ZnO; oxides of Ti, Zr, Hf, Nb, Ta, Cr, Mo, W; mixed metal oxides AI/Sn:ZnO, Sb/Zn:SnO2, Sn:ln2O3 and doped tinoxides; and wherein Z is a component according to the formula Y-O-Cn-Si-(OR)3,wherein Y is H, an hydroxy functional C1-C20 hydrocarbylgroup, or an epoxy functional C1-C20 hydrocarbyl group, Cn is a hydrocarbyl bridging group comprising between 1 and 10 C atoms and each R independently is hydrogen or a C1-C10 hydrocarbyl group. The invention also relates to a method for preparing such compositions and latices comprising such a composition. |
