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    Zinc Oxide Nanoparticles
    10.
    发明申请
    Zinc Oxide Nanoparticles 审中-公开
    氧化锌纳米颗粒

    公开(公告)号：US20080248289A1

    公开(公告)日：2008-10-09

    申请号：US11997260

    申请日：2006-10-26

    申请人： Gerhard Jonschker ,  Matthias Koch

    发明人： Gerhard Jonschker ,  Matthias Koch

    IPC分类号： B32B5/16 ,  F21V9/06 ,  C08K7/00

    CPC分类号： C01G9/02 ,  B82Y30/00 ,  C01P2004/64 ,  C08K3/22 ,  C08K9/02 ,  C09C1/043 ,  Y10T428/256 ,  Y10T428/2993

    摘要： The invention relates to zinc oxide nanoparticles having an average particle size in the range from 3 to 50 nm, dispersed in an organic solvent, according to one or more of claims 1 to 6, characterised in that in a step a) one or more precursors of the nanoparticles are converted into the nanoparticles in an alcohol, in a step b) the growth of the nanoparticles is terminated by addition of at least one modifier, which is a precursor of silica, when the absorption edge in the UV/VIS spectrum of the reaction solution has reached the desired value, in a step c) the silica coating is modified by addition of at least one further surface modifier selected from the group consisting of organofunctional silanes, quaternary ammonium compounds, phosphonates, phosphonium and sulfonium compounds or mixtures thereof, and optionally, in step d), the alcohol from step a) is removed and replaced by another organic solvent, to isolated nanoparticles, and to the use thereof for UV protection in polymers.

    摘要翻译： 本发明涉及根据权利要求1至6中一项或多项的平均粒度在3-50nm范围内的氧化锌纳米颗粒，其分散在有机溶剂中，其特征在于在步骤a）中，一种或多种前体 的纳米颗粒在醇中转化成纳米颗粒，在步骤b）中，当紫外/可见光谱中的吸收边缘在UV / VIS光谱中时，通过加入至少一种作为二氧化硅前体的改性剂来终止纳米颗粒的生长 在步骤c）中，反应溶液达到所需值，c）通过加入至少一种选自有机官能硅烷，季铵化合物，膦酸酯，鏻和锍化合物或其混合物的其它表面改性剂改性二氧化硅涂层 ，并且任选地在步骤d）中，将来自步骤a）的醇除去并用另一种有机溶剂代替分离的纳米颗粒，并将其用于聚合物中的UV保护 。