NANOPARTICLES
    53.
    发明申请
    NANOPARTICLES 审中-公开
    纳米比亚

    公开(公告)号:US20100221525A1

    公开(公告)日:2010-09-02

    申请号:US12063824

    申请日:2006-10-26

    Abstract: The invention relates to zinc oxide nanoparticles having an average particle size, determined by particle correlation spectroscopy (PCS), in the range from 3 to 20 nm whose particle surface has been modified by means of at least one copolymer comprising at least one monomer containing hydrophobic radicals and at least one monomer containing hydrophilic radicals, dispersed in an organic solvent, characterised in that they are obtainable by a process in which 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 copolymer comprising at least one monomer containing hydrophobic radicals and at least one monomer containing hydrophilic radicals when the absorption edge in the UV/VIS spectrum of the reaction solution has reached the desired value, and optionally in step c) the alcohol from step a) is removed and replaced by another organic solvent, to isolated particles, and to the use thereof for UV protection in polymers.

    Abstract translation: 本发明涉及具有通过粒子相关光谱法(PCS)测定的平均粒度的氧化锌纳米颗粒,其范围为3至20nm,其颗粒表面已经通过至少一种包含至少一种含有疏水性的单体的共聚物 自由基和至少一种含有分散在有机溶剂中的亲水基团的单体,其特征在于它们可以通过以下方法获得:其中在步骤a)中将一种或多种纳米颗粒的前体转化为醇中的纳米颗粒, 步骤b)当反应溶液的UV / VIS光谱中的吸收边缘已经达到时,通过加入至少一种包含至少一种含有疏水基团的单体和至少一种含有亲水基团的单体的共聚物来终止纳米颗粒的生长 并且任选地在步骤c)中,将来自步骤a)的醇除去并用另一种有机溶剂代替, 胶结颗粒,以及其在聚合物中用于UV保护的用途。

    NANOPARTICLES
    56.
    发明申请
    NANOPARTICLES 审中-公开
    纳米比亚

    公开(公告)号:US20100092761A1

    公开(公告)日:2010-04-15

    申请号:US12302150

    申请日:2007-05-08

    Abstract: The invention relates to nanoparticles, in particular surface-modified nanoparticles, having an average particle size, determined by means of particle correlation spectroscopy (PCS) or transmission electron microscope, in the range from 3 to 50 nm, dispersed in an organic solvent, characterised in that they are obtainable by a process in which one or more precursors of the nanoparticles are reacted with a compound M3−x[O3−xSiR1+x] in an organic solvent to give the nanoparticles, where x stands for an integer selected from 0, 1 or 2, M stands for H, Li, Na or K, and all R each, independently of one another, stand for a branched or unbranched, saturated or unsaturated hydrocarbon radical having 1 to 28 C atoms, in which one or more C atoms may be replaced by O, and to the use thereof for UV protection in polymers.

    Abstract translation: 本发明涉及分散在有机溶剂中的具有通过粒子相关光谱法(PCS)或透射电子显微镜测定的平均粒径的纳米颗粒,特别是表面改性的纳米颗粒,其特征在于其表面积 因为它们可以通过其中一种或多种纳米颗粒的前体与有机溶剂中的化合物M3-x [O3-xSiR1 + x]反应得到纳米颗粒的方法获得,其中x表示选自0 ,1或2,M代表H,Li,Na或K,并且所有R各自独立地代表具有1至28个C原子的支链或非支链,饱和或不饱和烃基,其中一个或多个 C原子可以被O取代,也可以用于聚合物中的UV保护。

    Nanoparticles
    59.
    发明申请
    Nanoparticles 审中-公开
    纳米颗粒

    公开(公告)号:US20070154709A1

    公开(公告)日:2007-07-05

    申请号:US10587299

    申请日:2004-12-15

    Abstract: The invention relates to polymer-modified nanoparticles which are suitable as UV stabilisers in polymers, characterised in that they are obtainable by a process in which, in a step a), an inverse emulsion comprising one or more water-soluble precursors of the nanoparticles or a melt is prepared with the aid of a random copolymer of at least one monomer containing hydrophobic radicals and at least one monomer containing hydrophilic radicals, and, in a step b), particles are produced, and to the use thereof for UV protection in polymers.

    Abstract translation: 本发明涉及适合作为聚合物中的UV稳定剂的聚合物改性的纳米颗粒,其特征在于它们可通过以下方法获得:在步骤a)中,包含一种或多种纳米颗粒的水溶性前体的反相乳液或 借助于至少一种含有疏水基团的单体和至少一种含有亲水基团的单体的无规共聚物制备熔体,并且在步骤b)中,制备颗粒,并且其用于聚合物中的UV保护 。

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