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40 条记录 (耗时 0.041 秒)

    Process for the preparation of furopyrroles
    35.
    发明申请
    Process for the preparation of furopyrroles 失效

    公开(公告)号：US20070100135A1

    公开(公告)日：2007-05-03

    申请号：US10561393

    申请日：2004-06-28

    申请人： Richard Riggs ,  Nicholas Westwood ,  David Smith ,  Colin Morton

    发明人： Richard Riggs ,  Nicholas Westwood ,  David Smith ,  Colin Morton

    IPC分类号： C07D491/02

    CPC分类号： C07D487/04 ,  C07D491/04

    摘要： The present invention relates to a process for the preparation of furopyrroles of general formula (I), comprising (a) heating a compound of the formula (II) under microwave irradiation optionally in the presence of an inert solvent, wherein A1 and A2 are C1-C18alkyl, C2-C18alkenyl, C2-C18alkynyl, C5-C8cycloalkyl, C5-C8cycloalkenyl, aryl or heteroaryl, A3 is hydrogen, C1-C18alkyl, cyanomethyl, Ar3, —CR30R31—(CH2)m—Ar3 or Y—R32, wherein R30 and R31 independently of each other stand for hydrogen or C1-C4alkyl, or phenyl which can be substitute up to three times with C1-C4alkyl, Ar3 stands for aryl, C5-C8 cloalkyl, C5-C8cycloalkenyl or heteroaryl, which can be substituted one to three times with C1-C9alkyl, C1-C8alkoxy, halogen or phenyl, which can be substituted with C1-C8alkyI or C1-C8alkoxy one to three times, and m stands for 0, 1, 2, 3 or 4, R is C1‘-C18alkyl, in particular C1-C4alkyl, aryl, in particular phenyl, or aralkyl, in particular benzyl, which can be substituted one to three times with C1-C8alkyl, C1-C8alkoxy, or halogen, Y is —C(O)—, —C(O)O—, —C(O)NH—, —SO2NH— or —SO2— and R32 is C1-C18alkyl, Ar3, or aralkyl. The furopyrroles of the general formula (I) can be can be obtained in high yield and high purity by the process of the present invention.

    Modified zinc oxide particles
    38.
    发明授权
    Modified zinc oxide particles 有权
    改性氧化锌颗粒

    公开(公告)号：US08747804B2

    公开(公告)日：2014-06-10

    申请号：US13054636

    申请日：2009-07-14

    申请人： Andrey Karpov ,  Hartmut Hibst ,  Simon Schambony ,  Richard Riggs ,  Sylke Haremza

    发明人： Andrey Karpov ,  Hartmut Hibst ,  Simon Schambony ,  Richard Riggs ,  Sylke Haremza

    IPC分类号： C01G9/02

    CPC分类号： C09C1/043 ,  C01G9/02 ,  C01P2002/84

    摘要： Process for the preparation of modified ZnO particles in which a zinc salt and a base are mixed in a polar solvent and, if appropriate after the precipitation of a precipitation product, the polar solvent is removed and a residue is obtained, where the residue is taken up in a nonpolar solvent, surface-active substances are added, optionally further effect substances are added and then the modified ZnO particles are separated off from further by-products. Materials such as plastics, coatings or paints comprising modified ZnO particles. Methods for the incorporation of modified ZnO particles into materials, where the modified ZnO particles are incorporated into the materials in the form of dispersions or suspensions. Use of modified ZnO particles for protecting material against the effect of light, heat, oxygen or free radicals, as catalysts, for semiconductive films or cosmetic applications.

    摘要翻译： 制备其中将锌盐和碱在极性溶剂中混合的改性ZnO颗粒的制备方法，并且如果适当，在析出产物沉淀后，除去极性溶剂，得到残留物，其中残留物被 在非极性溶剂中加入表面活性物质，任选地添加另外的效果物质，然后将改性的ZnO颗粒与进一步的副产物分离。 诸如塑料，涂料或包含改性ZnO颗粒的涂料的材料。 将改性的ZnO颗粒引入到材料中的方法，其中将改性的ZnO颗粒以分散体或悬浮液的形式引入材料中。 使用改性ZnO颗粒来保护材料免受光，热，氧或自由基作为半导体膜或化妆品应用的催化剂的影响。

    UV LIGHT-PROTECTIVE AGENT BASED ON MIXED INORGANIC-ORGANIC SYSTEMS
    40.
    发明申请
    UV LIGHT-PROTECTIVE AGENT BASED ON MIXED INORGANIC-ORGANIC SYSTEMS 审中-公开
    基于混合无机有机系统的紫外线防护剂

    公开(公告)号：US20100135939A1

    公开(公告)日：2010-06-03

    申请号：US12594207

    申请日：2008-03-13

    申请人： Stephan Lehmann ,  Richard Riggs ,  Valerie Andre

    发明人： Stephan Lehmann ,  Richard Riggs ,  Valerie Andre

    IPC分类号： A61K8/36 ,  A61K8/30 ,  A61Q17/04

    CPC分类号： A61Q17/04 ,  A61K8/11 ,  A61K8/27 ,  A61K8/29 ,  A61K8/37 ,  A61K8/415 ,  A61K8/4966 ,  A61K2800/413 ,  A61K2800/57 ,  B82Y5/00

    摘要： The present invention relates to photoprotective preparations, in particular in the field of cosmetics, based on inorganic-organic mixed systems. The present invention relates in particular to photoprotective preparations comprising nanoparticles of at least one metal derivative, at least one photoprotective compound chemically bonded to these metal derivative nanoparticles, and at least one further organic UV photoprotective agent which is different from the photoprotective compound bonded to the metal derivative nanoparticles.

    摘要翻译： 本发明涉及基于无机 - 有机混合体系的光保护制剂，特别涉及化妆品领域。 本发明特别涉及包含至少一种金属衍生物的纳米颗粒，至少一种与这些金属衍生物纳米颗粒化学键合的光保护性化合物的光保护制剂，以及至少一种另外的有机UV光保护剂，其不同于与 金属衍生物纳米粒子。