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    METHODS FOR THE ANALYSIS OF LIQUID HALOSILANES
    4.
    发明申请
    METHODS FOR THE ANALYSIS OF LIQUID HALOSILANES 审中-公开
    液体卤化物分析方法

    公开(公告)号：US20130260468A1

    公开(公告)日：2013-10-03

    申请号：US13432962

    申请日：2012-03-28

    申请人： Javier Campo-Manoyo ,  Antonio Valls-Vaque ,  Maria Tomas-Martinez

    发明人： Javier Campo-Manoyo ,  Antonio Valls-Vaque ,  Maria Tomas-Martinez

    IPC分类号： G01N21/59

    CPC分类号： G01N21/59 ,  G01N21/74

    摘要： Methods for the direct analysis of liquid halosilanes. In particular, methods for using graphite furnace atomic absorption (GFAA) spectrometric analysis to evaluate the purity of liquid halosilanes by identifying and quantitatively measuring trace elements or impurities, such as, but not limited to metal species that may be present in liquid halosilanes.

    摘要翻译： 直接分析液体卤代硅烷的方法。 特别地，使用石墨炉原子吸收（GFAA）光谱分析来评估液体卤代硅烷的纯度的方法，通过鉴定和定量测量微量元素或杂质，例如但不限于可能存在于液体卤代硅烷中的金属物质。

    Method for preparing a polycarbonate oligomer mixture at low temperature for manufacturing polycarbonate
    7.
    发明授权
    Method for preparing a polycarbonate oligomer mixture at low temperature for manufacturing polycarbonate 失效
    低温制备聚碳酸酯低聚物混合物制造聚碳酸酯的方法

    公开(公告)号：US07041775B2

    公开(公告)日：2006-05-09

    申请号：US10830163

    申请日：2004-04-21

    申请人： Maria Tomas Martinez ,  Alberto Nisoli ,  Alfredo Lopez Carretero ,  Ganesh Kailasam ,  David Domingo ,  Patrick Joseph McCloskey

    发明人： Maria Tomas Martinez ,  Alberto Nisoli ,  Alfredo Lopez Carretero ,  Ganesh Kailasam ,  David Domingo ,  Patrick Joseph McCloskey

    IPC分类号： C08G64/00

    CPC分类号： C08G64/307 ,  B01J19/18 ,  B01J19/1806 ,  B01J19/1887 ,  B01J19/20 ,  B01J2219/00031 ,  B01J2219/0004 ,  B01J2219/00083 ,  B01J2219/00094 ,  B01J2219/00166 ,  B01J2219/00184 ,  B01J2219/00186 ,  C08G64/205

    摘要： The present invention provides a method of making polycarbonate oligomers, polycarbonate, molded articles formed from polycarbonate, and an apparatus for making polycarbonate. An oligomer mixture is first prepared by the steps of providing an equilibration system comprising a vessel, a reaction mixture contained within the vessel, and means for mixing the reaction mixture contained within the vessel wherein the reaction mixture comprises a melted activated diaryl carbonate composition, and a catalyst present in sufficient amount to initiate an oligomerization reaction between a dihydroxy composition and the activated diaryl carbonate to form polycarbonate oligomers. The method further includes the steps of introducing a melted dihydroxy composition to the reaction mixture contained within the equilibration system, maintaining the reaction mixture contained within the vessel at an oligomerization temperature, said oligomerization temperature being below the melting point the dihydroxy composition, and sufficiently high to allow formation of a homogeneous melt within the vessel, and continuously drawing off a product stream from the equilibration system, wherein the product stream comprises a polycarbonate oligomer mixture. This polycarbonate oligomer mixture is suitably used as a feed stock for producing polycarbonate in a polycondensation system. The polycarbonate is suitably used for the preparation of molded articles.

    摘要翻译： 本发明提供一种制备聚碳酸酯低聚物，聚碳酸酯，由聚碳酸酯形成的模制品的方法和用于制备聚碳酸酯的装置。 首先通过以下步骤制备低聚物混合物，所述步骤包括提供包含容器，容器内的反应混合物的平衡系统和用于混合包含在容器内的反应混合物的装置，其中反应混合物包含熔融的活化碳酸二芳基酯组合物和 存在足够量的催化剂以引发二羟基组合物和活化的碳酸二芳基酯之间的低聚反应以形成聚碳酸酯低聚物。 该方法还包括以下步骤：将熔融的二羟基组合物引入平衡系统中包含的反应混合物中，将容器内的反应混合物保持在低聚温度，所述低聚温度低于二羟基组合物的熔点，并且足够高 以允许在容器内形成均匀的熔体，并且从平衡系统连续地抽出产物流，其中产物流包含聚碳酸酯低聚物混合物。 该聚碳酸酯低聚物混合物适合用作在缩聚体系中制造聚碳酸酯的原料。 聚碳酸酯适合用于制备模塑制品。