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    • 74. 发明公开
    • METHOD FOR PURIFYING CHLOROSILANES
    • VERFAHREN ZUR REINIGUNG VON CHLORSILANEN
    • EP2465819A1
    • 2012-06-20
    • EP10808063.1
    • 2010-07-07
    • Shin-Etsu Chemical Co., Ltd.
    • NAGAI, NaokiSHIMIZU, TakaakiUEHARA, KatsuhiroKUBOTA, Tohru
    • C01B33/107
    • C01B33/10778
    • The present invention provides a method for obtaining high purity chlorosilanes from chlorosilanes containing boron impurities and phosphorus impurities. On the basis of the finding that solid by-product formation in the purification of chlorosilanes by adding an aromatic aldehyde results from a catalytic reaction by iron ions or rust-like iron, a Lewis base having a masking effect is added to chlorosilanes. Examples of the Lewis base include a divalent sulfur-containing compound and an alkoxysilane. The divalent sulfur-containing compound is preferably a compound represented by the formula: R-S-R' (wherein R is a hydrocarbon group or a carbonyl group; and the sum of the carbon atoms in R and R' is 7 or more), and the alkoxysilane is preferably a compound represented by the formula: R x Si(OR') 4-x (wherein R and R' are each an alkyl group having 1 to 20 carbon atoms).
    • 本发明提供从含有硼杂质和磷杂质的氯硅烷中获得高纯度氯硅烷的方法。 基于通过添加芳族醛的氯硅烷的纯化形成固体副产物的结果是由铁离子或铁锈等的催化反应产生,将具有掩蔽效果的路易斯碱加入到氯硅烷中。 路易碱碱的实例包括二价含硫化合物和烷氧基硅烷。 二价含硫化合物优选为由下式表示的化合物:RSR'(其中R为烃基或羰基,R和R'中的碳原子总数为7以上),烷氧基硅烷 优选为由式:R x Si(OR')4-x(其中R和R'各自为具有1至20个碳原子的烷基)表示的化合物。
    • 78. 发明公开
    • Process for purifying silicon source material by high gravity roating packed beds
    • 通过用高重力旋转固定床为硅源材料的纯化的方法
    • EP2385017A1
    • 2011-11-09
    • EP10004757.0
    • 2010-05-05
    • Su, ShyangSu, YihengVukelic, Michael
    • Su, ShyangSu, YihengVukelic, Michael
    • C01B33/107
    • C01B33/10778B01J19/0066B01J19/1862C01B33/10784C01B33/10789
    • A process is disclosed for purification of silicon source material including trichlorosilane. First, the silicon source material in liquid state with impurities vapor and the other chlorosilane or silane are passing a first high gravity rotating packed bed with spongy metal, at a temperature lower than the boiling point of the silicon source material, the impurities vapor and the other chlorosilane or silane are separated from the liquid silicon source material; second, the silicon source material in liquid state is fed to a second high gravity rotating packed bed, oxygen is also fed to the second high gravity rotating packed bed to form impurity containing siloxane complexes with higher boiling point. Finally distilling to remove the impurity containing siloxane complexes from the silicon source material.
    • 一种方法是游离缺失盘为包含三氯硅烷的硅源材料的纯化。 首先,在液体状态下的硅源材料与杂质的蒸汽和其它氯硅烷或硅烷使第一高重力与海绵状金属旋转床,在比硅源材料的沸点低的温度下,杂质蒸气和 其它氯硅烷或硅烷从液体硅源材料分离; 第二,在液态硅源材料被供给到第二高重力旋转填充床,氧气被如此输送到第二高重力旋转填充床,以形成杂质含硅氧烷配合物的更高的沸点。 最后蒸除去杂质从硅源材料包含硅氧烷络合物。