Process and apparatus for heat treating halogenated compounds
    2.
    发明授权
    Process and apparatus for heat treating halogenated compounds 失效
    用于卤化化合物热处理的方法和装置

    公开(公告)号:US5401890A

    公开(公告)日:1995-03-28

    申请号:US907587

    申请日:1992-07-02

    申请人: John C. Parks

    发明人: John C. Parks

    摘要: This invention relates to an improved process and apparatus for preparing a product predominant in decabromodiphenylethane, the process comprising heat treating the product in a product treating and storage system for a period of time and at a temperature which are sufficient to reduce the amount of unreacted bromine in the product wherein the product treating and storage system comprises an insulated storage vessel, and a heated stream of carrier gas for carrying and suspending the product particles in the storage vessel during the heat treatment step.

    摘要翻译: 本发明涉及用于制备在十溴二苯乙烷中占优势的产品的改进方法和装置,该方法包括在产品处理和储存系统中将产物热处理一段时间和在足以减少未反应溴量 在产品中,其中产品处理和存储系统包括绝热储存容器,以及加热的载气流,用于在热处理步骤中将产品颗粒携带和悬浮在储存容器中。

    Process for a decarbromodiphenylethane predominate product having
enhanced whiteness
    5.
    发明授权
    Process for a decarbromodiphenylethane predominate product having enhanced whiteness 失效
    具有提高白度的脱溴二苯基乙烷主要产品的方法

    公开(公告)号:US5324874A

    公开(公告)日:1994-06-28

    申请号:US930809

    申请日:1992-08-17

    IPC分类号: C07C17/12 C07C25/18

    CPC分类号: C07C25/18 C07C17/12

    摘要: This invention relates to an improvement in a process for preparing a product predominant in decabromodiphenylethane. In the improved process the diphenylethane is reacted with bromine in the presence of bromination catalyst in a reaction vessel by feeding diphenylethane to the reaction vessel below the liquid level of bromine in the reaction vessel. The improvement comprises contacting diphenylethane, bromine, and catalyst at a rate sufficient to obtain a diphenylethane predominant product having enhanced color and particle size.

    摘要翻译: 本发明涉及在十溴二苯乙烷中主要制备产物的方法的改进。 在改进的方法中,在溴化催化剂存在下,在反应容器中将二苯基乙烷与溴反应,通过在反应容器中的溴含量以下的反应容器中加入二苯基乙烷。 改进包括使二苯基乙烷,溴和催化剂以足以获得具有增强的颜色和粒度的二苯基乙烷主要产物的速率接触。

    Process for producing purified brominated aromatic compounds
    6.
    发明授权
    Process for producing purified brominated aromatic compounds 失效
    生产纯化溴化芳族化合物的方法

    公开(公告)号:US4659021A

    公开(公告)日:1987-04-21

    申请号:US791309

    申请日:1985-10-25

    CPC分类号: C07C41/34 C07C17/38

    摘要: A process for purifying crude brominated aromatic compounds such as decabromodiphenyl oxide containing impurities. The crude brominated aromatic compound undergoes a single processing step of grinding in the presence of heated air. The temperature is sufficient to effect substantial removal of impurities and yet remains below the melting point of the brominated aromatic compound.

    摘要翻译: 用于纯化粗溴化芳族化合物如含有杂质的十溴二苯醚的方法。 粗溴化芳族化合物经受在加热空气存在下研磨的单一加工步骤。 温度足以实质上除去杂质,但仍保持低于溴化芳族化合物的熔点。