Monomer Solution for Producing Polycarbonate
    2.
    发明申请
    Monomer Solution for Producing Polycarbonate 失效
    用于生产聚碳酸酯的单体溶液

    公开(公告)号:US20090088540A1

    公开(公告)日:2009-04-02

    申请号:US11863659

    申请日:2007-09-28

    IPC分类号: C08F2/00

    摘要: A non-reactive monomer mixture is formed from a dihydroxy component having one or more dihydroxy compounds dissolved in a melted diaryl carbonate. The dihydroxy component has less than 600 ppb alkali metal, an acid stabilizer, or both less than 600 ppb alkali metal and an acid stabilizer. The dihydroxy compounds of the dihydroxy component and the diaryl carbonate are present in a mole ratio of from 0.9 to 1.1. The monomer mixture is at a temperature between the saturation point of the monomer mixture and the highest melting temperature of the individual dihydroxy compounds. The non-reactive monomer mixture can be stored and transported and then polymerized to form polycarbonate upon addition of a catalyst.

    摘要翻译: 非反应性单体混合物由具有溶解在熔融的碳酸二芳基酯中的一种或多种二羟基化合物的二羟基组分形成。 二羟基组分具有少于600ppb的碱金属,酸稳定剂,或两者少于600ppb的碱金属和酸稳定剂。 二羟基成分和碳酸二芳基酯的二羟基化合物的摩尔比为0.9-1.1。 单体混合物处于单体混合物的饱和点和各个二羟基化合物的最高熔融温度之间的温度。 非反应性单体混合物可以储存和运输,然后在加入催化剂时聚合形成聚碳酸酯。

    Method of preparing a purified ester-substituted phenol stream
    6.
    发明授权
    Method of preparing a purified ester-substituted phenol stream 有权
    制备纯化的酯取代的苯酚流的方法

    公开(公告)号:US08034967B2

    公开(公告)日:2011-10-11

    申请号:US11948063

    申请日:2007-11-30

    摘要: A method of producing a purified ester-substituted phenol stream is provided. The method includes a first step of obtaining from a melt transesterification reaction a byproduct stream containing a residual ester-substituted diaryl carbonate, an ester-substituted phenol, a residual melt transesterification catalyst, and a catalyst degradation product. A second step includes treating the reaction byproduct stream to separate ester-substituted phenol and catalyst degradation product from residual ester-substituted diaryl carbonate and residual melt transesterification catalyst to create a light recycle stream containing ester-substituted phenol and catalyst degradation product and a heavy recycle stream containing residual ester-substituted diaryl carbonate and residual melt transesterification catalyst. A third step includes treating the light recycle stream to reduce catalyst degradation product concentration thereby producing a purified ester-substituted phenol stream.

    摘要翻译: 提供了一种生产纯化的酯取代的苯酚流的方法。 该方法包括从熔融酯交换反应获得含有残留的酯取代的碳酸二芳酯,酯取代的酚,残余熔融酯交换催化剂和催化剂降解产物的副产物流的第一步骤。 第二步包括处理反应副产物流以分离酯取代的苯酚和残留的酯取代的碳酸二芳酯和残余的熔融酯交换催化剂的催化剂降解产物,以产生含有酯取代的苯酚和催化剂降解产物的轻循环物流和重循环 含有残余酯取代的碳酸二芳基酯和残余熔体酯交换催化剂的流。 第三步骤包括处理轻质循环物流以降低催化剂降解产物浓度,从而产生纯化的酯取代的苯酚流。

    Method of preparing a purified ester-substituted phenol stream
    7.
    发明申请
    Method of preparing a purified ester-substituted phenol stream 有权
    制备纯化的酯取代的苯酚流的方法

    公开(公告)号:US20090143610A1

    公开(公告)日:2009-06-04

    申请号:US11948063

    申请日:2007-11-30

    IPC分类号: C07C69/76

    摘要: A method of producing a purified ester-substituted phenol stream is provided. The method includes a first step of obtaining from a melt transesterification reaction a byproduct stream containing a residual ester-substituted diaryl carbonate, an ester-substituted phenol, a residual melt transesterification catalyst, and a catalyst degradation product. A second step includes treating the reaction byproduct stream to separate ester-substituted phenol and catalyst degradation product from residual ester-substituted diaryl carbonate and residual melt transesterification catalyst to create a light recycle stream containing ester-substituted phenol and catalyst degradation product and a heavy recycle stream containing residual ester-substituted diaryl carbonate and residual melt transesterification catalyst. A third step includes treating the light recycle stream to reduce catalyst degradation product concentration thereby producing a purified ester-substituted phenol stream.

    摘要翻译: 提供了一种生产纯化的酯取代的苯酚流的方法。 该方法包括从熔融酯交换反应获得含有残留的酯取代的碳酸二芳酯,酯取代的酚,残余熔融酯交换催化剂和催化剂降解产物的副产物流的第一步骤。 第二步包括处理反应副产物流以分离酯取代的苯酚和残留的酯取代的碳酸二芳酯和残余的熔融酯交换催化剂的催化剂降解产物,以产生含有酯取代的苯酚和催化剂降解产物的轻循环物流和重循环 含有残余酯取代的碳酸二芳基酯和残余熔体酯交换催化剂的流。 第三步骤包括处理轻质循环物流以降低催化剂降解产物浓度,从而产生纯化的酯取代的苯酚流。

    Process for manufacture of bisphenols
    9.
    发明授权
    Process for manufacture of bisphenols 有权
    双酚制造工艺

    公开(公告)号:US06635788B1

    公开(公告)日:2003-10-21

    申请号:US10248155

    申请日:2002-12-20

    IPC分类号: C07C3916

    CPC分类号: C07C37/20 C07C37/84 C07C39/16

    摘要: A method for the manufacture of bisphenols comprises introducing a combined feed stream comprising a feed stream and a recycle stream into a reactor system comprising at least one reactor containing a catalytic proportion of an acid catalyst and wherein the combined feed stream comprises a carbonyl compound and a stoichiometric excess of phenol; removing from the reactor system a reactor effluent; splitting the reactor effluent into a crystallization feed stream and an effluent recycle stream; extracting from said crystallization feed stream a bisphenol adduct, remainder comprising a mother liquor stream; dehydrating said mother liquor stream and said effluent recycle stream in a dehydrator wherein excess water and carbonyl compound are removed; and recycling the dehydrated mother liquor and the dehydrated effluent recycle stream back to the combined feed stream to effect improved production of p,p-bisphenol, along with increased reactor selectivity and reduced promoter quantities.

    摘要翻译: 制备双酚的方法包括将包含进料流和再循环料流的组合进料流引入包含至少一个含有催化剂比例的酸催化剂的反应器的反应器系统中,其中组合进料流包含羰基化合物和 化学计量过量的苯酚; 从反应器系统中除去反应器流出物; 将反应器流出物分解成结晶进料流和流出物再循环流; 从所述结晶进料流中提取双酚加合物,其余包含母液流; 在脱水器中脱水所述母液流和所述废水再循环流,其中除去过量的水和羰基化合物; 并将脱水的母液和脱水的废液再循环物流再循环回到组合的进料流中,以改善p,p双酚的生产,同时增加反应器的选择性和减少的助催化剂量。