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    Process for manufacture of bisphenols
    21.
    发明授权
    Process for manufacture of bisphenols 有权
    双酚制造工艺

    公开(公告)号：US06858759B2

    公开(公告)日：2005-02-22

    申请号：US10639929

    申请日：2003-08-12

    申请人： Martin Herke Oyevaar ,  Rudy Francois Alain Jos Peemans ,  Eduard Hendricus Schlarmann

    发明人： Martin Herke Oyevaar ,  Rudy Francois Alain Jos Peemans ,  Eduard Hendricus Schlarmann

    IPC分类号： C07C37/20 ,  C07C37/84 ,  C07C39/16

    CPC分类号： C07C37/84 ,  C07C37/20 ,  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。

    Manufacture of bisphenol-A
    23.
    发明授权
    Manufacture of bisphenol-A 失效
    双酚A的制造

    公开(公告)号：US5786522A

    公开(公告)日：1998-07-28

    申请号：US712929

    申请日：1996-09-13

    申请人： Michael J. Cipullo

    发明人： Michael J. Cipullo

    IPC分类号： C07C37/20 ,  C07B61/00 ,  C07C37/74 ,  C07C37/84 ,  C07C37/86 ,  C07C39/16

    CPC分类号： C07C37/84 ,  C07C37/685 ,  C07C37/74 ,  Y02P20/125

    摘要： An integrated process for the preparation and recovery of BPA in pure form utilizes a series of steps to crystallize pure BPA of improved color stability and recycle separated impurities to improve overall yields. The principal impurity recycled to the process is o,p-BPA which functions as a color stabilizer in the product and in polycarbonate resins prepared from the BPA.

    摘要翻译： 以纯形式制备和回收BPA的综合方法采用一系列步骤，使纯BPA结晶，改善颜色稳定性和回收分离的杂质，以提高总产率。 再循环到该方法中的主要杂质是o，p-BPA，其作为产品中的颜色稳定剂和由BPA制备的聚碳酸酯树脂。

    Process for recovery of bisphenol-A from thermoplastic polymer containing dihydric phenol units
    25.
    发明授权
    Process for recovery of bisphenol-A from thermoplastic polymer containing dihydric phenol units 失效
    从含二羟酚单元的热塑性聚合物中回收双酚A的方法

    公开(公告)号：US5675044A

    公开(公告)日：1997-10-07

    申请号：US673990

    申请日：1996-07-01

    申请人： Paul Eijsbouts ,  Jos De Heer ,  Gabrie Hoogland ,  Srikanth Nanguneri ,  Gert De Wit

    发明人： Paul Eijsbouts ,  Jos De Heer ,  Gabrie Hoogland ,  Srikanth Nanguneri ,  Gert De Wit

    IPC分类号： C07C27/02 ,  C07C37/52 ,  C07C37/82 ,  C07C39/16 ,  C07C37/84

    CPC分类号： C07C39/16 ,  C07C37/0555 ,  C08J11/16 ,  C08J2369/00 ,  Y02W30/705

    摘要： A method of recovering dihydric phenol, particularly bisphenol-A, from compositions containing the reaction residue of bisphenol-A units which method comprises: a. granulating a bisphenol-A containing polymer; b. treating the particles with an alcohol, or any other organic swelling solvent miscible with water and easily distilled off from an aqueous solution, preferably a C.sub.1 -C.sub.10 alcohol for a time sufficient to swell the particles; c. contacting the swelled particles with a ammoniacal solution at a temperature of at least about 25.degree. C. depending on the swelling solvent employed in order to selectively sever the ester bonds of the bisphenol-A residue units; d. separating the liquid phase from the solid phase; e. distilling ammonia and swelling solvent from the liquid phase of d. above, thus obtaining an essentially aqueous solution with dissolved urea and partially precipitated bisphenol-A; f. adding sufficient water to the residue of e. above to precipitate bisphenol-A thereby forming a liquid and solid phase; g. recovering the solid phase of bisphenol-A; and h. drying the bisphenol-A. Since urea is soluble in water, urea goes into solution in step f. above. The urea is, therefore, recoverable, as well, which can be used as such or broken down into its component parts such as carbon dioxide and ammonia which ammonia can also be reused in this ammonical process.

    摘要翻译： 从含有双酚A单元的反应残基的组合物中回收二元酚，特别是双酚A的方法，该方法包括：a。 造粒含双酚A的聚合物; b。 用醇处理颗粒，或与水混溶的任何其它有机溶胀溶剂，并且容易从水溶液，优选C1-C10醇中蒸出足以溶胀颗粒的时间; C。 根据所用的溶胀溶剂，使溶胀的颗粒与氨溶液在至少约25℃的温度下接触，以选择性地切断双酚A残基单元的酯键; d。 将液相与固相分离; e。 从d的液相中蒸馏氨和溶胀溶剂。 从而获得具有溶解的尿素和部分沉淀的双酚A的基本水溶液; F。 向e的残留物中加入足够的水。 以沉淀双酚A，从而形成液相和固相; G。 回收双酚A的固相; 和h。 干燥双酚A。 由于尿素可溶于水，所以在步骤f中尿素进入溶液。 以上。 因此，尿素也是可回收的，其可以原样使用或分解成其组分部分如二氧化碳和氨，氨也可以在该氨过程中再次使用。

    Process for purifying a bisphenol
    28.
    发明授权
    Process for purifying a bisphenol 失效
    纯化双酚的方法

    公开(公告)号：US5512700A

    公开(公告)日：1996-04-30

    申请号：US401513

    申请日：1995-03-10

    申请人： Emil Patrascu ,  Karl Kraehling ,  Jochen Gressmann

    发明人： Emil Patrascu ,  Karl Kraehling ,  Jochen Gressmann

    IPC分类号： C07C37/84 ,  C07C39/16

    CPC分类号： C07C37/84 ,  C07C37/685

    摘要： A process for the purification of a crude bisphenol comprises the following steps:(1) preparing a mixture comprising from about 35 to about 70% of a crude bisphenol and from about 65 to about 30% of water, by the total weight of bisphenol and water, without addition of a substantial amount of an organic solvent or an alkaline compound, at a pressure above atmospheric and a temperature above about 100.degree. C.,(2) crystallizing bisphenol at a pressure below atmospheric,(3) separating crystalline bisphenol from the mother liquor,(4) dividing at least a portion of the mother liquor into a bisphenol-rich oil phase and a water-rich phase,(5) preparing a mixture comprising at least a portion of the bisphenol-rich oil phase, water and optionally an additional amount of crude bisphenol at a pressure above atmospheric and a temperature above about 100.degree. C.,(6) cooling the mixture and crystallizing bisphenol; and(7) separating crystalline bisphenol from the mother liquor.

    摘要翻译： 用于纯化粗双酚的方法包括以下步骤：（1）制备包含约35％至约70％粗双酚和约65至约30％水的混合物与双酚的总重量， 水，不加大量的有机溶剂或碱性化合物，在高于大气压和高于约100℃的温度下，（2）在低于大气压的压力下结晶双酚，（3）将结晶双酚与 母液，（4）将至少一部分母液分成富含双酚的油相和富水相，（5）制备包含至少一部分富含双酚的油相的混合物，水 和任选的另外量的粗双酚在高于大气压和高于约100℃的温度下，（6）冷却混合物并结晶双酚; 和（7）从母液中分离出结晶双酚。