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    PROCESS FOR THE PREPARATION OF POLYCARBONATE
    23.
    发明申请
    PROCESS FOR THE PREPARATION OF POLYCARBONATE 失效
    制备聚碳酸酯的方法

    公开(公告)号：US20110009592A1

    公开(公告)日：2011-01-13

    申请号：US12829845

    申请日：2010-07-02

    申请人： Pieter Ooms ,  Andreas Bulan ,  Johann Rechner ,  Rainer Weber ,  Marc Buts ,  Johan Vanden Eynde

    发明人： Pieter Ooms ,  Andreas Bulan ,  Johann Rechner ,  Rainer Weber ,  Marc Buts ,  Johan Vanden Eynde

    IPC分类号： C08G64/04

    CPC分类号： C08G64/307

    摘要： A combined process for the preparation of polycarbonate from bisphenols and diaryl carbonates, the monophenol liberated being reacted again for the preparation of the diaryl carbonate and the alkali metal halide forming in the preparation of the diaryl carbonate being converted by electrochemical oxidation, optionally over a gas diffusion electrode, into chlorine and alkali hydroxide solution, the chlorine being recycled into the preparation of the phosgene and the alkali hydroxide solution being recycled into the preparation of the diaryl carbonate.

    摘要翻译： 用于从双酚和碳酸二芳基酯制备聚碳酸酯的组合方法中，释放的单酚再次反应，用于制备碳酸二芳基酯和在制备碳酸二芳基酯时通过电化学氧化转化而形成的碱金属卤化物，任选地在气体 扩散电极，进入氯和碱性氢氧化物溶液中，氯被循环到光气的制备中，碱性氢氧化物溶液被循环到碳酸二芳基酯的制备中。

    PHASE BOUNDARY PROCESSES FOR PREPARING POLYCARBONATES
    28.
    发明申请
    PHASE BOUNDARY PROCESSES FOR PREPARING POLYCARBONATES 有权
    制备聚碳酸酯的相边界工艺

    公开(公告)号：US20090275709A1

    公开(公告)日：2009-11-05

    申请号：US12398243

    申请日：2009-03-05

    申请人： Wolfgang Ebert ,  Christian Kords ,  Rolf Bachmann ,  Lars Obendorf ,  Johan Vanden Eynde ,  Bert Ruytinx ,  Johann Seeba

    发明人： Wolfgang Ebert ,  Christian Kords ,  Rolf Bachmann ,  Lars Obendorf ,  Johan Vanden Eynde ,  Bert Ruytinx ,  Johann Seeba

    IPC分类号： C08F2/04

    CPC分类号： C08G64/24

    摘要： Continuous processes for preparing polycarbonates having a weight average molecular weight MW, of 15,000 to 200,000 g/mol, the processes comprising reacting a dihydroxydiarylalkane and phosgene in the presence of a catalyst in a phase boundary process comprising: continuously dispersing in a disperser an organic phase comprising at least a portion of the phosgene and a solvent suitable for the polycarbonate and an aqueous phase comprising the dihydroxydiarylalkane, water and an alkali solution present in an amount of 1.5 to 2.5 moles per mole of the dihydroxydiarylalkane, to form a mixture; reacting the mixture in a first reactor with a residence time of less than 0.5 seconds; further reacting the mixture in a second reactor with addition of further alkali solution and, optionally, a chain terminator; and effecting further condensation in a third reactor with addition of further alkali solution and, optionally, a chain terminator, in the presence of the catalyst.

    摘要翻译： 用于制备重均分子量MW为15,000至200,000g / mol的聚碳酸酯的连续方法，包括在相界过程中在催化剂存在下使二羟基二芳基烷烃和光气反应的方法包括：在分散器中连续分散有机相 包含至少一部分光气和适用于聚碳酸酯的溶剂和包含二羟基二芳基烷烃的水相，每摩尔二羟基二芳基烷烃存在的量为1.5至2.5摩尔的水和碱溶液形成混合物; 使混合物在第一反应器中反应，停留时间小于0.5秒; 在第二反应器中进一步使混合物反应，再加入另外的碱溶液和任选的链终止剂; 并在催化剂存在下，在第三反应器中进一步加入另外的碱溶液和任选的链终止剂。

    Transesterification process for the production of polycarbonates having a low content of volatile compounds
    29.
    发明授权
    Transesterification process for the production of polycarbonates having a low content of volatile compounds 有权
    用于生产挥发性化合物含量低的聚碳酸酯的酯交换方法

    公开(公告)号：US07279544B2

    公开(公告)日：2007-10-09

    申请号：US11002866

    申请日：2004-12-02

    申请人： Uwe Hucks ,  Melanie Möthrath ,  Helmut-Werner Heuer ,  Thomas König ,  Lydia Simon ,  Marc Buts ,  Johan Vanden Eynde

    发明人： Uwe Hucks ,  Melanie Möthrath ,  Helmut-Werner Heuer ,  Thomas König ,  Lydia Simon ,  Marc Buts ,  Johan Vanden Eynde

    IPC分类号： C08G64/00

    CPC分类号： C08G64/307

    摘要： A multi stage process for the production of polycarbonates having low monomer content is disclosed. The process entails, in sequence, (i) transesterifying in the melt at least one dihydroxyaryl compound with at least one diaryl carbonate in the presence of at least one onium catalyst to produce a polycondensate that contains monomers, (ii) introducing into the polycondensate an inhibitor in an hypostoichiometric amount in relation to the catalyst and (iii) reducing in a finishing reactor the content of monomers in said polycondensate. The polycarbonate thus produced is characterized in that it contains less than 350 ppm of diphenyl carbonate, less than 40 ppm of 2,2-bis-(4-hydroxyphenyl)propane and less than 150 ppm of phenol.

    摘要翻译： 公开了一种生产具有低单体含量的聚碳酸酯的多阶段方法。 该方法按顺序进行，（i）在至少一种鎓催化剂的存在下，使至少一种二羟基芳基化合物与至少一种碳酸二芳基酯在至少一种二羟基芳基化合物中酯交换以产生含有单体的缩聚物，（ii）将所述缩聚物引入到缩聚物中 抑制剂相对于催化剂的低化学计量量，和（iii）在精整反应器中还原所述缩聚物中单体的含量。 如此生产的聚碳酸酯的特征在于其含有少于350ppm的碳酸二苯酯，小于40ppm的2,2-双 - （4-羟基苯基）丙烷和小于150ppm的苯酚。

    Continuous process for the production of carboxylic acid diaryl esters
    30.
    发明授权
    Continuous process for the production of carboxylic acid diaryl esters 失效
    用于生产羧酸二芳基酯的连续方法

    公开(公告)号：US06680400B2

    公开(公告)日：2004-01-20

    申请号：US10015432

    申请日：2001-12-12

    申请人： Wolfgang Alewelt ,  Steffen Kühling ,  Johan Vanden Eynde ,  Dirk Van Meirvenne

    发明人： Wolfgang Alewelt ,  Steffen Kühling ,  Johan Vanden Eynde ,  Dirk Van Meirvenne

    IPC分类号： C07C6996

    CPC分类号： C07C68/02 ,  C07C69/96

    摘要： An improvement to the interfacial boundary process for continuous production of carbonic acid diaryl esters is disclosed. The process that entails a reaction of monophenols in an inert solvent, in the presence of an alkaline solution and a nitrogen base catalyst, is carried out in two stages. In the first stage phosgene, inert solvent and phenol in solution are combined to form a material system and a second stage the reaction to form carbonic acid diaryl ester is completed. The improvement comprising maintaining in the first stage a pH of 11.0 to 12.0 and a temperature below 40° C. and a pH of 7.5-10.5 and a temperature

    摘要翻译： 公开了连续生产碳酸二芳基酯的界面边界方法的改进。 在碱性溶液和氮碱催化剂存在下，在惰性溶剂中引起单酚反应的方法分两个阶段进行。 在第一阶段，将光气中的惰性溶剂和苯酚合并形成物质体系，第二阶段完成形成碳酸二芳基酯的反应。 该改进包括在第一阶段保持pH为11.0至12.0，温度低于40℃，pH为7.5-10.5，温度<50℃。