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1.发明授权
公开(公告)号：US5362841A
公开(公告)日：1994-11-08
申请号：US62884
申请日：1993-05-17
申请人： Sarat Munjal , Clark J. Cummings , Che-I Kao
发明人： Sarat Munjal , Clark J. Cummings , Che-I Kao
摘要： A process for preparing halogenated polycarbonate wherein the total amount of base the end pH of the aqueous phaser and the amount of coupling catalyst employed in the reaction are controlled to selected levels.
摘要翻译： 一种制备卤化聚碳酸酯的方法，其中碱的总量将水相移化剂的最终pH和反应中使用的偶联催化剂的量控制在选定的水平。
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2.发明授权
公开(公告)号：US5212281A
公开(公告)日：1993-05-18
申请号：US742140
申请日：1991-08-08
申请人： Sarat Munjal , Clark J. Cummings , Che-I Kao
发明人： Sarat Munjal , Clark J. Cummings , Che-I Kao
摘要： A process for preparing halogenated polycarbonate wherein the total amount of base, the end pH of the aqueous phase, and the amount of coupling catalyst employed in the reaction are controlled to selected levels.
摘要翻译： 一种制备卤代聚碳酸酯的方法，其中碱的总量，水相的最终pH以及反应中使用的偶联催化剂的量被控制到选定的水平。
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公开(公告)号：US06262226B1
公开(公告)日：2001-07-17
申请号：US09549323
申请日：2000-04-13
IPC分类号： C08F600
CPC分类号： B01J19/1887 , B01J19/28 , B01J2219/00051 , C08G63/78 , C08G63/785
摘要： The present invention is directed to a process for producing a high molecular weight condensation polymer by removing unwanted by-product(s) from a polycondensation equilibrium reaction mixture using a centrifugal force device equipped with a vacuum.
摘要翻译： 本发明涉及通过使用配有真空的离心力装置从缩聚平衡反应混合物中除去不需要的副产物来生产高分子量缩聚物的方法。
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公开(公告)号：US06194541B1
公开(公告)日：2001-02-27
申请号：US09307113
申请日：1999-05-07
IPC分类号： C08F600
CPC分类号： C08F6/005 , B01D19/0005 , B01D19/0052 , B01J10/002 , B01J10/005 , B01J19/0066 , B01J19/0073 , B01J19/18 , B01J19/28 , B01J2219/00121 , B01J2219/00159 , C08F6/28 , Y02P20/149
摘要： A method for devolatilization of a thermoplastic polymer containing at least one volatile component which includes the following three steps: heating the thermoplastic polymer so that the thermoplastic polymer is a heated liquid or molten thermoplastic polymer, flowing the heated liquid thermoplastic polymer through a packed bed liquid-gas contactor by centrifugal force, and flowing a stripping gas through the packed bed countercurrent to the flow of the heated liquid thermoplastic polymer so that the volatile component volatilizes into the stripping gas from the heated liquid thermoplastic polymer by gas-liquid contacting in the packed bed; and an apparatus therefor.
摘要翻译： 一种用于使包含至少一种挥发性组分的热塑性聚合物脱挥发分的方法，其包括以下三个步骤：加热热塑性聚合物使得热塑性聚合物是加热液体或熔融的热塑性聚合物，使加热的液体热塑性聚合物流过填充床液体 通过离心力将气体接触器流动，并将汽提气体与加热的液体热塑性聚合物的流动逆流流动，使得挥发性组分从加热的液体热塑性聚合物中通过气 - 液接触包装而挥发成汽提气体 床; 及其装置。
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5.发明授权
公开(公告)号：US5455321A
公开(公告)日：1995-10-03
申请号：US327527
申请日：1994-10-21
CPC分类号： C08F12/04
摘要： A process for producing a monovinylidene aromatic polymer having molecular weight (Mw) greater than 275,000 which comprises polymerizing a monomer mixture comprising a monovinylidene aromatic monomer in the presence of:A) from 10 to 2000 ppm by weight of at least one free radical generating, branching polymerization initiator; andB) from 10 to 2000 ppm of one or more organic gel reduction agent selected from the group consisting of:1) mercaptans, terpenes, halocarbons and halohydrocarbons, such agent having up to 20 carbons,2) distillate recovered from the reaction devolatilization process (recycle), and3) mixtures of 1) and 2).
摘要翻译： 一种制备分子量（Mw）大于275,000的单亚乙烯基芳族聚合物的方法，该方法包括在以下存在下聚合包含单亚乙烯基芳族单体的单体混合物：A）10至2000ppm重量的至少一种产生自由基的自由基， 支化聚合引发剂; 和B）10至2000ppm的一种或多种选自以下的有机凝胶还原剂：1）硫醇，萜烯，卤代烃和卤代烃，这种具有最多20个碳的试剂，2）从反应脱挥发分过程中回收的馏出物 （循环），和3）1）和2）的混合物。
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公开(公告)号：US5453158A
公开(公告)日：1995-09-26
申请号：US209021
申请日：1994-03-10
IPC分类号： B01D1/22 , B01D3/06 , C08F2/00 , C08F6/00 , C08F6/10 , F28D1/06 , F28D7/00 , F28D9/00 , F28F3/08 , F28F13/08 , B01D1/00 , F28F13/00
CPC分类号： F28D9/0062 , B01D1/221 , B01D3/06 , C08F6/00 , F28D7/0041 , F28D9/0018 , F28F13/08 , F28F3/086 , Y10S159/10
摘要： An improved polymer devolatilization apparatus including a flat plate heater having a multiplicity of flat plates defining a plurality of channels, each channel having a substantially uniform height but varying width over its length, each channel including three zones:a first zone in operative communication with the polymer solution supply device, characterized by decreasing width as a function of distance from its beginning,a second zone beginning at the terminus of the first zone, characterized by at least one occurrence of a restrictive cross-sectional area, anda third zone beginning at the end of the second zone and terminating at a liquid/vapor collection and separation region operating at reduced pressure, said third zone characterized by increasing width as a function of distance from its beginning, and provided further that the ratio of maximum width of the third zone to the maximum width of the second zone is from 2:1 to 20:1.
摘要翻译： 一种改进的聚合物脱挥发装置，包括具有限定多个通道的多个平板的平板加热器，每个通道具有基本上均匀的高度但在其长度上具有变化的宽度，每个通道包括三个区域：与 聚合物溶液供应装置，其特征在于将宽度作为距离其开始的距离减小的宽度，从第一区域的末端开始的第二区域，其特征在于至少一次出现限制性横截面积，以及从第一区域开始的第三区域 第二区域的端部并且终止于在减压下操作的液体/蒸汽收集和分离区域，所述第三区域的特征在于增加宽度作为距其开始的距离的函数，并且还提供了第三区域的最大宽度的比率 区域到第二区域的最大宽度为2：1至20：1。
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7.发明授权
公开(公告)号：US5094807A
公开(公告)日：1992-03-10
申请号：US580023
申请日：1990-09-10
CPC分类号： C08F8/48 , C08F2800/10
摘要： A process for preparing glutarimide resins by the amidization and cycloimidization of methacrylate resins in the presence of a solvent characterized in that the solvent consists essentially of cyclohexanol.
摘要翻译： 在溶剂存在下通过甲基丙烯酸酯树脂的酰胺化和环化酰亚胺化制备戊二酰亚胺树脂的方法，其特征在于溶剂基本上由环己醇组成。
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