Translucent thermoplastic composition, method for making the composition and articles molded there from
    2.
    发明申请
    Translucent thermoplastic composition, method for making the composition and articles molded there from 有权
    半透明热塑性组合物,制备组合物的方法和在其上成型的制品

    公开(公告)号:US20060014919A9

    公开(公告)日:2006-01-19

    申请号:US10783140

    申请日:2004-02-20

    IPC分类号: C08G64/00

    摘要: A thermoplastic composition comprising a matrix of a polycarbonate polymer in which are embedded polysiloxane domains with an average domain size between 20 and 45 nanometers. Said compositions can be obtained by combining a first polycarbonate/poly(diorganosiloxane) copolymer; with a second polycarbonate/poly(diorganosiloxane) copolymer. A range of translucencies are obtainable by varying the relative amounts of the two copolymers without substantial loss in impact properties.

    摘要翻译: 一种热塑性组合物,其包含聚碳酸酯聚合物的基质,其中嵌入的聚硅氧烷域的平均域尺寸为20至45纳米。 所述组合物可以通过组合第一聚碳酸酯/聚(二有机硅氧烷)共聚物; 与第二聚碳酸酯/聚(二有机硅氧烷)共聚物。 可以通过改变两种共聚物的相对量而不会在冲击性能方面实质上损失来获得一系列透明性。

    Method of producing polycarbonate in a flash devolatilization system
    3.
    发明授权
    Method of producing polycarbonate in a flash devolatilization system 有权
    在闪蒸脱挥发分系统中生产聚碳酸酯的方法

    公开(公告)号:US07632913B2

    公开(公告)日:2009-12-15

    申请号:US11863723

    申请日:2007-09-28

    IPC分类号: C08G6/00 C08G63/02

    摘要: The present invention provides a reactor system for producing polycarbonate. The reactor system has one or more reactant vessels, an oligomerization reactor, a first pressure control device, a preheater, a second pressure control device, a distributor, and a flash tank. The one or more reactant vessels contain reactants contain a melt transesterification catalyst, a dihydroxy compound, and an activated diaryl carbonate. The reactor system is connected in the following configuration: (i) the one or more reactant vessels connected to the oligomerization reactor, (ii) the first pressure control device disposed between and connecting the outlet of the oligomerization reactor and the inlet of the preheater; (iii) the second pressure control device disposed between and connecting the outlet of the preheater and the distributor; and (iv) the distributor disposed at the inlet to the flash tank. The pressure in the preheater is controllable at a pressure intermediate between the pressure in the oligomerization reactor and the flash tank.

    摘要翻译: 本发明提供了一种用于生产聚碳酸酯的反应器系统。 反应器系统具有一个或多个反应物容器,低聚反应器,第一压力控制装置,预热器,第二压力控制装置,分配器和闪蒸罐。 一个或多个反应物容器包含含有熔体酯交换催化剂,二羟基化合物和活化的碳酸二芳基酯的反应物。 反应器系统以如下结构连接:(i)连接到低聚反应器的一个或多个反应容器,(ii)设置在低聚反应器的出口和预热器入口之间并连接低聚反应器的出口的第一压力控制装置; (iii)所述第二压力控制装置设置在所述预热器和所述分配器之间并连接所述预热器的出口; 和(iv)布置在闪蒸罐的入口处的分配器。 预热器中的压力可以在低聚反应器和闪蒸罐中的压力之间的压力下控制。

    Method of Producing Polycarbonate in a Flash Devolatilization System
    6.
    发明申请
    Method of Producing Polycarbonate in a Flash Devolatilization System 有权
    在闪蒸脱挥发系统中生产聚碳酸酯的方法

    公开(公告)号:US20090088538A1

    公开(公告)日:2009-04-02

    申请号:US11863723

    申请日:2007-09-28

    IPC分类号: C08F2/01 B01J19/00 C08G64/00

    摘要: The present invention provides a reactor system for producing polycarbonate. The reactor system has one or more reactant vessels, an oligomerization reactor, a first pressure control device, a preheater, a second pressure control device, a distributor, and a flash tank. The one or more reactant vessels contain reactants contain a melt transesterification catalyst, a dihydroxy compound, and an activated diaryl carbonate. The reactor system is connected in the following configuration: (i) the one or more reactant vessels connected to the oligomerization reactor, (ii) the first pressure control device disposed between and connecting the outlet of the oligomerization reactor and the inlet of the preheater; (iii) the second pressure control device disposed between and connecting the outlet of the preheater and the distributor; and (iv) the distributor disposed at the inlet to the flash tank. The pressure in the preheater is controllable at a pressure intermediate between the pressure in the oligomerization reactor and the flash tank.

    摘要翻译: 本发明提供了一种用于生产聚碳酸酯的反应器系统。 反应器系统具有一个或多个反应物容器,低聚反应器,第一压力控制装置,预热器,第二压力控制装置,分配器和闪蒸罐。 一个或多个反应物容器包含含有熔体酯交换催化剂,二羟基化合物和活化的碳酸二芳基酯的反应物。 反应器系统以如下配置连接:(i)连接到低聚反应器的一个或多个反应容器,(ii)设置在低聚反应器的出口和预热器入口之间并连接低聚反应器的出口的第一压力控制装置; (iii)所述第二压力控制装置设置在所述预热器和所述分配器之间并连接所述预热器的出口; 和(iv)布置在闪蒸罐的入口处的分配器。 预热器中的压力可以在低聚反应器和闪蒸罐中的压力之间的压力下控制。

    Process for producing dihydroxy compounds using upflow reactor system
    10.
    发明授权
    Process for producing dihydroxy compounds using upflow reactor system 有权
    使用上流式反应器系统生产二羟基化合物的方法

    公开(公告)号:US07141640B2

    公开(公告)日:2006-11-28

    申请号:US10065357

    申请日:2002-10-08

    IPC分类号: C08G64/00

    摘要: An upflow reactor for the production of bisphenol A from acetone and phenol includes a vessel, a catalyst bed disposed within the vessel, and a reactant distribution/product collection system disposed within the vessel. The reactant distribution/product collection system includes a perforated distributor disposed at a lower end of the reactor. The reactant distribution/product collection system further includes a perforated collector disposed at an upper end of the reactor. A method for producing bisphenol A from acetone and phenol Includes Introducing the reacting mixture containing acetone and phenol to the distributor, directing it upward through the catalyst bed, and recovering the reacted acetone and phenol as bisphenol A together with other isomers and non reacted species. A method for avoiding catalyst bead carryover from the bed in an upflow reactor Includes receiving a product of the upflow reactor into the collector disposed at an upper end of the reactor through a screen with proper slit size.

    摘要翻译: 用于从丙酮和苯酚生产双酚A的向上流反应器包括容器,设置在容器内的催化剂床和设置在容器内的反应物分配/产物收集系统。 反应物分配/产物收集系统包括布置在反应器下端的穿孔分布器。 反应物分配/产物收集系统还包括设置在反应器上端的多孔收集器。 从丙酮和苯酚生产双酚A的方法包括将含有丙酮和苯酚的反应混合物引入分配器,将其向上引导通过催化剂床,并且将其作为双酚A与其它异构体和未反应的物质一起回收反应的丙酮和苯酚。 用于避免在上流式反应器中从床中催化剂珠粒携带的方法包括通过具有适当狭缝尺寸的筛网将上流反应器的产物接收到设置在反应器上端的收集器中。