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68 条记录 (耗时 0.041 秒)

    Separation method of polymer powder and carrier gas
    52.
    发明授权
    Separation method of polymer powder and carrier gas 失效
    聚合物粉末和载气的分离方法

    公开(公告)号：US4729772A

    公开(公告)日：1988-03-08

    申请号：US936771

    申请日：1986-12-02

    申请人： Tadashi Asanuma ,  Yoshiyuki Funakoshi ,  Kaneo Ito ,  Akihiko Nakajima

    发明人： Tadashi Asanuma ,  Yoshiyuki Funakoshi ,  Kaneo Ito ,  Akihiko Nakajima

    IPC分类号： B04C5/14 ,  B01D45/12 ,  B04C5/00 ,  B04C5/15 ,  B04C5/18 ,  B04C5/185 ,  B04C9/00

    CPC分类号： B04C5/185 ,  B04C5/00 ,  B04C5/18 ,  B04C9/00 ,  B04C2009/002

    摘要： Polymer powder is separated from a carrier gas by separating the polymer powder from the carrier gas in a cyclone separator, drawing the thus-separated polymer powder through a bottom part of the separator into a hopper, feeding out the polymer powder by a rotary feeder from the hopper while controlling the revolution speed of the rotary feeder in accordance with the powder level in the hopper, and controlling the volume of a purge gas, which is introduced into a polymer powder guide extending between the separator and the hopper for the prevention of plugging thereof, in accordance with the revolution speed of the rotary feeder. The height of the top of the powder in the hopper is maintained at a predetermined constant level.

    摘要翻译： 通过在旋风分离器中将载体气体中的聚合物粉末分离出来，将聚合物粉末与载气分离，将由此分离的聚合物粉末通过隔板的底部拉入料斗，通过旋转进料器将聚合物粉末从 料斗，同时根据料斗中的粉末水平控制旋转进料器的转速，并控制吹扫气体的体积，该吹扫气体被引入到在隔板和料斗之间延伸的聚合物粉末导向件中以防止堵塞 根据旋转进给器的转速。 料斗中粉末顶部的高度保持在预定的恒定水平。

    Method of continuously operating a counter-flow washing column
    53.
    发明授权
    Method of continuously operating a counter-flow washing column 失效
    连续操作逆流洗涤塔的方法

    公开(公告)号：US4659755A

    公开(公告)日：1987-04-21

    申请号：US746848

    申请日：1985-06-20

    申请人： Tadashi Asanuma ,  Tatuo Ohoka ,  Yoshiyuki Funakoshi

    发明人： Tadashi Asanuma ,  Tatuo Ohoka ,  Yoshiyuki Funakoshi

    IPC分类号： C08F6/00 ,  B01J19/18 ,  B01J19/24 ,  C08F6/06 ,  C08F6/24 ,  C08F10/00

    CPC分类号： C08F6/24 ,  B01J19/1881 ,  B01J19/242 ,  B01J2219/00054 ,  B01J2219/00094

    摘要： The method of continuously operating a counter-flow washing column which is supplied with a slurry of solid polymer particles in a diluent from a continuous polymerization zone and with washing liquid for extracting wash slurry and introducing it into a heat tube to separate the vapor of the washing liquid and the solid polymer particles.The improvement involves controlling the extraction amount of the wash slurry from the column by means of:(i) controlling the quantity of heat added to the heat tube, and further(ii) controlling the amount of liquid to be separately introduced into the heat tube,said controls (i) and (ii) being determined by monitoring the amount of the slurry in the last one of reaction cells in the continuous polymerization zone and, on the basis of the monitored amount, determining the amount of extracted slurry.When larger fluctuations occur in the production of the amount of slurry in the continuous polymerization zone, further controls are made to prevent drastic fluctuations in the ascending viscosity of the washing liquid in the counter-flow washing column, on the basis of the differences between the amount of the vapor separated by the heat tube and the amount of the liquid separately introduced into the heat tube.

    摘要翻译： 连续操作反流洗涤塔的方法，其将来自连续聚合区的稀释剂中的固体聚合物颗粒的浆料供给到用于萃取洗涤浆料的洗涤液并将其引入热管中以分离出蒸气 洗涤液和固体聚合物颗粒。 改进之处在于：通过以下步骤控制洗涤浆液的提取量：（i）控制加热到热管中的热量，进一步（ii）控制分别引入热管的液体量 所述对照（i）和（ii）通过监测连续聚合区中最后一个反应池中的浆料的量并基于所监测的量确定提取的浆料的量来确定。 当在连续聚合区中浆料的量的产生中发生较大的波动时，进一步控制以防止逆流洗涤塔中的洗涤液的上升粘度的剧烈波动， 由热管分离出的蒸气量和分别引入热管的液体量。

    Molded articles of syndiotactic polypropylene and method for preparing same
    55.
    发明授权
    Molded articles of syndiotactic polypropylene and method for preparing same 失效
    间同立构聚丙烯的成型制品及其制备方法

    公开(公告)号：US5591817A

    公开(公告)日：1997-01-07

    申请号：US210082

    申请日：1994-03-18

    申请人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Tetusnosuke Shiomura

    发明人： Tadashi Asanuma ,  Tateyo Sasaki ,  Mitsuru Ito ,  Tetusnosuke Shiomura

    IPC分类号： C08J5/00 ,  B29C35/00 ,  B29C67/24 ,  B29C71/02 ,  B29K23/00 ,  B29K105/32 ,  C08F4/642 ,  C08F110/06 ,  C08F10/06

    CPC分类号： B29C67/24 ,  B29K2023/12 ,  B29K2995/0026 ,  C08F110/06 ,  Y10T428/26

    摘要： A molded article of a syndiotactic polypropylene having excellent transparency in which a melting point attributed to the polypropylene having the syndiotactic structure measured at a heating rate of 10.degree. C./minute by differential scanning thermal analysis is represented by a substantially single peak, the aforesaid molded article being prepared by heating, melting and then hot-molding a homopolymer of propylene or a copolymer of propylene and a small amount of another olefin, which have a substantially syndiotactic structure, or a mixture of the homopolymer or the copolymer and a small amount of a polypropylene having a substantially isotactic structure, followed by quenching, or, after these steps, additionally subjecting the above molded article to a heat treatment at a temperature of less than its melting point. A method for preparing the above molded article is also disclosed here.

    摘要翻译： 间隔立构聚丙烯的模塑制品具有优异的透明性，其中通过差示扫描热分析以10℃/分钟的加热速率测量的具有间同立构结构的聚丙烯的熔点由基本上单峰表示，上述 通过将具有基本上间同立构结构的丙烯或丙烯与少量的另一种烯烃的共聚物或均聚物或共聚物的混合物和少量的均聚物进行加热，熔融，然后热模塑， 的具有基本上全同立构结构的聚丙烯，然后淬火，或者在这些步骤之后，另外对上述模塑制品在低于其熔点的温度进行热处理。 此处也公开了制备上述模制品的方法。