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    Continuous slurry polymerization volatile removal
    1.
    发明申请
    Continuous slurry polymerization volatile removal 审中-公开
    连续淤浆聚合挥发性去除

    公开(公告)号：US20020182121A1

    公开(公告)日：2002-12-05

    申请号：US10147219

    申请日：2002-05-14

    申请人： Exxon Chemical Patents, Inc.

    发明人： James Austin Kendrick

    IPC分类号： C08F002/00 ,  C08F002/01

    CPC分类号： B01J8/005 ,  B01D3/06 ,  B01J8/003 ,  B01J8/0055 ,  B01J8/007 ,  B01J8/382 ,  B01J19/1837 ,  B01J2208/0007 ,  B01J2208/00539 ,  B01J2208/00761 ,  B01J2208/00769 ,  B01J2208/00867 ,  B01J2219/00006 ,  B01J2219/00103 ,  B01J2219/00114 ,  B01J2219/00191 ,  B01J2219/002 ,  B01J2219/00213 ,  B01J2219/00231 ,  B01J2219/00236 ,  B01J2219/0024 ,  C08F6/003 ,  C08F6/24 ,  C08F10/00 ,  C08F210/16 ,  C08F2/14 ,  C08F210/14

    摘要： A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slurry reactor through a discharge valve and transfer conduit into a first intermediate pressure flash tank with a conical bottom defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the slurry/polymer solids and an exit seal chamber of such diameter (d) and length (I) as to maintain a desired volume of concentrated polymer solids/slurry in the exit seal chamber such as to form a pressure seal while continuously discharging a plug flow of concentrated polymer solids/slurry bottom product of said first flash tank from the exit seal chamber through a seal chamber exit reducer with inclined sides defined by substantially straight sides inclined at an angle to that of horizontal equal to or greater than the angle of slide of the polymer solids which remain after removal of about 50 to 100% of the inert diluent therefrom to a second flash tank at a lower pressure.

    摘要翻译： 公开了一种用于从包含稀释剂，未反应单体和聚合物固体的聚合流出物连续分离包含稀释剂和未反应单体的液体介质的方法/装置，其包括通过排放阀将淤浆反应器的聚合流出物连续排出并将传输导管 具有锥形底部的第一中间压力闪蒸罐，该锥形底部由基本上直的侧面倾斜的水平面倾斜，该水平面等于或大于浆料/聚合物固体的滑动角度以及直径（d）的出口密封室， 长度（I），以便在出口密封室中保持所需体积的浓缩聚合物固体/浆料，以形成压力密封，同时连续地将所述第一闪蒸罐的浓缩聚合物固体/浆料底部产物的塞流从出口 密封室通过密封室出口减速器，斜面由基本上直的侧面i定义 以等于或大于在约50至100％的惰性稀释剂从其中移除至较低压力的第二闪蒸罐后保留的聚合物固体的滑动角度等于或大于水平角的角度倾斜。

    Bimetallocyclic transition metal catalyst systems
    6.
    发明授权
    Bimetallocyclic transition metal catalyst systems 失效
    双金属过渡金属催化剂体系

    公开(公告)号：US6143682A

    公开(公告)日：2000-11-07

    申请号：US473693

    申请日：1995-06-07

    申请人： Richard Allen Fisher

    发明人： Richard Allen Fisher

    IPC分类号： C08F4/642 ,  C08F4/619 ,  C08F4/62 ,  C08F4/659 ,  C08F4/6592 ,  C08F4/68 ,  C08F10/00 ,  B01J31/00 ,  B01J37/00 ,  C08F4/02 ,  C08F4/60

    CPC分类号： C08F10/00 ,  B01J2531/0205 ,  B01J2531/40 ,  B01J2531/50 ,  B01J2531/57 ,  B01J2531/58 ,  B01J31/143 ,  B01J31/1608 ,  B01J31/2265 ,  C08F2410/03 ,  C08F4/619 ,  C08F4/61908 ,  C08F4/61912

    摘要： This invention relates to single site catalyst systems comprising activated bimetallocyclic transition metal compounds, and the use of these catalyst systems for the polymerization of ethylenically and acetylenically unsaturated monomers. The bimetallocyclic compounds comprise two metal atoms, selected from the group consisting of Group 4 or Group 5 metal atoms, connected through two covalent bridging links so as to form a cyclic compound having delocalized bonding in the cyclic structure. The exemplary bimetallocyclic compound bis-M-(trimethylsilyl-methylidyne) tetrakis-(trimethylsilylmethyl) ditantalum activated with alumoxane and borate compounds is shown to be useful for preparing ethylene polymers having M.sub.n of at least 267,000 and MWD of about 2.3.

    摘要翻译： 本发明涉及包含活性双金属过渡金属化合物的单中心催化剂体系，以及这些催化剂体系用于烯属和炔属不饱和单体聚合的用途。 双金属环化合物包含通过两个共价桥连连接的选自第4族或第5族金属原子的两个金属原子，以形成在环状结构中具有离域键合的环状化合物。 显示出用铝氧烷和硼酸盐化合物活化的示例性双金属摩尔化合物双-M-（三甲基甲硅烷基 - 甲基亚乙基）四（三甲基甲硅烷基甲基）二钽，用于制备Mn至少为267,000，MWD为约2.3的乙烯聚合物。

    Process for increasing the selectivity of a reaction to convert oxygenates to olefins
    7.
    发明授权
    Process for increasing the selectivity of a reaction to convert oxygenates to olefins 有权
    提高将含氧化合物转化为烯烃的反应的选择性的方法

    公开(公告)号：US6137022A

    公开(公告)日：2000-10-24

    申请号：US333278

    申请日：1999-06-15

    申请人： Keith H. Kuechler ,  Hsiang-ning Sun ,  William Kuechler

    发明人： Keith H. Kuechler ,  Hsiang-ning Sun ,  William Kuechler

    IPC分类号： C07C1/20 ,  C07C1/26 ,  C07C1/32 ,  C07C1/00

    CPC分类号： C07C1/322 ,  C07C1/20 ,  C07C1/26 ,  C07C1/323 ,  C07C2529/85 ,  Y02P30/42

    摘要： Disclosed is a method of making an olefin product from an oxygenate feedstock comprising, contacting the feedstock in a reaction zone containing 15 volume percent or less of a catalyst, preferably a catalyst comprising a silicoaluminophosphate molecular sieve. In order to obtain the desired product content, i.e., an olefin product having a low level of by-products, conversion of the feedstock in the 15 volume percent or less reaction zone should be maintained between 80 wt % and 99 wt % at the conditions effective to convert 100 wt % of the feedstock when the reaction zone contains at least 33 volume percent of the catalyst material.

    摘要翻译： 公开了一种从含氧化合物原料制备烯烃产物的方法，包括在含有15体积％或更少的催化剂，优选包含硅铝磷酸盐分子筛的催化剂的反应区中使原料接触。 为了获得所需的产品含量，即具有低水平副产物的烯烃产物，原料在15体积％或更少的反应区中的转化率应保持在80重量％至99重量％之间的条件下 当反应区含有至少33体积％的催化剂材料时，有效地转化100重量％的原料。