Propylene oligomerization process
    5.
    发明申请
    Propylene oligomerization process 有权
    丙烯低聚过程

    公开(公告)号:US20080064911A1

    公开(公告)日:2008-03-13

    申请号:US11518372

    申请日:2006-09-08

    IPC分类号: C07C4/04

    CPC分类号: C07C2/12 Y02P20/127

    摘要: A process for the oligomerization of propylene is disclosed wherein MCM-22 zeolite prepared as a distillation structure is used in a reaction distillation zone under conditions of temperature and pressure to concurrently react the propylene to produce oligomers thereof and separate the oligomer products from unreacted propylene by fractional distillation in a distillation column reactor. Compared to the prior art tubular or plug flow reactors, lower temperatures and pressures are used to produce higher conversions and selectivities to preferred isomeric forms.

    摘要翻译: 公开了一种用于丙烯低聚的方法,其中作为蒸馏结构制备的MCM-22沸石在温度和压力的条件下用于反应蒸馏区,以同时使丙烯反应生成其低聚物,并将低聚物产物与未反应的丙烯分离 在蒸馏塔反应器中进行分馏。 与现有技术的管状或活塞式流动反应器相比,使用较低的温度和压力来产生较高的转化率和选择性以获得优选的异构形式。

    Production of polymerization grade dicyclopentadiene
    10.
    发明授权
    Production of polymerization grade dicyclopentadiene 失效
    生产聚合级二环戊二烯

    公开(公告)号:US5401891A

    公开(公告)日:1995-03-28

    申请号:US169847

    申请日:1993-12-17

    摘要: A process for purifying crude dicyclopentadiene which comprises the steps of: cracking the crude dicyclopentadiene to form a monomeric-containing effluent which comprises at least one monomer selected from the group consisting of: C.sub.4 acyclic dienes, C.sub.5 acyclic dienes, cyclopentadiene and methylcyclopentadiene; separating the monomeric-containing effluent into a cyclopentadiene-enriched stream and a cyclopentadiene-poor stream; dimerizing the cyclopentadiene-enriched stream to form a dimerizer effluent; contacting a membrane separator under pervaporation conditions with the dimerizer effluent wherein the C.sub.4 acyclic dienes, C.sub.5 acyclic dienes and cyclopentadiene permeate through the membrane separator and wherein a dicyclopentadiene product having a purity of at least about 98% is retained as retentate.

    摘要翻译: 一种用于纯化粗二环戊二烯的方法,其包括以下步骤:裂解粗二环戊二烯以形成含单体的流出物,其包含至少一种选自以下的单体:C 4无环二烯,C5无环二烯,环戊二烯和甲基环戊二烯; 将含单体的流出物分离成富含环戊二烯的流和不饱和环戊二烯流; 使富含环戊二烯的流二聚化以形成二聚体流出物; 使膜分离器在渗透蒸发条件下与二聚化器流出物接触,其中C4无环二烯,C5无环二烯和环戊二烯渗透通过膜分离器,并且其中保留纯度至少为约98%的二环戊二烯产物作为保留物。