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    POLYMER PRODUCTION UNDER SUPERSOLUTION CONDITIONS
    26.
    发明公开
    POLYMER PRODUCTION UNDER SUPERSOLUTION CONDITIONS 审中-公开
    聚合物生产条件下的解决方案SUPER

    公开(公告)号：EP2125913A1

    公开(公告)日：2009-12-02

    申请号：EP08728791.8

    申请日：2008-02-01

    Applicant: ExxonMobil Chemical Patents Inc. ,  ExxonMobil Research and Engineering Company

    Inventor： BRANT, Patrick ,  KISS, Gabor ,  FRIEDERSDORF, Chris, B. ,  LATTNER, James, R. ,  CASTY, Gary, L.

    IPC: C08F10/06 ,  C08F2/06 ,  C08F4/659

    CPC classification number: C08F10/06 ,  C08F110/06 ,  C08F210/06 ,  C08F4/64144 ,  C08F2/06 ,  C08F2500/03 ,  C08F2500/20 ,  C08F210/08 ,  C08F210/16

    Abstract: This invention relates to a process to polymerize olefins comprising contacting propylene, at a temperature of 65° C to 150° C and a pressure of 1.72 to 34.5 MPa, with: 1) a catalyst system comprising one or more activators and one or more nonmetallocene metal-centered, heteroaryl ligand catalyst compounds, where the metal is chosen from the Group 4, 5, 6, the lanthanide series, or the actinide series of the Periodic Table of the Elements, 2) optionally one or more comonomers selected from ethylene and C4 to C 12 olefins, 3) diluent or solvent, and 4) optionally scavenger, wherein: a) the olefin monomers and any comonomers are present in the polymerization system at 30 wt% or more, b) the propylene is present in the feed at 80 wt% or more, c) the polymerization occurs at a temperature above the so lid- fluid phase transition temperature of the polymerization system and a pressure greater than 1 MPa below the cloud point pressure of the polymerization system, and d) the polymerization occurs: (1) at a temperature below the critical temperature of the polymerization system, or (preferably and) (2) at a pressure below the critical pressure of the polymerization system.

    IN SITU CATALYST REGENERATION/ACTIVATION PROCESS
    27.
    发明公开
    IN SITU CATALYST REGENERATION/ACTIVATION PROCESS 审中-公开
    在原位法再生和激活催化剂

    公开(公告)号：EP1446226A2

    公开(公告)日：2004-08-18

    申请号：EP02803155.7

    申请日：2002-10-15

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： SOLED, Stuart, Leon ,  BAUMGARTNER, Joseph, Ernest ,  KISS, Gabor

    IPC: B01J38/00

    CPC classification number: C10G2/332 ,  B01J23/94 ,  B01J23/96 ,  B01J38/10 ,  B01J38/12 ,  C10G2/00 ,  C10G2/333

    Abstract: An in situ process for conducting regeneration of spent hydrocarbon synthesis catalyst. Regenerated, but not yet re-activated, catalyst (15) may be introduced into an operating HCS reactor (1) that has catalyst rejuvenation means (14). Any combination of a fresh, activated catalyst, a fresh, passivated catalyst or short-term or long-term deactivated catalysts may already be present in the HCS reactor (1). The regenerated, but not yet re-activated catalyst is activated in the HCS reactor (1) with rejuvenation means (14) at normal process conditions. The HCS reactor (1) receives syngas through the inlet line (3) and releases liquid hydrocarbons through outlet line (4) and gaseous hydrocarbon and unreacted syngas through the offgas line (2). Catalyst is removed from the HCS reactor (1) through the slipstream line (5) and into a filtration unit (6) which is fed with a stripping fluid (7). The filtered catalyst proceeds to the regeneration unit (9) which is fed a regenerative fluid (10). The regenerated catalyst is returned to the HCS Reactor (1) through the catalyst return line (11) where it is reactivated.

    POLYMERIZATION PROCESSES FOR BROADENED MOLECULAR WEIGHT DISTRIBUTION
    29.
    发明公开
    POLYMERIZATION PROCESSES FOR BROADENED MOLECULAR WEIGHT DISTRIBUTION 有权
    用于扩大分子量分布的聚合工艺

    公开(公告)号：EP2279212A1

    公开(公告)日：2011-02-02

    申请号：EP09750961.6

    申请日：2009-05-20

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： KISS, Gabor ,  REYNOLDS, Robert, Patrick, Jr. ,  CHU, John, W. ,  BRANT, Patrick ,  LATTNER, James, R.

    IPC: C08F2/01

    CPC classification number: C08F10/00 ,  C08F110/06 ,  C08F2/06 ,  C08F2/01 ,  C08F2500/04

    Abstract: Provided are methods of producing polymers with broadened molecular weight and/or composition distribution in a continuous homogeneous polymerization system utilizing reactor temperature gradients, reactor polymer concentration gradients, monomer concentration gradients, catalyst concentration gradients, and combinations thereof in the polymerization reactor. Such methods are particularly suitable when utilizing metallocene catalysts and other single-site catalysts, which generally produce polymers with narrow molecular weight and composition distribution.

    Abstract translation: 提供了在聚合反应器中利用反应器温度梯度，反应器聚合物浓度梯度，单体浓度梯度，催化剂浓度梯度及其组合分布在连续均相聚合体系中生产具有更宽的分子量和/或组成分布的聚合物的方法。 当使用茂金属催化剂和其它单中心催化剂时，这些方法是特别合适的，其通常产生具有窄分子量和组成分布的聚合物。

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