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    PROCESS FOR THE PRODUCTION OF POLYMERIC COMPOSITIONS USEFUL AS OIL MODIFIERS
    2.
    发明公开
    PROCESS FOR THE PRODUCTION OF POLYMERIC COMPOSITIONS USEFUL AS OIL MODIFIERS 有权
    VERFAHREN ZUR HERSTELLUNG冯POLYMERZUSAMMENSETZUNGEN ZUR VERWENDUNG ALSÖLMODIFIKATOREN

    公开(公告)号：EP2809716A1

    公开(公告)日：2014-12-10

    申请号：EP12808623.8

    申请日：2012-12-13

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： KOLB, Rainer ,  MATSUNAGA, Phillip, T. ,  RAVISHANKAR, Periagaram, S. ,  STEFANIAK, Lisa, B. V. ,  COSTIN, Quintin, P.

    IPC分类号： C08L23/08

    CPC分类号： C08L23/0815 ,  C08F4/65908 ,  C08F4/65927 ,  C08F210/16 ,  C08L2205/025 ,  C08L2314/06 ,  C10M143/04 ,  C10M143/06 ,  C10M143/08 ,  C10M2205/022 ,  C10M2205/024 ,  C10M2205/026 ,  C10M2205/028 ,  C10N2230/02 ,  C10N2240/10 ,  C08F2/001 ,  C08F210/14 ,  C08F2500/12

    摘要： Provided are processes for making polymer compositions, especially those with reduced or no gel formation in lubricating oils as identified by rheological and visual gel tests and which are useful as viscosity modifiers. The processes described herein aim to achieve this objective by adjusting the concentrations of the hydrogen feed(s) in the first and/or second polymerization reaction zones, preferably such that (a) the hydrogen feed concentration in the first polymerization reaction zone is 0.0-1.0 wt %, based on total weight of feed(s) of hydrogen, ethylene monomer, a-olefin comonomer, and solvent into the first polymerization reaction zone, and/or (b) the hydrogen feed concentration in the second polymerization reaction zone is 0.0-0.5 wt %, based on total weight of feed(s) of hydrogen, ethylene monomer, a-olefin comonomer, and solvent into the second polymerization reaction zone.

    摘要翻译： 提供了制备聚合物组合物的方法，特别是在流变学和视觉凝胶测试中鉴定的润滑油中形成凝胶或没有凝胶形成的那些，并且它们可用作粘度调节剂。 本文所述的方法旨在通过调节第一和/或第二聚合反应区中的氢气进料的浓度来实现该目的，优选使得（a）第一聚合反应区中的氢气进料浓度为0.0- 1.0重量％，基于氢，乙烯单体，α-烯烃共聚单体和溶剂的进料的总重量进入第一聚合反应区，和/或（b）第二聚合反应区中的氢进料浓度为 0.0-5.5重量％，基于氢，乙烯单体，α-烯烃共聚单体和溶剂的进料的总重量进入第二聚合反应区。

    PROCESS FOR FORMING POLYALPHAOLEFIN DRAG REDUCING AGENTS AND COMPOSITION CONTAINING SAME
    9.
    发明授权
    PROCESS FOR FORMING POLYALPHAOLEFIN DRAG REDUCING AGENTS AND COMPOSITION CONTAINING SAME 失效
    用于生产POLYOLEFINSTRÖMUNGSVERBESSERERS及构成含有这些

    公开(公告)号：EP0888390B1

    公开(公告)日：2004-01-07

    申请号：EP97916059.5

    申请日：1997-03-19

    申请人： Energy & Environmental International, L.C.

    发明人： EATON, Gerald, B. ,  MONAHAN, Michael, J.

    IPC分类号： C08F10/00 ,  C08F2/08 ,  C09K3/00

    CPC分类号： F17D1/16 ,  C08F10/00 ,  C08F110/00 ,  C08F210/00 ,  C09K3/00 ,  C10L1/1641 ,  C10L1/165 ,  C10L1/1658 ,  C10M143/08 ,  C08F2/002 ,  C08F2/08 ,  C08F4/6493 ,  C08F2/005 ,  C08F2/42 ,  C08F4/6428 ,  C08F2500/12

    摘要： A composition including polyalphaolefins that function as drag reducing agents and a process for the preparation of polyalphaolefins that function as drag reducing agents are disclosed. The process includes contacting alphaolefin monomers with catalyst particles in a polymerization mixture that includes a hydrocarbon solvent. The polymerization of the alphaolefin monomers produces polyalphaolefin drag reducing agents having an inherent viscosity of at least 10 dL/g. During polymerization of the polyalphaolefin monomers, localized micelles compromising high molecular weight polyalphaolefin polymer are formed in micellar zones around the catalyst particles. The polymerization is conducted in the presence of a viscosity reducing agent that includes a substantially hydrophobic dispersant. The viscosity reducing agent is present in an amount sufficient to reduce the viscosity of the reaction mixture and disperse the localized micelles. The addition of the dispersant during the polymerization process provides for high molecular weight polyalphaolefin and a more uniform molecular weight distribution of the resulting polyalphaolefin. A process of forming a polyalphaolefin drag reducing agent in one or more polymerization reactors and a process for reducing drag in a conduit are also disclosed.