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    POLYMER COMPOSITIONS HAVING IMPROVED PORPERTIES AS VISCOSITY INDEX IMPROVERS AND USE THEREOF IN LUBRICATING OILS
    2.
    发明公开
    POLYMER COMPOSITIONS HAVING IMPROVED PORPERTIES AS VISCOSITY INDEX IMPROVERS AND USE THEREOF IN LUBRICATING OILS 审中-公开
    具有改进的性质及其作为粘度油中聚合物组合物

    公开(公告)号：EP2809689A1

    公开(公告)日：2014-12-10

    申请号：EP12868988.2

    申请日：2012-12-28

    申请人： ExxonMobil Chemical Patents Inc. ,  Chevron Oronite Company LLC ,  Matsunaga, Phillip T. ,  Nass, Kirk A. ,  Patel, Pritesh A. ,  Kolb, Rainer ,  Datta, Sudhin

    发明人： MATSUNAGA, Phillip, T. ,  NASS, Kirk, A. ,  PATEL, Pritesh, A. ,  KOLB, Rainer ,  DATTA, Sudhin

    IPC分类号： C08F210/16

    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： 提供了用于制造聚合物组合物的方法，爱尤其是那些具有降低或无凝胶的形成中所确定的流变学和视觉测试和凝胶哪些是可用作粘度改进剂的润滑油。 在目标描述的方法通过在第一和/或第二聚合反应区调节氢气进料（S）的浓度来达到这个目的，优选检验做的（a）在第一聚合反应区中的氢气进料的浓度为0.0〜 1.0重量％，基于氢气的进料（S）的总重量计，乙烯单体，α-烯烃共聚单体，以及溶剂进入第一聚合反应区，和/或（b）在第二聚合反应区中的氢气进料的浓度为 氢0.0-0.5重量％，基于进料的（一个或多个），乙烯单体，α-烯烃共聚单体和溶剂的总重量计到第二聚合反应区。