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    PROCESS FOR MAKING ETHYLENE-BASED POLYMERS USING HYDROCARBON INITIATORS
    4.
    发明公开
    PROCESS FOR MAKING ETHYLENE-BASED POLYMERS USING HYDROCARBON INITIATORS 审中-公开
    工艺生产乙烯基聚合物使用烃引发

    公开(公告)号：EP3140327A1

    公开(公告)日：2017-03-15

    申请号：EP15723107.7

    申请日：2015-05-08

    申请人： Dow Global Technologies Llc

    发明人： EWART, Sean, W. ,  KARJALA, Teresa, P. ,  DEMIRORS, Mehmet ,  EDDY, Christopher, R.

    IPC分类号： C08F110/02 ,  C08F210/02 ,  C08F10/02

    CPC分类号： C08F110/02 ,  C08F10/02 ,  C08F4/00 ,  C08F210/02 ,  C08F220/18 ,  C08F218/08 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2500/04

    摘要： An ethylene-based polymer, e.g., LDPE, with a low dissipation factor is made by a process comprising the step of contacting at polymerization conditions ethylene and, optionally, one or more comonomers, e.g., an alpha-olefin, with at least one carbon-carbon (C—C) hydrocarbyl, free-radical initiator of Structure 1: wherein R1, R2, R3, R4, R5 and R6, are each, independently, hydrogen or a hydrocarbyl group and wherein, optionally, two or more R groups (R1, R2, R3, R4, R5 and R6) form a ring structure, with the provisos that at least one of R2 and R5, and at least one of R3 and R6 is a hydrocarbyl group of at least two carbon atoms, e.g., an alkaryl of at least seven carbon atoms.

    摘要翻译： 基于乙烯的聚合物，例如，LDPE，具有低耗散因数是通过包括在聚合条件下的乙烯接触，并且，任选地，一种或多种共聚单体，例如，α-烯烃的步骤的方法制成，具有至少一个羧酸 - 碳（C-C）烃基，结构式1的自由基引发剂：其中R1，R2，R3，R4，R5和R6，各自独立地是氢或烃基和worin任选两个或更多个基团R （R1，R2，R3，R4，R5和R6）形成环结构，条件没有R2和R5中的至少一个，和R 3中的至少一个和R 6是至少两个碳原子，例如烃基 在至少7个碳原子的烷芳基。

    IMPROVED PROCESS TO MAKE TUBULAR ETHYLENE BASED POLYMERS WITH HIGH G' AND BROAD MWD
    5.
    发明公开
    IMPROVED PROCESS TO MAKE TUBULAR ETHYLENE BASED POLYMERS WITH HIGH G' AND BROAD MWD 审中-公开
    改进的制备具有高G'和宽MWD的管式乙烯基聚合物的方法

    公开(公告)号：EP3313894A1

    公开(公告)日：2018-05-02

    申请号：EP16734846.5

    申请日：2016-06-23

    申请人： Dow Global Technologies LLC

    发明人： BERBEE, Otto, J. ,  HINRICHS, Stefan ,  EWART, Sean, W. ,  OSBY, John, O.

    IPC分类号： C08F2/01 ,  C08F2/38 ,  C08F10/02 ,  C08F210/02

    摘要： A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one symmetrical polyene and at least one chain transfer agent system comprising at least one chain transfer agent (CTA) in the presence of at least one free-radical initiator and in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≥2), wherein reaction zone i is downstream from reaction zone 1. The ratio of “the activity of the CTA system of the feed to the first reaction zone” to the “activity of the CTA system of the cumulative feed to the reaction zone i,” (Z1/Zi), is less than or equal to (0.8-0.2*log(Cs)), wherein Cs is from 0.0001 to 10.

    ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME
    6.
    发明公开
    ETHYLENE-BASED POLYMERS AND PROCESSES TO MAKE THE SAME 有权
    乙烯基聚合物在VERFAHREN ZU IHRER HERSTELLUNG

    公开(公告)号：EP2729504A1

    公开(公告)日：2014-05-14

    申请号：EP12731259.3

    申请日：2012-06-21

    申请人： Dow Global Technologies LLC

    发明人： EWART, Sean, W. ,  KARJALA, Teresa, P. ,  MUNJAL, Sarat ,  DEMIRORS, Mehmet

    IPC分类号： C08F10/02 ,  C08F4/34 ,  C08F2/38

    CPC分类号： C08F4/52 ,  C08F4/38 ,  C08F10/02 ,  C08F210/16 ,  C08L23/04 ,  C08F2/38 ,  C08F4/34 ,  C08L23/14 ,  C08L23/08 ,  C08F210/06 ,  C08F2500/08 ,  C08F2500/12 ,  C08F4/54

    摘要： The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene in the presence of at least one free-radical agent, and in the presence of a "metal alkyl-containing compound" selected from the group consisting of the following: i) at least one "Group II metal alkyl-containing compound," ii) at least one "Group III metal alkyl-containing compound," or iii) a combination of i) and ii). The invention also provides a composition comprising at least one ethylene-based polymer, prepared from a free-radical polymerization, and wherein the ethylene-based polymer has the following property: y > 0.28567x - 0.00032, wherein y = vinyl/1000C, as determined by 1H NMR, and x = mol% polymerized ?-olefin, as determined by 13C NMR. The invention also provides a composition comprising at least one ethylene-based polymer, prepared from a free-radical polymerization, and wherein the ethylene-based polymer has the following properties: A) a vinyl content greater than, or equal to, 0.3 vinyl per 1000 C (total carbons), and B) a polymerized alpha-olefin level less than, or equal to, 1.00 mole percent, based on the total moles of polymerized monomers.

    摘要翻译： 本发明提供一种形成乙烯基聚合物的方法，所述方法包括在至少一种自由基试剂存在下使乙烯聚合，并且在“含金属烷基化合物”存在下，选自 以下：i）至少一种“II族金属烷基化合物”，ii）至少一种“III族金属烷基化合物”，或iii）i）和ii）的组合。 本发明还提供一种组合物，其包含由自由基聚合制备的至少一种基于乙烯的聚合物，并且其中所述乙烯类聚合物具有以下性质：y> 0.28567x-0.00032，其中y =乙烯基/ 1000℃，为 通过1 H NMR测定，x = mol％聚合的α-烯烃，通过13 C NMR测定。