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    High pressure free-radical polymerizations
    1.
    发明授权
    High pressure free-radical polymerizations 有权

    公开(公告)号：US10457757B2

    公开(公告)日：2019-10-29

    申请号：US15574310

    申请日：2016-06-30

    Applicant: Dow Global Technologies LLC

    Inventor： Christopher R. Eddy ,  Jeffery S. Bradley ,  Otto J. Berbee ,  Sarat Munjal ,  Bryan Gutermuth

    IPC: C08F210/02 ,  B01J3/00 ,  B01J3/04

    Abstract: A process to form an ethylene-based polymer comprising, in polymerized form, ethylene and at least one acid comonomer, said process comprising polymerizing a reaction mixture comprising the ethylene and the acid comonomer, in a reactor configuration comprising at least one Secondary compressor, at least one pressurization device, and at least one reactor selected from the following: at least one autoclave reactor, at least one tubular reactor, or a combination thereof; and wherein the reaction mixture is polymerized in the presence of at least one free-radical initiator, and at a pressure of at least 1000 Bar; and wherein at least a portion of a comonomer composition comprising at least a portion of the acid comonomer used in the polymerization, is compressed, to form a compressed comonomer composition, in the pressurization device, up to a discharge pressure ranging from 1000 Bar to 4000 Bar, and at a discharge temperature (DT) from 10 C to 100 C; and wherein the compressed comonomer composition bypasses the Secondary compressor, and is fed, downstream from the Secondary compressor, into the reactor, and/or into one or more feed streams to the reactor.

    Ethylene-Based Interpolymers and Processes to Make the Same
    2.
    发明申请
    Ethylene-Based Interpolymers and Processes to Make the Same 审中-公开
    基于乙烯的共聚物和方法制造相同的方法

    公开(公告)号：US20150011708A1

    公开(公告)日：2015-01-08

    申请号：US14495029

    申请日：2014-09-24

    Applicant: Dow Global Technologies LLC

    Inventor： Otto J. Berbee ,  Roger G. Gagnon ,  Mark Jasek ,  Laura Nunez ,  Bryan Gutermuth

    IPC: C08F210/02 ,  C08L23/08 ,  C08J5/18

    CPC classification number: C08F210/02 ,  C08F2/01 ,  C08F110/02 ,  C08J5/18 ,  C08J2323/08 ,  C08J2423/06 ,  C08L23/08 ,  C08L2205/02 ,  C08F2/001 ,  C08F220/06 ,  C08F2500/11 ,  C08F2500/12 ,  C08F2/38 ,  C08F218/08

    Abstract: Ethylene-based interpolymers, e.g., ethylene-acrylic acid copolymers, are made by a process comprising the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone, and (2) at least one of transferring or freshly injecting a feed comprising a CTA system into the second reactor zone to produce a second zone reaction product, the CTA system of the second reactor zone having a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1. The comonomer comprises at least one carboxylic acid group or an anhydride group.

    Abstract translation: 基于乙烯的互聚物，例如乙烯 - 丙烯酸共聚物，通过包括以下步骤的方法制备：A.将包含链转移剂体系（CTA体系）和乙烯的第一种进料注入第一高压釜反应器区域，以产生 第一区反应产物，具有转移活性Z1的第一反应区的CTA体系; （1）将至少部分第一区域反应产物转移到选自第二高压釜反应器区或管状反应器区的第二反应器区，和（2）转移或新鲜地注入含有 CTA系统进入第二反应器区以产生第二区反应产物，第二反应器区的CTA体系具有Z2的转移活性; 并且条件是：Z1:Z2的比例大于1.共聚单体包含至少一个羧酸基团或酸酐基团。

    HIGH PRESSURE FREE-RADICAL POLYMERIZATIONS
    4.
    发明申请
    HIGH PRESSURE FREE-RADICAL POLYMERIZATIONS 审中-公开

    公开(公告)号：US20180134824A1

    公开(公告)日：2018-05-17

    申请号：US15574310

    申请日：2016-06-30

    Applicant: Dow Global Technologies LLC

    Inventor： Christopher R. Eddy ,  Jeffery S. Bradley ,  Otto J. Berbee ,  Sarat Munjal ,  Bryan Gutermuth

    IPC: C08F210/02 ,  B01J3/04

    CPC classification number: C08F210/02 ,  B01J3/00 ,  B01J3/04 ,  B01J3/042 ,  Y02P20/582 ,  C08F2/01 ,  C08F220/06

    Abstract: A process to form an ethylene-based polymer comprising, in polymerized form, ethylene and at least one acid comonomer, said process comprising polymerizing a reaction mixture comprising the ethylene and the acid comonomer, in a reactor configuration comprising at least one Secondary compressor, at least one pressurization device, and at least one reactor selected from the following: at least one autoclave reactor, at least one tubular reactor, or a combination thereof; and wherein the reaction mixture is polymerized in the presence of at least one free-radical initiator, and at a pressure of at least 1000 Bar; and wherein at least a portion of a comonomer composition comprising at least a portion of the acid comonomer used in the polymerization, is compressed, to form a compressed comonomer composition, in the pressurization device, up to a discharge pressure ranging from 1000 Bar to 4000 Bar, and at a discharge temperature (DT) from 10 C to 100 C; and wherein the compressed comonomer composition bypasses the Secondary compressor, and is fed, downstream from the Secondary compressor, into the reactor, and/or into one or more feed streams to the reactor.

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