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    Polymerization process to make low density polyethylene
    51.
    发明授权
    Polymerization process to make low density polyethylene 有权
    聚合过程制备低密度聚乙烯

    公开(公告)号：US09534064B2

    公开(公告)日：2017-01-03

    申请号：US14980701

    申请日：2015-12-28

    Applicant: Dow Global Technologies LLC

    Inventor： Otto J. Berbee ,  Cornelis F. J. den Doelder ,  Cornelis J. Hosman

    IPC: C08F2/00 ,  C08F210/00 ,  C08F10/02 ,  C08F210/02 ,  C08F110/02

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F210/02 ,  C08F2/38 ,  C08F2/001 ,  C08F2500/11 ,  C08F2500/12 ,  C08F218/08 ,  C08F4/34

    Abstract: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions 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 operating at polymerization conditions, and, optionally, (2) freshly injecting, a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that at least one of the first reactor zone product and the freshly injected feed comprises a CTA system with a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1.

    Abstract translation: 形成乙烯基聚合物的高压聚合方法包括以下步骤：A.将包含链转移剂体系（CTA体系）和乙烯的第一种进料注入到在聚合条件下操作的第一高压釜反应器区域中以产生第一区 反应产物，具有转移活性Z1的第一反应器区域的CTA体系; （1）将至少部分第一区反应产物转移到选自第二高压釜反应器区或管式反应器区并在聚合条件下操作的第二反应器区，以及任选地（2）新鲜地注入， 第二进料到第二反应器区以产生第二区反应产物，条件是第一反应器区产物和新注入的进料中的至少一个包含具有Z 2的转移活性的CTA体系; 并且条件是Z1:Z2的比率大于1。

    PROCESSES TO IMPROVE REACTOR STABILITY FOR THE PREPARATION OF ETHYLENE-BASED POLYMERS USING ASYMMETRICAL POLYENES
    52.
    发明申请
    PROCESSES TO IMPROVE REACTOR STABILITY FOR THE PREPARATION OF ETHYLENE-BASED POLYMERS USING ASYMMETRICAL POLYENES 有权
    使用不对称聚酯制备基于乙烯的聚合物来提高反应器稳定性的方法

    公开(公告)号：US20160304643A1

    公开(公告)日：2016-10-20

    申请号：US15101347

    申请日：2014-12-23

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： Christopher R. Eddy ,  John O. Osby ,  Sean W. Ewart ,  Sarat Munjal ,  Stefan Hinrichs ,  Otto J. Berbee

    IPC: C08F210/02

    CPC classification number: C08F210/02 ,  C08F2220/282 ,  C08F2220/281 ,  C08F2/38

    Abstract: The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene and at least one asymmetrical polyene, comprising an “alpha, beta unsaturated—carbonyl end” and a “C—C double bond end,” and wherein the polymerization takes place in the presence of at least one free-radical initiator, and wherein the polymerization takes place 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; and wherein at least one chain transfer agent (CTA) is added to the polymerization, and wherein the CTA is a saturated hydrocarbon or an unsaturated hydrocarbon.

    Abstract translation: 本发明提供一种形成乙烯基聚合物的方法，所述方法包括聚合乙烯和至少一种不对称多烯，其包含“α，β不饱和羰基末端”和“C-C双键末端”，其中 在至少一种自由基引发剂的存在下进行聚合，并且其中聚合在包括至少两个反应区，反应区1和反应区i（i≥2）的反应器构型中进行，其中反应区i为 在反应区1的下游; 并且其中向所述聚合中加入至少一种链转移剂（CTA），并且其中所述CTA为饱和烃或不饱和烃。

    Polymerization Process to Make Low Density Polyethylene
    54.
    发明申请
    Polymerization Process to Make Low Density Polyethylene 有权

    公开(公告)号：US20160115256A1

    公开(公告)日：2016-04-28

    申请号：US14980701

    申请日：2015-12-28

    Applicant: Dow Global Technologies LLC

    Inventor： Otto J. Berbee ,  Cornelis F.J. de Doelder ,  Cornelis J. Hosman

    IPC: C08F10/02

    CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F210/02 ,  C08F2/38 ,  C08F2/001 ,  C08F2500/11 ,  C08F2500/12 ,  C08F218/08 ,  C08F4/34

    Abstract: A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions 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 operating at polymerization conditions, and, optionally, (2) freshly injecting, a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that at least one of the first reactor zone product and the freshly injected feed comprises a CTA system with a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1.

    Ethylene-Based Interpolymers and Processes to Make the Same
    55.
    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。

    ETHYLENE-BASED POLYMERS WITH NEW DISTRIBUTIONS OF TERMINAL AND INTERNAL UNSATURATIONS
    57.
    发明申请
    ETHYLENE-BASED POLYMERS WITH NEW DISTRIBUTIONS OF TERMINAL AND INTERNAL UNSATURATIONS 审中-公开

    公开(公告)号：US20200231712A1

    公开(公告)日：2020-07-23

    申请号：US16634914

    申请日：2018-07-13

    Applicant: Dow Global Technologies LLC

    Inventor： Otto J. Berbee ,  Stefan Hinrichs ,  Bharat I. Chaudhary ,  Teresa P. Karjala ,  John O. Osby ,  Jose Ortega

    IPC: C08F2/01 ,  C08F10/02

    Abstract: A high pressure, free radical polymerization process to form an ethylene-based polymer, the process comprising at least the following step: polymerizing a reaction mixture comprising ethylene, using a polymerization system comprising the following: (A) a reactor configuration comprising at least one reactor that comprises at least two reaction zones, a first reaction zone (reaction zone 1) and an ith reaction zone (where i≥2); wherein the ith reaction zone is the last reaction zone, and wherein i is the total number of reaction zones; (B) at least two ethylene-based feed streams, a first ethylene-based feed stream and an nth ethylene-based feed stream, wherein the first ethylene-based feed stream is sent to the first reaction zone, and the nth ethylene-based feed stream is the last ethylene based feed stream sent to the reactor configuration; wherein n≤i; and RZn/RZ1 does not equal 1.0, where RZ1=mole fraction of make-up ethylene in the first ethylene-based feed stream to the first reaction zone; where RZn=mole fraction of make-up ethylene in the last ethylene-based feed stream sent to the reactor configuration; (C) a control system to control the percentage of the make-up ethylene in the first ethylene-based feed stream, and the percentage of the make-up ethylene in the nth ethylene-based feed stream; and wherein at least one reaction zone receives a CTA make-up feed stream comprising an alpha-olefin, and wherein the alpha-olefin has a chain transfer activity constant (Cs) value ≤0.10, and wherein the chain transfer activity constant (Cs) is measured at 1360 atm, 130° C.

    Process to Make High Density Ethylene-Based Polymer Compositions with High Melt Strength
    58.
    发明申请
    Process to Make High Density Ethylene-Based Polymer Compositions with High Melt Strength 审中-公开

    公开(公告)号：US20200087492A1

    公开(公告)日：2020-03-19

    申请号：US16470853

    申请日：2017-11-29

    Applicant: Dow Global Technologies LLC

    Inventor： Cornelis F.J. Den Doelder ,  Carmelo Declet Perez ,  Otto J. Berbee ,  Hayley A. Brown

    IPC: C08L23/06 ,  C08J3/12 ,  B29B9/06

    Abstract: A process for producing a composition comprising A) an ethylene-based polymer that has a density greater than, or equal to, 0.940 g/cc, and B) an ethylene homopolymer formed by polymerizing a reaction mixture comprising ethylene, using a free-radical, high pressure polymerization process includes adding component (A) to a molten stream of component (B) after component (B) exits the separator and before component (B) is solidified in the pelletizer. A polymerization configuration for producing the composition includes at least one reactor, at least one separator, at least one pelletizer, and a device used to feed component (A), in the molten state, to a molten stream of component (B) before the pelletizer. The composition has a ratio of the melt strength of the composition to the melt strength of component (B) is greater than or equal to 1.04 and a density of greater than 0.920 g/cc.

    HIGH PRESSURE, FREE RADICAL POLYMERIZATIONS TO PRODUCE ETHYLENE-BASED POLYMERS
    60.
    发明申请
    HIGH PRESSURE, FREE RADICAL POLYMERIZATIONS TO PRODUCE ETHYLENE-BASED POLYMERS 审中-公开

    公开(公告)号：US20190292279A1

    公开(公告)日：2019-09-26

    申请号：US16302806

    申请日：2017-06-22

    Applicant: Dow Global Technologies LLC

    Inventor： Cornelis J F Hosman ,  Nhi T. Y. Dang ,  Otto J. Berbee ,  Joaquin Flores

    IPC: C08F10/02 ,  C08F2/01 ,  C08F2/34 ,  C08F6/00 ,  B01J3/04 ,  B01J3/02

    Abstract: A high pressure polymerization, as described herein, to form an ethylene-based polymer, comprising the following steps: polymerizing a reaction mixture comprising ethylene, using a reactor system comprising at least three ethylene-based feed streams and a reactor configuration that comprises at least four reaction zones, and at least one of the following a) through c), is met: (a) up to 100 wt % of the ethylene stream to the first zone comes from a high pressure recycle, and/or up to 100 wt % of the last ethylene stream to a zone comes from the output from a Primary compressor system; and/or (b) up to 100 wt % of the ethylene stream to first zone comes from the output from a Primary compressor system, and/or up to 100 wt % of the last ethylene stream to a zone comes from a high pressure recycle; and/or (c) the ethylene stream to the first zone, and/or the last ethylene stream to a zone, each comprises a controlled composition; and wherein each ethylene stream to a zone receives an output from two or more cylinders of the last compressor stage of a Hyper compressor system.

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