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1. 发明授权

US11136419B2 Ethylene-based polymers with new distributions of terminal and internal unsaturations 有权
公开(公告)号：US11136419B2
公开(公告)日：2021-10-05
申请号：US16634914
申请日：2018-07-13
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Stefan Hinrichs , Bharat I. Chaudhary , Teresa P. Karjala , John O. Osby , Jose Ortega
IPC分类号： C08F2/01 , C08F10/02 , C08F210/02 , C08F2/38 , C08F2/00
摘要： 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.

2. 发明授权

US10815321B2 Methods for producing low volatile tubular low density ethylene-based polymers for clean extrusion coating processing 有权
公开(公告)号：US10815321B2
公开(公告)日：2020-10-27
申请号：US16095412
申请日：2017-04-21
申请人： Dow Global Technologies LLC
发明人： Cornelis F J Den Doelder , Stefan Hinrichs , Eva-Maria Kupsch , Otto J. Berbee , Rajesh P. Paradkar , Bernard A. Fehr , Carmelo Declet Perez
IPC分类号： C08F10/02 , C08J5/00 , C09D123/06 , C08F110/02
摘要： A process for producing an ethylene-based polymer comprises polymerizing, by the presence of at least one free-radical initiator and using a high pressure tubular polymerization process, a reaction mixture containing ethylene and at least one CTA system comprising one or more CTA components to produce the ethylene-based polymer. The free-radical initiator is dissolved in a solvent comprising a saturated hydrocarbon to form an initiator solution which is added to the polymerization using an initiator feed line to an initiator injection pump. At least 50 wt % of the solvent has i) a dry point of less than or equal to 160° C. and ii) an initial boiling point of greater than or equal to 100° C. The polymerization process has a ratio of inlet pressure to first peak temperature of less than or equal to 9 Bar/° C. At least one CTA make-up stream is fed into the polymerization process, wherein less than or equal to 30 wt % of the at least one CTA make-up stream comprises one or more saturated hydrocarbon CTA(s) with a maximum carbon atom number of 6 per molecule.

3. 发明申请

US20200317826A1 ETHYLENE-BASED POLYMERS FORMED BY HIGH PRESSURE FREE RADICAL POLYMERIZATIONS 审中-公开
公开(公告)号：US20200317826A1
公开(公告)日：2020-10-08
申请号：US16303880
申请日：2017-06-22
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Nhi T. Y. Dang , Cornelis J F Hosman , Joaquin Flores
IPC分类号： C08F2/38 , B01J8/06 , C08F10/02
摘要： A process to form an ethylene-based polymer, as described herein, in a tubular reactor system comprising at least three ethylene-based feeds, and at least four reaction zones, and where the weight ratio of “the ethylene-based feed to the second zone (EBF2)” to “the ethylene-based feed to the first zone (EBF1),” is from 0.50 to 1.10; and the weight ratio of “the ethylene-based feed to the third zone (EBF3)” to “the ethylene-based feed to the first zone (EBF1),” is from 0.40 to 2.50; in each zone, the polymerization takes place at a start temperature ≥135° C.; and (a) for three or more ethylene based feeds, the peak temperatures in the first and the second zones, are each from 200° C. to 250° C.; and/or (b) for four or more ethylene based feeds, the peak temperatures in the first, the second and the third zones, are each from 200° C. to 250° C.; and the differential in peak temperatures of the first three zones (TP1, TP2, TP3) meets at least one relationship described herein.

4. 发明授权

US10538652B2 Low density ethylene-based polymer compositions with high melt strength and mid-high density control 有权
公开(公告)号：US10538652B2
公开(公告)日：2020-01-21
申请号：US15820083
申请日：2017-11-21
申请人： Dow Global Technologies LLC
发明人： Cornelis F. J. Den Doelder , Karl Zuercher , Otto J. Berbee , Jian Wang , Teresa P. Karjala
IPC分类号： C08L23/08 , C08L23/06 , C09D123/06 , C08J9/00
摘要： The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and a second ethylene-based polymer, formed by a high pressure, free-radical polymerization process, such composition comprising the following properties: a) a melt index (I2) from 2.0 to 10 dg/min; b) a density from 0.922 to 0.935 g/cc; and wherein the second ethylene-based polymer is present in an amount from 60 to 95 weight percent, based on the sum of the weight of the first polymer and the second polymer; and wherein the second ethylene-based polymer has a density greater than, or equal to, 0.924 g/cc; and wherein the first ethylene-based polymer has a melt index less than 2.5 dg/min.

5. 发明申请

US20180319910A1 LOW DENSITY ETHYLENE-BASED POLYMERS WITH HIGH MELT STRENGTH 审中-公开
公开(公告)号：US20180319910A1
公开(公告)日：2018-11-08
申请号：US16028194
申请日：2018-07-05
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Cornelis F. J. Den Doelder , Teresa P. Karjala , Karl Zuercher , Jian Wang , Stefan Hinrichs
IPC分类号： C08F110/02 , C09D123/06 , C08L23/08 , C08L23/06 , C09D123/08 , C08F4/38
CPC分类号： C08F110/02 , C08L23/06 , C08L23/0815 , C08L23/0869 , C08L2205/02 , C08L2205/025 , C08L2207/066 , C09D123/06 , C09D123/0815 , C09D123/0869 , C08F2500/12 , C08F2500/11 , C08F4/38
摘要： The invention provides a composition comprising a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs) versus I2 relationship: Mw(abs)

6. 发明申请

US20180155457A1 High Pressure Free Radical Polymerization Process with Flexible Control of Molecular Weight Distribution 审中-公开
公开(公告)号：US20180155457A1
公开(公告)日：2018-06-07
申请号：US15738064
申请日：2016-06-24
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Cornelis JF Hosman , Sergio E. Goncalves , Stefan Hinrichs
IPC分类号： C08F2/34 , C08F2/01 , C08F210/02 , B05C17/005 , B01J12/00
摘要： Ethylene-based polymer, LDPE, is made in a high pressure polymerization process to comprising at least the step of polymerizing a reaction mixture comprising ethylene, using a reactor configuration comprising (A) at least two reaction zones, a first reaction zone (reaction zone 1) and an i reaction zone (reaction zone i where i>2), (B) at least two ethylene feed streams, each feed stream comprising a percentage of the total make-up ethylene fed to the polymerization process, in which a first ethylene feed stream is sent to reaction zone 1 and a second ethylene feed stream is sent to reaction zone i, and (C) a control system to control the percentage of the total make-up ethylene in the ethylene feed stream sent to reaction zone 1 and the percentage of the total make-up ethylene in the ethylene feed stream sent to reaction zone i.

7. 发明授权

US09944733B2 Ethylene-based polymers formed using asymmetrical polyenes 有权
公开(公告)号：US09944733B2
公开(公告)日：2018-04-17
申请号：US15100526
申请日：2014-12-23
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Christopher R. Eddy , Stefan Hinrichs , Sarat Munjal , John O. Osby
IPC分类号： C08F210/02 , C08L23/08 , C09D123/08 , C08F10/02
CPC分类号： C08F210/02 , C08F10/02 , C08L23/08 , C08L23/0869 , C08L2205/025 , C09D123/08 , C09D123/0869 , C08F110/02 , C08F2/38 , C08F2500/09 , C08F2500/11 , C08F2500/26 , C08F2220/287 , C08F4/34
摘要： A composition comprising an ethylene-based polymer, the ethylene-based polymer having the following properties: a) at least one incorporated structure derived from a polyene selected from the group consisting of i) through x), as described herein; and b) a Mw(abs) versus I2 relationship: Mw(abs)

8. 发明授权

US09809701B2 Low density ethylene-based compositions with improved melt strength, output, and mechanical properties 有权
公开(公告)号：US09809701B2
公开(公告)日：2017-11-07
申请号：US14889168
申请日：2014-05-21
申请人： Dow Global Technologies LLC
发明人： Cornelis F. J. den Doelder , Teresa P. Karjala , Otto J. Berbee , Lori L. Kardos
IPC分类号： C08L23/06 , C08L23/08 , C08J5/18
CPC分类号： C08L23/06 , C08J5/18 , C08J2323/06 , C08J2423/06 , C08L23/08 , C08L23/0807 , C08L23/0815 , C08L2203/16 , C08L2205/025 , C08L2207/04 , C08L2207/066
摘要： The invention provides a composition comprising the following: A) a first ethylene-based polymer, formed by a high pressure, free-radical polymerization process, and comprising the following properties: a) a Mw(abs)/Mw(GPC)

9. 发明申请

US20170114163A1 PROCESSES TO PREPARE ETHYLENE-BASED POLYMERS USING A DISTRIBUTION OF CARBON MONOXIDE 有权
公开(公告)号：US20170114163A1
公开(公告)日：2017-04-27
申请号：US15311527
申请日：2015-06-24
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Teresa P. Karjala , Stefan Hinrichs , James L. Cooper
IPC分类号： C08F210/02
CPC分类号： C08F210/02 , C08F22/105 , C08F222/1006 , C08F220/40 , C08F220/26 , C08F236/20 , C08F2/34 , C08F4/34 , C08F2/00
摘要： The invention provides a high pressure, free-radical polymerization process for polymerizing an ethylene-based polymer, said process comprising polymerizing ethylene, in a reactor configuration comprising a reactor with at least two reaction zones, a first reaction zone and a reaction zone located downstream from the first reaction zone; and wherein CO (carbon monoxide) is added to the reactor in at least one reaction zone located downstream from the first reaction zone, and wherein, less than, or equal to, 95 weight percent of the total amount of CO, is fed to the first reaction zone.

10. 发明授权

US09403928B2 Polymerization process to make low density polyethylene 有权
标题翻译：聚合过程制备低密度聚乙烯
公开(公告)号：US09403928B2
公开(公告)日：2016-08-02
申请号：US14262981
申请日：2014-04-28
申请人： Dow Global Technologies LLC
发明人： Otto J. Berbee , Cornelis Den Doelder , Egbert Nijhof , Mehmet Demirors , Sjoerd A. De Vries
IPC分类号： C08F220/06 , C08F10/02 , C08F110/02 , C08F210/02 , C08F218/08 , C08F220/18 , C08L23/06 , C09D123/06 , C08F210/16
CPC分类号： C08F220/06 , C08F10/02 , C08F110/02 , C08F210/02 , C08F210/16 , C08F218/08 , C08F220/18 , C08L23/06 , C08L2207/066 , C09D123/06 , C08F2/00 , C08F2500/08 , C08F2500/09 , C08F2500/12 , C08F2500/26 , C08F210/06
摘要： A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising ethylene and optionally a chain transfer agent system (CTA system) 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 the second reactor zone contains a CTA system having a transfer activity Z2; and with the proviso that the ratio of Z1/Z2 is less than 1.
摘要翻译：形成乙烯基聚合物的高压聚合方法包括以下步骤：A.将包含乙烯和任选的链转移剂体系（CTA体系）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中，以产生第一区域反应产物，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状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）新鲜地注入第二个进料到第二反应器区以产生第二区反应产物，条件是第二反应器区含有具有转移活性Z 2的CTA体系; 并且条件是Z1 / Z2的比率小于1。

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