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1. 发明授权

US10273318B2 Process to control output and quality of ethylene-based polymer formed by high pressure free radical polymerization 有权
公开(公告)号：US10273318B2
公开(公告)日：2019-04-30
申请号：US15527853
申请日：2015-12-18
申请人： Dow Global Technologies LLC , Dow Brasil Sudeste Industrial Ltda.
发明人： Cornelis J F Hosman , Otto J. Berbee , Sergio E. Goncalves , Nhi Dang
IPC分类号： C08F10/02 , C08F2/01 , C08F2/34 , C08F2/38
摘要： The invention provides a process to prepare an ethylene-based polymer, said process comprising polymerizing ethylene in the presence of at least one initiator system selected from the following: a) class 1 initiator system, b) class 2 initiator system, c) class 3 initiator system, or d) a combination thereof; and at a inlet pressure (P2) greater than, or equal to, 1000 Bar (100 MPa); and in a reactor system comprising at least one hyper compressor and a reactor configuration comprising at least one reactor, which comprises at least one reaction zone; and wherein the inlet pressure (P2) is reduced by at least 200 Bar, as compared to a similar polymerization, in the same reactor system, except it is operated at a higher inlet pressure (P1), and at a different hyper compressor throughput, and at a different maximum temperature for at least one reaction zone, and optionally, at a different amount of CTA system fed to the reactor configuration; and wherein, for the process, the “Ratio of total reactor consumption of the highest temperature class initiator system(s) (Y)” meets the following Equation D: 0.95*x^((P1−P2)/10 MPa)

2. 发明授权

US10494457B2 High pressure, free radical polymerizations to produce ethylene-based polymers 有权
公开(公告)号：US10494457B2
公开(公告)日：2019-12-03
申请号：US15769296
申请日：2016-11-10
申请人： Dow Global Technologies LLC , Dow Brasil Sudeste Industrial Ltda.
发明人： Otto J. Berbee , Cornelis J F Hosman , Joaquin Flores , Sergio E. Goncalves , Sarat Munjal , Michael E. Bishop , Luiz Rodriguez
IPC分类号： C08F10/02 , C08F2/01 , C08F2/38 , C08F110/02 , B01J19/00 , B01J19/18
CPC分类号： C08F10/02 , B01J19/0013 , B01J19/1812 , C08F2/01 , C08F2/38 , C08F110/02 , B01J2219/00159 , B01J2219/00162 , B01J2219/00763 , Y02P20/582 , C08F110/02 , C08F2/00 , C08F110/02 , C08F2/38 , C08F110/02 , C08F2500/12 , C08F2500/09 , C08F2500/10 , C08F2500/04
摘要： A process to form an ethylene-based polymer, said process comprising at least the following: polymerizing a mixture comprising ethylene, in the presence of at least one free-radical initiator, and in a reactor configuration comprising at least three reaction zones and at least two ethylene feed streams; and wherein the inlet pressure of the first reaction zone is less than, or equal to, 3200 Bar; and wherein the amount of ethylene, and optionally one or more comonomers, and optionally one or more CTAs, fed to the first reaction zone is from 40 mole % to 80 mole %, based on the total moles of ethylene, and optionally one or more comonomers, and optionally one or more CTAs, fed to the polymerization; and wherein the average polymerization temperature of the first 40 wt % polymer formed (APT40 wt %) (based on the total amount of polymer formed) is less than, or equal to, 200° C.

3. 发明申请

US20180346613A1 PROCESS TO CONTROL OUTPUT AND QUALITY OF ETHYLENE-BASED POLYMER FORMED BY HIGH PRESSURE FREE RADICAL POLYMERIZATION 审中-公开
公开(公告)号：US20180346613A1
公开(公告)日：2018-12-06
申请号：US15527853
申请日：2015-12-18
申请人： Dow Global Technologies LLC , Dow Brasil Sudeste Industrial Ltda.
发明人： Cornelis J F Hosman , Otto J. Berbee , Sergio E. Goncalves , Nhi T. Y. Dang
IPC分类号： C08F10/02
CPC分类号： C08F10/02 , C08F2/01 , C08F2/34 , Y02P20/582
摘要： The invention provides a process to prepare an ethylene-based polymer, said process comprising polymerizing ethylene in the presence of at least one initiator system selected from the following: a) class 1 initiator system, b) class 2 initiator system, c) class 3 initiator system, or d) a combination thereof; and at a inlet pressure (P2) greater than, or equal to, 1000 Bar (100 MPa); and in a reactor system comprising at least one hyper compressor and a reactor configuration comprising at least one reactor, which comprises at least one reaction zone; and wherein the inlet pressure (P2) is reduced by at least 200 Bar, as compared to a similar polymerization, in the same reactor system, except it is operated at a higher inlet pressure (P1), and at a different hyper compressor throughput, and at a different maximum temperature for at least one reaction zone, and optionally, at a different amount of CTA system fed to the reactor configuration; and wherein, for the process, the “Ratio of total reactor consumption of the highest temperature class initiator system(s) (Y)” meets the following Equation D: 0.95*x̂((P1−P2)/10 MPa)

4. 发明申请

US20180305476A1 HIGH PRESSURE, FREE RADICAL POLYMERIZATIONS TO PRODUCE ETHYLENE-BASED POLYMERS 审中-公开
公开(公告)号：US20180305476A1
公开(公告)日：2018-10-25
申请号：US15769296
申请日：2016-11-10
申请人： Dow Global Technologies LLC , Dow Brasil Sudeste Industrial Ltda.
发明人： Otto J. Berbee , Cornelis J F Hosman , Joaquin Flores , Sergio E. Goncalves , Sarat Munjal , Michael E. Bishop , Luiz Rodriguez
IPC分类号： C08F10/02 , C08F110/02 , C08F2/38 , C08F2/01 , B01J19/18 , B01J19/00
CPC分类号： C08F10/02 , B01J19/0013 , B01J19/1812 , B01J2219/00159 , B01J2219/00162 , B01J2219/00763 , C08F2/01 , C08F2/38 , C08F110/02 , Y02P20/582 , C08F2/00 , C08F2500/12 , C08F2500/09 , C08F2500/10 , C08F2500/04
摘要： A process to form an ethylene-based polymer, said process comprising at least the following: polymerizing a mixture comprising ethylene, in the presence of at least one free-radical initiator, and in a reactor configuration comprising at least three reaction zones and at least two ethylene feed streams; and wherein the inlet pressure of the first reaction zone is less than, or equal to, 3200 Bar; and wherein the amount of ethylene, and optionally one or more comonomers, and optionally one or more CTAs, fed to the first reaction zone is from 40 mole % to 80 mole %, based on the total moles of ethylene, and optionally one or more comonomers, and optionally one or more CTAs, fed to the polymerization; and wherein the average polymerization temperature of the first 40 wt % polymer formed (APT40 wt %) (based on the total amount of polymer formed) is less than, or equal to, 200° C.

5. 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.

6. 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.

7. 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.

8. 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.

9. 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)

10. 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.

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