公开(公告)号：US20210214470A1

公开(公告)日：2021-07-15

申请号：US17059704

申请日：2019-05-30

Applicant: Dow Global Technologies LLC

Inventor： Maria Pollard ,  Robert D. Swindoll ,  Pradeep Jain ,  Alec Y. Wang ,  Jorge Rubalcaba ,  Shrikant Dhodapkar ,  Sean W. Ewart ,  Bradley K. Blanchard ,  George W. Haun, Jr. ,  Michael J. Zogg, Jr.

IPC: C08F2/06 ,  C08F2/01 ,  C08L23/08 ,  B01J19/24 ,  C08F6/00

Abstract: Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100° C. to 230° C., an outlet port temperature of 200° C. to 300° C., an inlet port pressure of 35 to 250 kgf/cm2 and an outlet port pressure of 20 to 200 kgf/cm2; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger.

公开(公告)号：US10465024B2

公开(公告)日：2019-11-05

申请号：US15736896

申请日：2016-06-24

Applicant: Dow Global Technologies LLC

Inventor： Otto J. Berbee ,  Stefan Hinrichs ,  Sean W. Ewart ,  John O. Osby

IPC: C08F210/02 ,  C08F110/02 ,  C08F2/01 ,  C08F2/38 ,  C08F10/02 ,  C08K5/07 ,  C08K5/101 ,  C08F2/00 ,  C08F210/16

Abstract: A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one monomeric chain transfer agent, 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 the 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.

公开(公告)号：US10336846B2

公开(公告)日：2019-07-02

申请号：US15574275

申请日：2016-05-09

Applicant: Dow Global Technologies LLC

Inventor： Sean W. Ewart ,  Susan G. Brown ,  Daniela Ferrari ,  Edward O. Madenjian ,  Gregory J. Brennan

IPC: C08F210/18 ,  C08F2/06 ,  C08F210/06 ,  C08F236/20 ,  C08F4/659

Abstract: The invention provides a process to form an ethylene/a-olefin interpolymer, comprising at least the following steps A) through C): A) polymerizing, in at least one reactor, at least one reaction mixture comprising ethylene and the a-olefin, in a solution polymerization, and in the presence of at least the following components I), II) and III): I) at least one compound of Structure 1, as described herein; II) at least one co-catalyst, as described herein; III) at least one compound of Structure 2, as described herein; B) separating the final polymer solution into at least a polymer-rich solution and a polymer-free solution; and optionally, at least a portion of the polymer-free solution is recycled back to the reactor; C) maintaining the level of the at least one compound of Structure 2 in the at least one reactor, from 100 ppm to 10,000 ppm, as described herein.

公开(公告)号：US10144898B2

公开(公告)日：2018-12-04

申请号：US15521663

申请日：2015-11-12

Applicant: Dow Global Technologies LLC

Inventor： Bryan Gutermuth ,  Sean W. Ewart ,  Jeffery S. Bradley ,  Otto J. Berbee

IPC: C10M135/36 ,  C08F2/38 ,  C10M133/40 ,  C10M129/14 ,  C08F210/02 ,  C08F220/06 ,  C08F220/16 ,  C08F120/06

Abstract: The invention provides a composition comprising at least the following: an oil, and at least one compound selected from Compounds 1 through 3, or a combination thereof, as described herein. The composition can be used to improve the high pressure, free-radical polymerizations of ethylene-based interpolymers, and to reduce polymer build-up in reciprocation devices throughout the process.

公开(公告)号：US20180171046A1

公开(公告)日：2018-06-21

申请号：US15736896

申请日：2016-06-24

Applicant: Dow Global Technologies LLC

Inventor： Otto J. Berbee ,  Stefan Hinrichs ,  Sean W. Ewart ,  John O. Osby

IPC: C08F210/02 ,  C08F2/00 ,  C08F2/01 ,  C08F2/38 ,  C08K5/07 ,  C08K5/101

CPC classification number: C08F210/02 ,  C08F2/001 ,  C08F2/01 ,  C08F2/38 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  C08F2500/11 ,  C08K5/07 ,  C08K5/101 ,  Y02P20/582 ,  C08F2/00

Abstract: A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one monomeric chain transfer agent, 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 the 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.

公开(公告)号：US20180148526A1

公开(公告)日：2018-05-31

申请号：US15574275

申请日：2016-05-09

Applicant: Dow Global Technologies LLC

Inventor： Sean W. Ewart ,  Susan G. Brown ,  Daniela Ferrari ,  Edward O. Madenjian ,  Gregory J. Brennan

IPC: C08F210/18

CPC classification number: C08F210/18 ,  C08F4/659 ,  C08F4/65908 ,  C08F4/65912 ,  C08F2400/02 ,  C08F4/64193 ,  C08F2/06 ,  C08F210/06 ,  C08F236/20 ,  C08F2500/03 ,  C08F2500/17 ,  C08F2500/09 ,  C08F2500/25

Abstract: The invention provides a process to form an ethylene/α-olefin interpolymer, comprising at least the following steps A) through C): A) polymerizing, in at least one reactor, at least one reaction mixture comprising ethylene and the α-olefin, in a solution polymerization, and in the presence of at least the following components I), II) and III): I) at least one compound of Structure 1, as described herein; II) at least one co-catalyst, as described herein; III) at least one compound of Structure 2, as described herein; B) separating the final polymer solution into at least a polymer-rich solution and a polymer-free solution; and optionally, at least a portion of the polymer-free solution is recycled back to the reactor; C) maintaining the level of the at least one compound of Structure 2 in the at least one reactor, from 100 ppm to 10,000 ppm, as described herein.

公开(公告)号：US20170260474A1

公开(公告)日：2017-09-14

申请号：US15521663

申请日：2015-11-12

Applicant: Dow Global Technologies LLC

Inventor： Bryan Gutermuth ,  Sean W. Ewart ,  Jeffery S. Bradley ,  Otto J. Berbee

IPC: C10M135/36 ,  C08F220/06 ,  C08F220/16 ,  C10M133/40 ,  C08F210/02

CPC classification number: C10M135/36 ,  C08F2/38 ,  C08F120/06 ,  C08F210/02 ,  C08F220/06 ,  C08F220/16 ,  C10M129/14 ,  C10M133/40 ,  C10M2203/1006 ,  C10M2207/023 ,  C10M2215/221 ,  C10M2219/108 ,  C10N2240/30 ,  Y02P20/582

Abstract: The invention provides a composition comprising at least the following: an oil, and at least one compound selected from Compounds 1 through 3, or a combination thereof, as described herein. The composition can be used to improve the high pressure, free-radical polymerizations of ethylene-based interpolymers, and to reduce polymer build-up in reciprocation devices throughout the process.

公开(公告)号：US09751964B2

公开(公告)日：2017-09-05

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: C08F2/00 ,  C08F20/06 ,  C08F210/00 ,  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 I and reaction zone i (i>2), wherein reaction zone I is downstream from reaction zone I; 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.

公开(公告)号：US20170137550A1

公开(公告)日：2017-05-18

申请号：US15310553

申请日：2015-07-23

Applicant: Dow Global Technologies LLC

Inventor： Sean W. Ewart ,  Richard J. Keaton ,  Jerzy Klosin ,  Ruth Figueroa

IPC: C08F210/16

CPC classification number: C08F210/16 ,  B01J31/2226 ,  C07F7/00 ,  C07F7/003 ,  C08F4/65904 ,  C08F4/65925 ,  C08F4/65927 ,  C08F10/00 ,  C08F4/64193 ,  C08F2500/02 ,  C08F2500/08 ,  C08F2500/17

Abstract: The invention provides a process, and transition metal complex, to form an ethylene-based polymer, said process comprising polymerizing ethylene, and optionally at least one comonomer, in the presence of at least one molecular transition metal complex selected from Formula 1, as described herein.

公开(公告)号：US20160297904A1

公开(公告)日：2016-10-13

申请号：US15100483

申请日：2014-12-23

Applicant: DOW GLOBAL TECHNOLOGIES LLC

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

IPC: C08F210/02

CPC classification number: C08F210/02 ,  C09D123/04 ,  Y02P20/582 ,  C08F2220/281 ,  C08F2220/282 ,  C08F2/01

Abstract: A process to form an ethylene-based polymer including polymerizing ethylene and at least one asymmetrical polyene comprising an “alpha, beta unsaturated-carbonyl end” (“α,β unsaturated-carbonyl end”) and a “C—C double bond end,” 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.

Abstract translation: 一种形成乙烯类聚合物的方法，包括聚合乙烯和至少一种包含“α，β不饱和羰基端”（“α，β不饱和羰基端”）和“C-C双键末端”的不对称多烯， “其中聚合在存在至少一种自由基引发剂的情况下进行; 并且其中所述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在反应区1的下游。