公开(公告)号：US20150344599A1

公开(公告)日：2015-12-03

申请号：US14367849

申请日：2012-12-10

Applicant: Dow Global Technologies LLC

Inventor： John O. Osby ,  Sean W. Ewart

IPC: C08F210/02

CPC classification number: C08F210/02 ,  C08F210/16 ,  C08F210/06 ,  C08F2500/11 ,  C08F2500/12 ,  C08F10/02 ,  C08F2/38 ,  C08F2220/283

Abstract: The invention provides an ethylene-based polymer formed from at least the following: ethylene and a monomeric chain transfer agent (monomeric CTA) selected from Structure 1: wherein L is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R1 is selected from hydrogen, a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon; R2 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; R3 is selected from hydrogen, a saturated hydrocarbon or a substituted saturated hydrocarbon; and R4 is selected from a saturated hydrocarbon, a substituted saturated hydrocarbon, an unsaturated hydrocarbon, or a substituted unsaturated hydrocarbon.

Abstract translation: 本发明提供由以下至少一种形成的乙烯类聚合物：乙烯和选自结构1的单体链转移剂（单体CTA）：其中L选自饱和烃，取代的饱和烃，不饱和烃或 取代的不饱和烃; R1选自氢，饱和烃，取代的饱和烃，不饱和烃或取代的不饱和烃; R2选自氢，饱和烃或取代的饱和烃; R3选自氢，饱和烃或取代的饱和烃; 并且R 4选自饱和烃，取代的饱和烃，不饱和烃或取代的不饱和烃。

公开(公告)号：US12269906B2

公开(公告)日：2025-04-08

申请号：US17631033

申请日：2020-07-27

Applicant: Dow Global Technologies LLC

Inventor： Arkady L. Krasovskiy ,  Yifan Y. Dong ,  Alexandra E. Frankel ,  Ivan A. Konstantinov ,  Sarat Munjal ,  Sean W. Ewart ,  Rajesh P. Paradkar ,  Daniel W. Baugh

IPC: C08F210/02 ,  C08F220/10 ,  C08F220/12 ,  C08F222/28

Abstract: The present disclosure provides an ethylene-based polymer. The ethylene-based polymer is formed from reacting, under polymerization conditions, ethylene monomer and bisallyl maleate (“BAIIM”). The present ethylene-based polymer with ethylene monomer and bisallyl maleate branching agent is interchangeably referred to as “BAIIM-PE.”

公开(公告)号：US20230227388A1

公开(公告)日：2023-07-20

申请号：US17999993

申请日：2021-05-27

Applicant: Dow Global Technologies LLC

Inventor： Michael A. Brammer ,  Sean W. Ewart ,  Wanglin Yu ,  Bruce D. Hook ,  Sally Demaio-Turner ,  Sung-Yu Ku ,  Yujun Liu ,  Jin Liu ,  Jianping Zeng

IPC: C07C31/125 ,  C07C47/02 ,  C07C29/74 ,  C07C29/34 ,  C07C29/17 ,  B01J31/18

CPC classification number: C07C31/125 ,  C07C47/02 ,  C07C29/74 ,  C07C29/34 ,  C07C29/172 ,  B01J31/185

Abstract: The present disclosure provides a process. In an embodiment, the process includes providing a purge stream composed of octene isomers. The process includes subjecting the purge stream to hydroformylation conditions, and forming a reaction product composed of nonanals.

公开(公告)号：US20230159844A1

公开(公告)日：2023-05-25

申请号：US17914564

申请日：2021-03-26

Applicant: Dow Global Technologies LLC

Inventor： David Koenigs ,  Sean W. Ewart ,  Troy E. Knight ,  Pritish M. Kamat ,  Lixin Sun ,  Roger L. Kuhlman

IPC: C10M107/10 ,  C10M125/04

CPC classification number: C10M107/10 ,  C10M125/04 ,  C10M2201/06 ,  C10M2205/0285 ,  C10N2010/08

Abstract: The present disclosure provides a drag reducing agent. In an embodiment, the drag reducing agent includes a polymer and a liquid carrier. The polymer is composed of one or more C6-C14 α-olefin monomers. The polymer includes a residual amount of zirconium. The polymer has an absolute weight average molecular weight (Mw(Abs)) greater than 1,300,000 g/mol and a (Mw(Abs)/Mn(Abs) from 1.3 to 3.0.

公开(公告)号：US20230125141A1

公开(公告)日：2023-04-27

申请号：US17914658

申请日：2021-03-26

Applicant: Dow Global Technologies LLC

Inventor： David Koenigs ,  Sean W. Ewart ,  Troy E. Knight

IPC: C08F4/64 ,  C08F110/14

Abstract: The present disclosure provides a process. In an embodiment, the process includes providing a purge stream containing octene monomer. The process includes contacting, under polymerization conditions, the purge stream with a bis-biphenylphenoxy catalyst, and forming an octene polymer having an absolute weight average molecular weight (Mw(Abs)) greater than 1,300,000 g/mol and a Mw(Abs)/Mn(Abs) from 1.3 to 3.0.

公开(公告)号：US20230121509A1

公开(公告)日：2023-04-20

申请号：US17914623

申请日：2021-03-26

Applicant: Dow Global Technologies LLC

Inventor： Sean W. Ewart ,  Sarat Munjal ,  Alexandra E. Frankel ,  Henk Hagen

IPC: C08F210/02

Abstract: The present disclosure provides a process. In an embodiment, the process includes introducing an antifoulant into an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hyper-compressor, a preheater and a polymerization reactor. The ethylene feed is located upstream of the hyper-compressor. The antifoulant consists of an inhibitor, molecular oxygen, and optionally a solvent. As the ethylene feed is located upstream of the hyper-compressor, the process includes introducing the antifoulant into the ethylene feed upstream of the hyper-compressor. The process further includes adding a free radical initiator to the polymerization reactor. The process further includes polymerizing the ethylene in the polymerization reactor under high pressure free-radical polymerization conditions, and forming an ethylene-based polymer.

公开(公告)号：US11608390B2

公开(公告)日：2023-03-21

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: C08F2/01 ,  C08F2/06 ,  C08F6/00 ,  C08F6/10 ,  C08L23/08 ,  B01J19/24

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：US20230056229A1

公开(公告)日：2023-02-23

申请号：US17779698

申请日：2020-11-11

Applicant: Dow Global Technologies LLC

Inventor： Arkady L. Krasovskiy ,  Ivan A. Konstantinov ,  Sarat Munjal ,  Sean W. Ewart

IPC: C08F290/06 ,  C08F110/02 ,  C08F10/02

Abstract: The present disclosure provides an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups. The ethylene-based polymer has a melt index (MI) from 0.1 to 1.0 g/10 min.

公开(公告)号：US20220185745A1

公开(公告)日：2022-06-16

申请号：US17631181

申请日：2020-07-07

Applicant: Dow Global Technologies LLC

Inventor： David Koenigs ,  Sean W. Ewart

IPC: C07C2/36 ,  C08F10/02

Abstract: A method for reducing fouling in an upgrading reactor that includes upgrading C2 to C4 hydrocarbons within the upgrading reactor in the presence of a fouling inhibitor having a particle size D50 of less than 100 μm and forming linear alpha olefins and polymer during the upgrading, wherein the fouling inhibitor changes the morphology of the polymer.

公开(公告)号：US20210002393A1

公开(公告)日：2021-01-07

申请号：US16977287

申请日：2019-03-25

Applicant: Dow Global Technologies LLC

Inventor： Evelyn Auyeung ,  Sean W. Ewart ,  Daniela Ferrari ,  Thomas Davidian ,  Rony Vanspeybroeck

IPC: C08F10/02

Abstract: A solution polymerization process for producing ethylene-based polymer includes introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into an entrance of a solution polymerization reactor. An ethylene-based polymer is produced by solution polymerizing the ethylene monomer in hydrocarbon solvent. Subsequently, a catalyst deactivator is introduced into the exit of the solution polymerization reactor, thereby producing hydrochloric acid byproduct. The catalyst deactivator includes long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with the exception of calcium. The catalyst deactivator reduces the effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride.