公开(公告)号：US20250115730A1

公开(公告)日：2025-04-10

申请号：US18729267

申请日：2023-01-27

Applicant: Dow Global Technologies LLC

Inventor： Yi Ye ,  Shrikant Dhodapkar ,  Joshua B. Gaubert ,  Matthew C. Simons ,  Michael J. Zogg, JR. ,  Michael D. Turner ,  Alec Y. Wang

IPC: C08J11/08 ,  B01D15/08 ,  B01D37/00

Abstract: Embodiments are directed towards methods for purifying a reclaimed polymer.

公开(公告)号：US20240199775A1

公开(公告)日：2024-06-20

申请号：US18553266

申请日：2022-03-28

Applicant: Dow Global Technologies LLC

Inventor： Carl N. Iverson ,  Thomas Wesley Karjala, JR. ,  Yi Jin ,  Michael J. Zogg, JR.

IPC: C08F210/06

CPC classification number: C08F210/06

Abstract: Methods of propylene polymerization incorporate bis biphenyl-phenoxy procatalysts favoring polypropylene isotacticity at elevated reactor temperatures. The methods include polymerizing propylene in the presence of a catalyst system to produce a propylene-based polymer. The catalyst system includes a metal-ligand complex selected from bis-biphenyl-phenoxy procatalysts. Polymerization reactions result in polypropylenes having greater than 90% isotacticity, as measured by percentages of isotactic triads, at reaction temperatures from 110° C. to 190 ° C. or from 160 ° C. to 190 ° C.

公开(公告)号：US20250129230A1

公开(公告)日：2025-04-24

申请号：US18729293

申请日：2023-01-27

Applicant: Dow Global Technologies LLC

Inventor： Yi Ye ,  Shrikant Dhodapkar ,  Joshua B. Gaubert ,  Matthew C. Simons ,  Michael J. Zogg, JR. ,  Michael D. Turner ,  Alec Y. Wang

IPC: C08J11/08

Abstract: Embodiments are directed towards methods for purifying a reclaimed polymer.

公开(公告)号：US20150148504A1

公开(公告)日：2015-05-28

申请号：US14404876

申请日：2013-03-08

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Sean W. Ewart ,  Teresa P. Karjala ,  Michael J. Zogg, JR. ,  Sarat Munjal

IPC: C08F110/02

CPC classification number: C08F110/02 ,  C08F2/38 ,  C08F4/34 ,  C08F4/52 ,  C08F2500/03 ,  C08F2500/10 ,  C08F2500/12 ,  C08F2500/08 ,  C08F2500/26

Abstract: The invention provides a process to form an ethylene-based polymer, said process comprising polymerizing ethylene in presence of at least the following: A) a free-radical agent; B) an alkylated phenol selected from Formula (I), wherein R1, R2, R3, R4 and R5 are each, independently, hydrogen or an alkyl; and C) a “metal alkyl-containing compound” selected from the group consisting of the following: i) at least one “Group II metal alkyl-containing compound,” ii) at least one “Group III metal alkyl-containing compound,” and iii) a combination of i) and ii).

Abstract translation: 本发明提供一种形成乙烯基聚合物的方法，所述方法包括在至少以下条件下聚合乙烯：A）自由基试剂; B）选自式（I）的烷基化苯酚，其中R 1，R 2，R 3，R 4和R 5各自独立地是氢或烷基; 和C）选自以下的“含金属烷基的化合物”：i）至少一种“第II族金属烷基化合物”，ii）至少一种“含III族金属烷基的化合物”， 和iii）i）和ii）的组合。

公开(公告)号：US20170129976A1

公开(公告)日：2017-05-11

申请号：US15318141

申请日：2014-06-12

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Brian W. Kolthammer ,  Michael J. Zogg, JR.

IPC: C08F210/16 ,  B01J2/00

CPC classification number: C08F210/16 ,  B01J2/00 ,  B29B9/065 ,  B29B9/12 ,  C08F2/06

Abstract: The instant invention provides an improved process for producing pelletized polymer compositions, and pelletized polymer compositions. The process for producing a pelletized polymer composition according to the present invention comprises: (1) polymerizing one or more alpha-olefins in one or more solution reactors thereby producing a molten polymer composition comprising one or more solvents; (2) removing at least a portion of said one or more solvents thereby forming a polymer composition having a low solvent content (typically less than 1,000 parts of solvent per million of polymer on a weight basis); (3) removing heat from said polymer composition having low solvent content to a temperature in the range of equal to or greater than the crystallization point of the polymer composition having low solvent content to less than or equal to a temperature in the range of from (the crystallization point of the polymer composition having low solvent content+20° C.) thereby forming a viscous polymer melt; and (4) pelletizing said viscous polymer melt via an underwater pelletizer thereby forming said pelletized polymer composition.

公开(公告)号：US20160282251A1

公开(公告)日：2016-09-29

申请号：US14915921

申请日：2014-11-25

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Alec Y. Wang ,  Curvel Hypolite ,  Jorge Rubalcaba ,  Michael J. Zogg, JR. ,  Job D. Guzman

IPC: G01N9/32 ,  C08F6/12

CPC classification number: G01N9/32 ,  C08F6/003 ,  C08F6/12 ,  C08L23/00

Abstract: The invention provides a method, and apparatus, for determining the degree of separation (DOS) of a polymer solution into a polymer-rich stream and a solvent-rich stream, said method comprising the following: adding to a liquid-liquid separation vessel the polymer solution, which comprises a polymer, a solvent and an anti-solvent; separating the polymer solution into a polymer-rich stream and a solvent-rich stream; removing at least some the polymer-rich stream from at least one outlet P on the vessel, and measuring the actual solution density of this polymer-rich stream using at least one flow meter; removing at least some of the solvent-rich stream from at least one other outlet S on the vessel, and measuring the actual density of the solvent-rich stream using at least one flow meter; and wherein the degree of separation (DOS) is determined by the following equation (Eqn. 1): DOS=[actual solution density (polymer-rich steam)−actual solution density (solvent-rich stream)]/[theoretical solution density (polymer-rich stream)−theoretical solution density (solvent-rich stream)] (Eqn. 1).

Abstract translation: 本发明提供了一种用于确定聚合物溶液进入富聚合物流和富溶剂流的分离程度（DOS）的方法和装置，所述方法包括以下步骤：向液 - 液分离容器中加入 聚合物溶液，其包含聚合物，溶剂和抗溶剂; 将聚合物溶液分离成富聚合物流和富溶剂流; 从容器中的至少一个出口P去除至少一些富含聚合物的流，并使用至少一个流量计测量该富聚合物流的实际溶液密度; 从容器中的至少一个其他出口S去除至少一些富溶剂流，并使用至少一个流量计测量富溶剂流的实际密度; 并且其中分离度（DOS）由以下等式（等式1）确定：DOS = [实际溶液密度（富含聚合物的蒸汽） - 实际溶液密度（富溶剂流）] / [理论溶液密度 富含聚合物的流） - 理论溶液密度（富溶剂流）]（方程式1）。