公开(公告)号：US11059913B2

公开(公告)日：2021-07-13

申请号：US16631119

申请日：2018-07-02

Applicant: Dow Global Technologies LLC

Inventor： Michael J. Zogg, Jr. ,  Santosh S. Bawiskar ,  Yi Jin ,  Daniel S. Rynearson ,  Harold W. Boone ,  Kate R. Brown ,  Barry D. Kluge, Jr.

IPC: C08F2/04 ,  C08F2/01 ,  C08F10/02 ,  C08F10/06 ,  B29B9/10

Abstract: A process to form an olefin-based polymer, said process comprising at least the following steps: a) polymerizing a reaction mixture comprising an olefin, in at least one reactor, in a solution polymerization, to form a polymer solution; b) feeding at least a portion of the polymer solution through at least one devolatilizer, to form the olefin-based polymer, in melt form; c) feeding at least a portion of the olefin-based polymer, in melt, form through a heat exchanger, and then into a pastillation apparatus to form polymer particles.

公开(公告)号：US10858463B2

公开(公告)日：2020-12-08

申请号：US15318141

申请日：2014-06-12

Applicant: DOW GLOBAL TECHNOLOGIES LLC

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

IPC: B29B9/06 ,  C08F210/16 ,  B01J2/00 ,  B29B9/12

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：US10365195B2

公开(公告)日：2019-07-30

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 ,  C08F6/00 ,  C08F6/12

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).

公开(公告)号：US09328180B2

公开(公告)日：2016-05-03

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: C08F2/38 ,  C08F4/00 ,  C08F4/44 ,  C08F4/28 ,  C08F210/00 ,  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各自独立地为氢或烷基; 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。