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：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：US11555084B2

公开(公告)日：2023-01-17

申请号：US16956231

申请日：2018-12-19

Applicant: Dow Global Technologies LLC

Inventor： Sarat Munjal ,  Brian W. Kolthammer ,  Mehmet Demirors ,  Michael D. Turner ,  Joshua B. Gaubert ,  Yijian Lin

IPC: C08F210/16 ,  C08F2/01 ,  C08F4/64 ,  C08F2/00 ,  C08F2/06 ,  C08F4/655 ,  C08F4/659

Abstract: Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.

公开(公告)号：US20210079139A1

公开(公告)日：2021-03-18

申请号：US16956231

申请日：2018-12-19

Applicant: Dow Global Technologies LLC

Inventor： Sarat Munjal ,  Brian W. Kolthammer ,  Mehmet Demirors ,  Michael D. Turner ,  Joshua B. Gaubert ,  Yijian Lin

IPC: C08F210/16 ,  C08F2/00 ,  C08F2/01 ,  C08F2/06 ,  C08F4/64 ,  C08F4/655 ,  C08F4/659

Abstract: Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.