公开(公告)号：US11976140B2

公开(公告)日：2024-05-07

申请号：US17279708

申请日：2019-10-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： David F Sanders ,  Matthew W. Holtcamp ,  Kevin A. Stevens ,  Joshua P Olson

IPC: C08F210/16 ,  B01J8/00 ,  B01J8/22 ,  C08F2/01 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/02

CPC classification number: C08F10/02 ,  B01J8/004 ,  B01J8/22 ,  C08F2/01 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  B01J2208/00548 ,  B01J2208/00787 ,  B01J2208/00849

Abstract: A process for polymerizing polyethylene is disclosed. The process comprises contacting ethylene and at least one comonomer with a catalyst system to produce a polyolefin. The first catalyst and at least a portion of the second catalyst are co-supported to form a commonly-supported catalyst system. The catalyst system is introduced to a line as a dry-feed. The line is coupled with a polymerization reactor. A carrier fluid is added to the line to form a slurry. The slurry is introduced to the polymerization reactor.

公开(公告)号：US12091476B2

公开(公告)日：2024-09-17

申请号：US17279736

申请日：2019-10-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Kevin A. Stevens ,  David F Sanders ,  Matthew W. Holtcamp ,  Charles J. Harlan ,  Xuan Ye ,  Adriana S. Silva ,  Matthew S. Bedoya ,  Joshua P. Olson

IPC: C08F210/16 ,  C08F2/01 ,  C08F2/34 ,  C08F4/653 ,  C08F4/659 ,  C08F4/6592 ,  C08L23/08

CPC classification number: C08F2/34 ,  C08F2/01 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  C08L23/0815

Abstract: In an embodiment, a method for producing a polyolefin includes contacting a first composition and a second composition in in a line to form a third composition, wherein: the first composition comprises a contact product of a first catalyst, a second catalyst, a support, a first activator, and a diluent, wherein the mol ratio of second catalyst to first catalyst is from 60:40 to 40:60, the second composition comprises a contact product of the third catalyst, a second activator, and a second diluent, and the third composition comprises a mol ratio of the third catalyst to the second catalyst to the first catalyst of from 10:35:55 to 60:15:25, such as 30:20:30; introducing the third composition from the line into a gas-phase fluidized bed reactor; exposing the third composition to polymerization conditions; and obtaining a polyolefin.

公开(公告)号：US12043679B2

公开(公告)日：2024-07-23

申请号：US17279728

申请日：2019-10-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Kevin A. Stevens ,  David F Sanders ,  Matthew W. Holtcamp ,  Charles J. Harlan ,  Xuan Ye ,  Adriana S Silva ,  Matthew S. Bedoya ,  Joshua P. Olson

IPC: C08F2/01 ,  B01J8/18 ,  B01J8/24 ,  C08F2/34 ,  C08F4/00 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/16

CPC classification number: C08F2/34 ,  B01J8/1827 ,  B01J8/1872 ,  B01J8/24 ,  C08F2/01 ,  C08F4/65904 ,  C08F4/65925 ,  C08F210/16

Abstract: In an embodiment, a method for producing a polyolefin is provided. The method includes: contacting a first composition and a second composition in a line to form a third composition, wherein: the first composition comprises a contact product of a first catalyst, a second catalyst, a support, and a diluent, wherein the mol ratio of second catalyst to first catalyst is from 60:40 to 40:60, the second composition comprises a contact product of the second catalyst and a second diluent; introducing the third composition from the line into a gas-phase fluidized bed reactor; exposing the third composition to polymerization conditions; and obtaining a polyolefin.