公开(公告)号：US20210054121A1

公开(公告)日：2021-02-25

申请号：US17045732

申请日：2019-05-19

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bruce J. Savatsky ,  Ryan W. Impelman ,  David F. Sanders

IPC: C08F210/16 ,  B01J19/06 ,  B01J19/24

Abstract: Methods for scale-up from a pilot plant to a larger production facility of a bimodal polymer product having a density, a melt index and melt index ration are provided herein.

公开(公告)号：US11618793B2

公开(公告)日：2023-04-04

申请号：US17444094

申请日：2021-07-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Michael D. Lucas ,  Anne Bernard-Brunel ,  Ryan W. Impelman ,  Keng-Hua Beh ,  Diwaker Singh, Sr. ,  Rui Hoong Chong ,  Corrine L. Brandl ,  Luis A. Sotomayor

IPC: C08F210/02

Abstract: Gas phase polymerization processes include contacting an input stream comprising a monomer and an induced condensing agent in the presence of an inert gas with a catalyst in a fluidized bed reactor to produce a polymer, unreacted monomer, and an output gas; recycling a recycle stream of the unreacted monomer from the reactor to the input stream; venting at least a portion of the output gas from the reactor; and maintaining a partial pressure of the inert gas in the reactor above a reference inert gas pressure to decrease losses of the recycle stream with the vented output gas. The processes may include controlling the inert gas partial pressure to vary the total reactor pressure up to the maximum safe pressure, without causing carry-over of product polymer.

公开(公告)号：US20190144575A1

公开(公告)日：2019-05-16

申请号：US16152458

申请日：2018-10-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Adriana S. Silva ,  Matthew W. Holtcamp ,  David F. Sanders ,  Ryan W. Impelman ,  Richard E. Pequeno ,  Charles J. Harlan ,  Xuan Ye ,  Dongming Li ,  Matthew S. Bedoya

IPC: C08F210/16 ,  C08J5/18

Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.

公开(公告)号：US12152095B2

公开(公告)日：2024-11-26

申请号：US17310700

申请日：2020-03-04

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bruce J. Savatsky ,  Brian R. Greenhalgh ,  Joseph A. Moebus ,  Aaron C. McGinnis ,  Ryan W. Impelman ,  Anne A. Bernard-Brunel

IPC: C08F210/16 ,  B01J8/18 ,  B01J19/00 ,  B01J19/24 ,  C08F2/34 ,  C08F10/02 ,  C08F110/02 ,  C08F210/06 ,  C08F210/08

Abstract: The present disclosure relates to processes for production of polyolefins from olefin monomer(s) in a gas phase reactor using condensing agent(s) (CAs), and in particular relates to controlling condensed phase cooling in a gas phase reactor used to polymerize olefin monomer(s). The method may include introducing first and second condensing agent(s) into the reactor at ratio(s) determined by ascertaining a stick limit for the first condensing agent, calculating an equivalence factor relating the first and second condensing agents, ascertaining total allowable condensing agent, and calculating amount of the first condensing agent removed and replaced by the second condensing agent. The method may further include calculating the dew point limit of a gas phase composition including olefin monomer(s) as well as the first and second condensing agents; and determining if introducing a mixture comprising the olefin monomer(s) and the condensing agent composition would exceed the calculated dew point limit.

公开(公告)号：US10927202B2

公开(公告)日：2021-02-23

申请号：US16152458

申请日：2018-10-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Adriana S. Silva ,  Matthew W. Holtcamp ,  David F. Sanders ,  Ryan W. Impelman ,  Richard E. Pequeno ,  Charles J. Harlan ,  Xuan Ye ,  Dongming Li ,  Matthew S. Bedoya

IPC: C08F210/16 ,  C08J5/18 ,  C08F4/659 ,  C08F4/6592

Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units and from 0 to 35 wt % of C3-C12 olefin comonomer derived units, based upon the total weight of the polyethylene composition are provided. The polyethylene compositions have a) an RCI,m of 100 kg/mol or greater and one or both of: b) a Tw1-Tw2 value of from −16 to −38° C.; and c) an Mw1/Mw2 value of at least 0.9. The polyethylene compositions may be used to manufacture articles such as films.

公开(公告)号：US20190144576A1

公开(公告)日：2019-05-16

申请号：US16152470

申请日：2018-10-05

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai Lue ,  Adriana S. Silva ,  Matthew W. Holtcamp ,  David F. Sanders ,  Ryan W. Impelman ,  Richard E. Pequeno ,  Charles J. Harlan ,  Xuan Ye ,  Dongming Li ,  Rohan A. Hule ,  Matthew S. Bedoya

IPC: C08F210/16 ,  C08J5/18

Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.

公开(公告)号：US12202917B2

公开(公告)日：2025-01-21

申请号：US17310699

申请日：2020-03-04

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bruce J. Savatsky ,  Brian R. Greenhalgh ,  Joseph A. Moebus ,  Aaron C. McGinnis ,  Ryan W. Impelman ,  Anne A. Bernard-Brunel

IPC: C08F2/34

Abstract: This disclosure relates to processes for producing polyolefins in a gas phase reactor using condensing agent(s) (CAs), and real-time calculation of the ratio of one type of CA to another CA within a CA composition. This disclosure provides methods for controlling condensed phase cooling in a gas phase reactor used to polymerize olefins. The polymerization may employ one or more polymerization catalysts to polymerize one or more olefin monomers, and may include introducing a first condensing agent and a second condensing agent in a ratio of first condensing agent to second condensing agent, which ratio is calculated by ascertaining a stick limit for a first condensing agent, calculating an equivalence factor relating the first condensing agent and a second condensing agent, ascertaining a total allowable condensing agent, and calculating a first amount of the first condensing agent removed and replaced by a second amount of the second condensing agent.

公开(公告)号：US11447587B2

公开(公告)日：2022-09-20

申请号：US17045732

申请日：2019-05-01

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Bruce J. Savatsky ,  Ryan W. Impelman ,  David F. Sanders

IPC: C08F210/16 ,  C08F2/34 ,  B01J19/24 ,  B01J19/06

Abstract: Methods for scale-up from a pilot plant to a larger production facility of a bimodal polymer product having a density, a melt index and melt index ratio are provided herein.

公开(公告)号：US20210395400A1

公开(公告)日：2021-12-23

申请号：US17279731

申请日：2019-10-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： David F. Sanders ,  Ryan W. Impelman ,  Matthew W. Holtcamp ,  Matthew S. Bedoya

IPC: C08F2/34 ,  C08F2/01 ,  C08F210/16 ,  C08K5/01 ,  C08F4/6592 ,  C08F4/659

Abstract: The present disclosure provides processes for polymerizing olefin(s). Methods can include contacting a first composition and a second composition in a line to form a third composition. The first composition can include a contact product of a first catalyst, a second catalyst, a support, a first activator, a mineral oil. The second composition can include a contact product of an activator, a diluent, and the first catalyst or the second catalyst. Methods can include introducing the third composition from the line into a gas-phase fluidized bed reactor, introducing a condensing agent to the line and/or the reactor, exposing the third composition to polymerization conditions, and/or obtaining a polyolefin.

公开(公告)号：US10899860B2

公开(公告)日：2021-01-26

申请号：US16204993

申请日：2018-11-29

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Adriana S. Silva ,  Matthew W. Holtcamp ,  Ryan W. Impelman ,  Richard E. Pequeno ,  Kevin A. Stevens ,  Charles J. Harlan ,  Xuan Ye

IPC: C08F210/16 ,  C08F2/34 ,  C08F2/38

Abstract: The present disclosure provides processes for polymerizing olefin(s). Methods can include contacting a first composition and a second composition in a line to form a third composition. The first composition can include a contact product of a first catalyst, a second catalyst, a support, a first activator, a mineral oil. The second composition can include a contact product of an activator, a diluent, and the first catalyst or the second catalyst. Methods can include introducing the third composition from the line into a gas-phase fluidized bed reactor, introducing a condensing agent to the line and/or the reactor, exposing the third composition to polymerization conditions, and/or obtaining a polyolefin. Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.