公开(公告)号：US20220025135A1

公开(公告)日：2022-01-27

申请号：US17309172

申请日：2019-11-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ching-Tai LUE ,  Dongming LI ,  Matthew F. YOTT ,  Arturo LEYVA ,  Adriana S. SILVA ,  Matthew W. HOLTCAMP ,  Ryan W. IMPELMAN ,  Richard E. PEQUENO ,  Laughlin G. MCCULLOUGH ,  Hasnain RANGWALLA ,  James M. FARLEY

IPC: C08J5/18 ,  C08L23/08

Abstract: Films produced with polyethylene blends having improved stiffness and heat sealing are provided herein. The films may have an average MD/TD 1% secant modulus greater than or equal to about 3300 psi. The films may also have a heat seal initiation temperature at 5 N of less than or equal to about 95° C. or a hot tack seal initiation temperature at 1 N of less than or equal to about 95° C.

公开(公告)号：US20190284310A1

公开(公告)日：2019-09-19

申请号：US16344173

申请日：2017-10-04

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Richard B. PANNELL ,  Ryan W. IMPELMAN

IPC: C08F2/01 ,  C08F210/16 ,  C08F210/06 ,  C08F2/34 ,  C08F4/6592 ,  C08F4/659

Abstract: A polymerization catalyst supply system is provided. The polymerization catalyst supply system can be used to prepare polyolefin polymers with multimodal or broad molecular weight distribution, or to prepare polyolefins having broad compositional distribution. A process for preparing polyolefin polymers using the polymerization catalyst supply system is also provided.

公开(公告)号：US20240066514A1

公开(公告)日：2024-02-29

申请号：US18263794

申请日：2022-03-01

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Valentin P. MUNOZ ,  Ryan W. IMPELMAN ,  Christian T. LUND ,  Chi-l KUO

IPC: B01J37/04 ,  C08F2/34 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/02

CPC classification number: B01J37/04 ,  C08F2/34 ,  C08F4/65904 ,  C08F4/65916 ,  C08F4/65927 ,  C08F10/02

Abstract: Processes for making and using slurry catalyst mixtures. In some embodiments, the process for making the slurry catalyst mixture can include introducing a mineral oil into a vessel. The mineral oil can be heated to a temperature of about 60° C. to about 80° C. to produce a heated mineral oil. A moisture concentration of the heated mineral oil can be reduced to produce a dried mineral oil. Catalyst particles can be introduced into the dried mineral oil to produce a mixture. The mixture can be agitated for at least 2 hours to remove at least a portion of any gas present within pores of the catalyst particles to produce the slurry catalyst mixture. The slurry catalyst mixture can be free of or include ≤1 wt % of any wax having a melting point, at atmospheric pressure, of ≥25° C., based on a total weight of the slurry catalyst mixture.

公开(公告)号：US20240059801A1

公开(公告)日：2024-02-22

申请号：US18260201

申请日：2022-01-10

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Ryan W. IMPELMAN ,  Bruce J. SAVATSKY ,  Richard E. PEQUENO ,  Xuan YE ,  Stacy N. APUGO

IPC: C08F2/34 ,  C08F2/01 ,  C08F210/14 ,  C08F4/659 ,  C08F4/6592

CPC classification number: C08F2/34 ,  C08F2/01 ,  C08F210/14 ,  C08F4/65904 ,  C08F4/65927 ,  C08F4/65916 ,  C08F4/65912

Abstract: Polymerization processes. In some embodiments, the polymerization process can include introducing a carrier fluid, an olefin, and a catalyst feed into a polymerization reactor, wherein the catalyst feed comprises one or more catalysts, a carrier liquid and optionally an induced condensing agent. In some embodiments, a combined amount of the carrier liquid and any induced condensing agent in the catalyst feed is ≥350 kg per mole of the one or more catalysts introduced into the polymerization reactor. The process can also include polymerizing the olefin in the presence of the catalyst within the polymerization reactor to produce a polymer product.

公开(公告)号：US20230173447A1

公开(公告)日：2023-06-08

申请号：US18161536

申请日：2023-01-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Shayan KARIMIPOUR ,  Ryan W. IMPELMAN ,  Sebastian CHIALVO ,  Gerardo CORONA

IPC: B01J8/18 ,  B01J8/24

CPC classification number: B01J8/1809 ,  B01J8/1827 ,  B01J8/24 ,  B01J8/1872 ,  B01J2208/00539 ,  B01J2208/00584 ,  B01J2208/00548 ,  B01J2208/00725 ,  B01J2208/00672 ,  B01J2208/00575

Abstract: Systems and methods useful in determining the superficial gas velocity in fluidized bed reactors may utilize a pressure drop across a portion of the system but not associated with a flowmeter. For example, method may comprise: obtaining a pressure for each of two different locations within a fluidized bed reactor system that comprises a reactor capable of containing a fluidized bed and a cycle gas loop, wherein one or both of the two different locations is not at a flowmeter; calculating a pressure drop based on the two pressures; calculating a first superficial gas velocity (SGValt) for the fluidized bed based on the pressure drop; and operating the fluidized bed reactor system based at least in part on the SGValt.

公开(公告)号：US20220119563A1

公开(公告)日：2022-04-21

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: C08F210/06 ,  C08F210/08 ,  C08F210/16 ,  C08F110/02 ,  B01J8/18 ,  B01J19/00 ,  B01J19/24

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：US20220098332A1

公开(公告)日：2022-03-31

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.