公开(公告)号：US20230391801A1

公开(公告)日：2023-12-07

申请号：US18249303

申请日：2021-11-17

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Francis C. RIX ,  Lubin LUO ,  Ky KA LE

IPC: C07F5/06 ,  C08F110/14 ,  C08F210/16

CPC classification number: C07F5/068 ,  C08F110/14 ,  C08F210/16

Abstract: A method including: contacting a support material including absorbed water with trimethylaluminum (TMA) in an aliphatic hydrocarbon; removing the aliphatic hydrocarbon by distillation at a pressure greater than or equal to 0.5 atm; heating, at a temperature ranging from about 25° C. to about 200° C., a reaction product of the support material and the TMA in a presence of TMA, wherein the TMA includes TMA in an amount of about 2-10 mmol TMA per gram of the support material in excess of an amount that reacts with the support material absorbed with water; and removing excess TMA.

公开(公告)号：US20230416418A1

公开(公告)日：2023-12-28

申请号：US18250438

申请日：2021-11-17

Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

Inventor： Nikola S. LAMBIC ,  Francis C. RIX ,  Lubin LUO ,  Charles J. HARLAN ,  An Ngoc-Michael NGUYEN

IPC: C08F4/6592 ,  C08F4/659 ,  C08F10/06 ,  C07F7/08

CPC classification number: C08F4/65927 ,  C08F4/65916 ,  C08F2420/10 ,  C08F10/06 ,  C07F7/081 ,  C08F4/65912

Abstract: The present disclosure provides aromatic-solvent-free supported catalyst compounds and catalyst systems comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. These supported catalyst compounds and catalyst systems can be used to prepare polymer comprising no aromatic solvent.

公开(公告)号：US20240092947A1

公开(公告)日：2024-03-21

申请号：US18253867

申请日：2021-11-17

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Lubin LUO ,  Francis C. RIX ,  Kevin A. Stevens ,  Chi-l KUO ,  Xiaodan ZHANG ,  Jacqueline A. LOVELL ,  Charles J. HARLAN ,  Xuan YE ,  Brian R. BERG

IPC: C08F4/659 ,  C08F10/06 ,  C08F10/14

CPC classification number: C08F4/65916 ,  C08F10/06 ,  C08F10/14

Abstract: The present disclosure relates to supported catalyst systems for olefin polymerization, catalyst system precursors, methods of producing the precursors and catalyst systems and polyolefins formed from the catalyst systems.

公开(公告)号：US20230406868A1

公开(公告)日：2023-12-21

申请号：US18249346

申请日：2021-11-17

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Francis C. RIX ,  KY KA LE ,  Charles J. HARLAN

IPC: C07F5/06 ,  C08F210/02 ,  C08F2/34 ,  C08F4/659

CPC classification number: C07F5/068 ,  C08F210/02 ,  C08F2/34 ,  C08F4/65912 ,  C01P2004/61 ,  C01P2006/14 ,  C01P2006/12

Abstract: A method including: preparing an alumoxane precursor from an organic oxygen source, a hydrocarbyl aluminum, and an organic solvent; heating the alumoxane precursor to form an alumoxane suspension; removing solid methylaluminoxane from the alumoxane suspension by filtering the alumoxane suspension to form a filtered solution; and combining the filtered solution with a support to form a supported alumoxane precursor.

公开(公告)号：US20240010660A1

公开(公告)日：2024-01-11

申请号：US18253088

申请日：2021-11-17

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Francis C. RIX ,  Ky KA LE ,  Charles J. HARLAN

IPC: C07F5/06 ,  C08F4/659

CPC classification number: C07F5/068 ,  C08F4/65916

Abstract: The present disclosure relates to a precursor for making an activator in a catalyst system for olefin polymerization and methods of producing the precursor, the catalyst system, and the polyolefin. In at least one embodiment, an alumoxane precursor includes (i) the reaction product of at least one non-hydrolytic oxygen-containing compound and at least one hydrocarbyl aluminum; and (ii) an aliphatic hydrocarbon fluid. The reaction product can be identified by first set of signals in an 1HNMR spectrum in a region from about 4.5 ppm to about 5.1 ppm and a second set of signals in a region from about 5.1 ppm to about 6.5 ppm. The ratio of the first to the second set of signals is greater than or equal to about 2.8. The alumoxane precursor is easy to store and ship compared to MAO, which is an intermediate product in conventional methods for forming supported alumoxane.

公开(公告)号：US20180171040A1

公开(公告)日：2018-06-21

申请号：US15564397

申请日：2016-03-10

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Xuan YE ,  Matthew W. HOLTCAMP ,  Lubin LUO ,  Laughlin G. McCULLOUGH ,  Gregory S. DAY ,  Francis C. RIX ,  Jo Ann M. CANICH ,  David F. SANDERS ,  Matthew S. BEDOYA

IPC: C08F10/02

CPC classification number: C08F10/02 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/6592 ,  C08F4/65927 ,  C08F210/16 ,  C08F2420/02 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/18 ,  C08F4/65904 ,  C08F2500/05 ,  C08F2500/08

Abstract: This invention relates to a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds, where the first metallocene is a bridged monocyclopentadienyl group 4 transition metal compound and the second metallocene is a biscyclopentadientyl group 4 transition metal compound, where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably produced using a west mixing method, such as an aqueous method.