-
公开(公告)号：US12162968B2
公开(公告)日：2024-12-10
申请号：US18311971
申请日：2023-05-04
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jian Yang , Jo Ann M. Canich , Hua Zhou , Jennifer L Rapp
IPC: C07F17/00 , C07C2/30 , C07C2/32 , C07C17/00 , C08F4/659 , C08F4/6592 , C08F210/16
Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
-
公开(公告)号：US20230312772A1
公开(公告)日：2023-10-05
申请号：US18299510
申请日：2021-10-20
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Irene C. Cai , Hua Zhou , Jo Ann M. Canich , John R, Hagadorn , Dmitry V. Uborsky , Georgy P. Goryunov , Mikhail I. Sharikov , Alexander Z. Voskoboynikov
IPC: C08F4/64
CPC classification number: C08F4/64189
Abstract: This invention relates to transition metal complexes of a multi-dentate ligand that features a neutral heterocyclic Lewis base and a second Lewis base, where the multi-dentate ligand coordinates to the metal center to form at least one 8-membered chelate ring.
-
公开(公告)号：US11021553B2
公开(公告)日：2021-06-01
申请号：US16537364
申请日：2019-08-09
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Patrick C. Chen , Jennifer L. Rapp , Jian Yang , Jo Ann M. Canich , Hua Zhou , Craig J. Emett , Kyle G. Lewis , Babak LotfizadehDehkordi
IPC: C07C2/30 , C07C2/32 , C08F4/6592 , C08F10/14 , C08F4/659 , C08F2/01 , C08F8/04 , C10M107/10
Abstract: The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, the present disclosure provides a process to produce a poly alpha-olefin (PAO), the process including: introducing a C6-C32 alpha-olefin and a catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under reaction conditions, wherein the alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more; and obtaining a product comprising PAO dimer and optional higher oligomers of alpha-olefin, or a combination thereof, the PAO dimer comprising 96 mol % or more of vinylidene, based on total moles of vinylidene, disubstituted vinylene, and trisubstituted vinylene in the product. In at least one embodiment, a process includes functionalizing and/or hydrogenating a PAO product of the present disclosure. In at least one embodiment, a blend includes a PAO product of the present disclosure.
-
公开(公告)号：US20200002444A1
公开(公告)日：2020-01-02
申请号：US16308747
申请日：2017-06-28
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Donna J. Crowther , Hua Zhou , Jacqueline A. Lovell
Abstract: This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bond to the metal by dative bonds, catalyst systems comprising such and polymerization processes using such.
-
公开(公告)号：US20190248936A1
公开(公告)日：2019-08-15
申请号：US16270085
申请日：2019-02-07
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jian Yang , Jo Ann M. Canich , Hua Zhou , Jennifer L. Rapp
IPC: C08F210/16 , C08F4/6592 , C08F4/659
CPC classification number: C08F210/16 , C08F4/65908 , C08F4/65912 , C08F4/65922
Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
-
Patent Agency Ranking
公开(公告)号：US20220106422A1
公开(公告)日：2022-04-07
申请号：US17348546
申请日：2021-06-15
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jian Yang , Jo Ann M. Canich , Hua Zhou , Jennifer L. Rapp
IPC: C08F210/16 , C08F4/659 , C08F4/6592 , C07C2/30 , C07C2/32
Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
-
公开(公告)号：US11203654B2
公开(公告)日：2021-12-21
申请号：US16788088
申请日：2020-02-11
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Georgy P. Goryunov , Vladislav A. Popov , Dmitry V. Uborsky , Alexander Z. Voskoboynikov , John R. Hagadorn , Irene C. Cai , Hua Zhou , Jo Ann M. Canich
Abstract: The present disclosure relates to bis(aryl phenolate) Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization as the bis(aryl phenolate) Lewis base catalysts are stable at high polymerization temperatures and have good activity at the high polymerization temperatures. The stable catalysts with good activity can provide formation of polymers having high molecular weights and the ability to make an increased amount of polymer in a given reactor, as compared to conventional catalysts. Hence, the present disclosure demonstrates highly active catalysts capable of operating at high reactor temperatures while producing polymers with controlled molecular weights and or robust isotacticity.
-
公开(公告)号：US11084894B2
公开(公告)日：2021-08-10
申请号：US16270085
申请日：2019-02-07
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jian Yang , Jo Ann M. Canich , Hua Zhou , Jennifer L. Rapp
IPC: C07C2/30 , C07C2/32 , C08F4/6592 , C08F210/16 , C08F4/659
Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
-
公开(公告)号：US10280234B2
公开(公告)日：2019-05-07
申请号：US15782418
申请日：2017-10-12
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Donna J. Crowther , Hua Zhou , Jacqueline A. Lovell
Abstract: This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bonded to the metal by dative bonds and a silyl or germyl bridge, catalyst systems comprising such, and polymerization processes using such.
-
公开(公告)号：US11680121B2
公开(公告)日：2023-06-20
申请号：US17348546
申请日：2021-06-15
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Jian Yang , Jo Ann M. Canich , Hua Zhou , Jennifer L. Rapp
IPC: C07C2/30 , C07C2/32 , C08F4/6592 , C08F210/16 , C08F4/659
CPC classification number: C08F210/16 , C07C2/30 , C07C2/32 , C08F4/65908 , C08F4/65912 , C08F4/65922
Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.059 seconds)
