公开(公告)号：US20240367155A1

公开(公告)日：2024-11-07

申请号：US18650230

申请日：2024-04-30

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Zhihui Gu ,  Ted H. Cymbaluk ,  Anand Ramanathan ,  Julian Abrego ,  Taryn L. Huber ,  David W. Dockter

IPC: B01J23/26 ,  B01J21/08 ,  B01J37/08 ,  B01J37/14 ,  C08F10/02

Abstract: Processes for producing activated chromium catalysts such as titanated chromium/silica catalysts are disclosed, and these processes utilize a multistep process involving exposure to inert and oxidizing atmospheres at specific temperature conditions. The resulting activated chromium catalysts have unexpectedly high melt index potential and can produce ethylene-based polymers with lower gel counts in addition to higher melt indices.

公开(公告)号：US11999814B2

公开(公告)日：2024-06-04

申请号：US18065003

申请日：2022-12-13

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Qing Yang ,  Ryan N. Rose ,  Kathy S. Clear ,  Graham R. Lief ,  Eric D. Schwerdtfeger ,  Anand Ramanathan ,  Jeremy M. Praetorius ,  Connor D. Boxell

IPC: C08F4/02 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/02

CPC classification number: C08F4/025 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/02 ,  C08F2420/01 ,  C08F2420/03

Abstract: Sulfated bentonite compositions are characterized by a total pore volume from 0.4 to 1 mL/g, a total BET surface area from 200 to 400 m2/g, and an average pore diameter from 55 to 100 Angstroms. The sulfated bentonite compositions also can be characterized by a d50 average particle size in a range from 15 to 50 μm and a ratio of d90/d10 from 3 to 15. The sulfated bentonite compositions can contain a sulfated bentonite and from 10 to 90 wt. % of colloidal particles, or the sulfated bentonite compositions can contain a sulfated bentonite and from 0.2 to 10 mmol/g of zinc and/or phosphorus. These compositions can be utilized in metallocene catalyst systems to produce ethylene based polymers.

公开(公告)号：US20250154298A1

公开(公告)日：2025-05-15

申请号：US18939676

申请日：2024-11-07

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Zhihui Gu ,  Ted H. Cymbaluk ,  Anand Ramanathan ,  Julian Abrego ,  Taryn Huber ,  Ravindranath Koyyalagunta ,  Marlon L. Jordan ,  David W. Dockter

IPC: C08F10/02

Abstract: Processes for producing activated chromium catalysts such as chromium/silica catalysts and titanated chromium/silica catalysts are disclosed, and these processes utilize a multistep process involving exposure to inert and oxidizing atmospheres at specific temperature conditions. The resulting activated chromium catalysts have unexpectedly high melt index potential and can produce ethylene-based polymers with lower gel counts in addition to higher melt indices. Related activation systems are provided in which the fluidizing gas entering the fluidized bed vessel can be adjusted between an inert gas, an oxygen-containing gas, or a mixture of the inert gas and the oxygen-containing gas to minimize or prevent exotherms.

公开(公告)号：US12162829B2

公开(公告)日：2024-12-10

申请号：US17553165

申请日：2021-12-16

Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP

Inventor： Pasquale Iacono ,  Jamie N. Sutherland ,  Carlton E. Ash ,  Anand Ramanathan

IPC: C07C51/15

Abstract: Catalysts and catalytic processes for the synthesis of acrylic acid and other α,β-unsaturated carboxylic acids and their salts, which are carried out in a diluent or in the absence of a diluent. In an aspect, ethylene and CO2 can be contacted with a Group 8-11 transition metal precursor compound or a Group 8-11 transition metal metalalactone compound in the presence of a metal-treated chemically-modified solid oxide (MT-CMSO) or a metal-treated solid oxide (MT-SO), to form a metal acrylate. As the catalytic activity wanes in either the presence or absence of a diluent, pressure cycling—that is, pressurizing the reaction system with CO2 and an olefin such as ethylene for a time period, releasing the pressure, then re-pressurizing with CO2 and ethylene—can rejuvenate the catalyst and restore its declining catalytic activity.

公开(公告)号：US20240376232A1

公开(公告)日：2024-11-14

申请号：US18780704

申请日：2024-07-23

Applicant: Chevron Phillips Chemical Company LP

Inventor： Anand Ramanathan ,  Max P. McDaniel ,  Jared L. Barr ,  Andrew T. Blagg ,  Christopher E. Wittner ,  Alan L. Solenberger ,  Zachary T. Kilpatrick ,  Micheal P. Stevens

IPC: C08F4/78 ,  C08F4/02

Abstract: Methods for making titanated silica supports, titanated chromium/silica pre-catalysts, and activated titanated chromium/silica catalysts are disclosed in which hydrogen peroxide and an alkali metal precursor are used during catalyst preparation. Resulting titanated chromium/silica pre-catalysts often contain silica, 0.1 to 5 wt. % chromium, 0.1 to 10 wt. % titanium, and less than or equal to 4 wt. % carbon, and further contain a bound alkali metal or zinc at a molar ratio of alkali metal:titanium or zinc:titanium from 0.02:1 to 3:1 and/or at an amount in a range from 0.01 to 2 mmol of alkali metal or zinc per gram of the silica. High melt index potential activated titanated chromium/silica catalysts can be used to polymerize olefins to produce, for example, ethylene based homopolymers and copolymers having HLMI values of greater than 30 g/10 min.

公开(公告)号：US20240150501A1

公开(公告)日：2024-05-09

申请号：US18415809

申请日：2024-01-18

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Eric D. Schwerdtfeger ,  Qing Yang ,  Carlos A. Cruz ,  Jinping J. Zhou ,  Anand Ramanathan ,  Kathy S. Clear ,  Zhihui Gu

IPC: C08F4/02 ,  B01J29/06 ,  B01J35/61 ,  B01J35/63 ,  B01J35/64 ,  C08F210/16

CPC classification number: C08F4/025 ,  B01J29/06 ,  B01J35/615 ,  B01J35/635 ,  B01J35/638 ,  B01J35/647 ,  C08F210/16 ,  C08F2420/00

Abstract: Fluorided silica-coated alumina activator-supports have a bulk density from 0.15 to 0.37 g/mL, a total pore volume from 0.85 to 2 mL/g, a BET surface area from 200 to 500 m2/g, an average pore diameter from 10 to 25 nm, and from 80 to 99% of pore volume in pores with diameters of greater than 6 nm. Methods of making the fluorided silica-coated alumina activator-supports and using the fluorided silica-coated aluminas in catalyst compositions and olefin polymerization processes also are described. Representative ethylene-based polymers produced using the compositions and processes have a melt index of 0.1 to 10 g/10 min and a density of 0.91 to 0.96 g/cm3, and contain from 70 to 270 ppm solid oxide and from 2 to 18 ppm fluorine.

公开(公告)号：US20230391897A1

公开(公告)日：2023-12-07

申请号：US18327119

申请日：2023-06-01

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Eric D. Schwerdtfeger ,  Qing Yang ,  Carlos A. Cruz ,  Jinping J. Zhou ,  Anand Ramanathan ,  Kathy S. Clear ,  Zhihui Gu

IPC: C08F4/02 ,  B01J29/06 ,  B01J35/10 ,  C08F210/16

CPC classification number: C08F4/025 ,  B01J29/06 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/1019 ,  B01J35/1061 ,  C08F210/16 ,  C08F2420/00

Abstract: Fluorided silica-coated alumina activator-supports have a bulk density from 0.15 to g/mL, a total pore volume from 0.85 to 2 mL/g, a BET surface area from 200 to 500 m2/g, an average pore diameter from 10 to 25 nm, and from 80 to 99% of pore volume in pores with diameters of greater than 6 nm. Methods of making the fluorided silica-coated alumina activator-supports and using the fluorided silica-coated aluminas in catalyst compositions and olefin polymerization processes also are described. Representative ethylene-based polymers produced using the compositions and processes have a melt index of 0.1 to 10 g/10 min and a density of 0.91 to 0.96 g/cm3, and contain from 70 to 270 ppm solid oxide and from 2 to 18 ppm fluorine.

公开(公告)号：US12269911B2

公开(公告)日：2025-04-08

申请号：US18306326

申请日：2023-04-25

Applicant: Chevron Phillips Chemical Company LP

Inventor： Anand Ramanathan ,  Max P. McDaniel ,  Jared Barr ,  Andrew Blagg ,  Christopher E. Wittner ,  Alan L. Solenberger ,  Zachary T. Kilpatrick ,  Micheal P. Stevens

IPC: C08F4/78 ,  C08F4/02

Abstract: Methods for making titanated silica supports, titanated chromium/silica pre-catalysts, and activated titanated chromium/silica catalysts are disclosed in which hydrogen peroxide and an alkali metal precursor are used during catalyst preparation. Resulting titanated chromium/silica pre-catalysts often contain silica, 0.1 to 5 wt. % chromium, 0.1 to 10 wt. % titanium, and less than or equal to 4 wt. % carbon, and further contain an alkali metal or zinc at a molar ratio of alkali metal:titanium or zinc:titanium from 0.02:1 to 3:1 and/or at an amount in a range from 0.01 to 2 mmol of alkali metal or zinc per gram of the silica. High melt index potential activated titanated chromium/silica catalysts can be used to polymerize olefins to produce, for example, ethylene based homopolymers and copolymers having HLMI values of greater than 30 g/10 min.

公开(公告)号：US20250043037A1

公开(公告)日：2025-02-06

申请号：US18918298

申请日：2024-10-17

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Eric D. Schwerdtfeger ,  Qing Yang ,  Carlos A. Cruz ,  Jinping J. Zhou ,  Anand Ramanathan ,  Kathy S. Clear ,  Zhihui Gu

IPC: C08F4/02 ,  B01J29/06 ,  B01J35/61 ,  B01J35/63 ,  B01J35/64 ,  C08F4/619 ,  C08F4/6192 ,  C08F210/16

Abstract: Fluorided silica-coated alumina activator-supports have a bulk density from 0.15 to 0.37 g/mL, a total pore volume from 0.85 to 2 mL/g, a BET surface area from 200 to 500 m2/g, an average pore diameter from 10 to 25 nm, and from 80 to 99% of pore volume in pores with diameters of greater than 6 nm. Methods of making the fluorided silica-coated alumina activator-supports and using the fluorided silica-coated aluminas in catalyst compositions and olefin polymerization processes also are described. Representative ethylene-based polymers produced using the compositions and processes have a melt index of 0.1 to 10 g/10 min and a density of 0.91 to 0.96 g/cm3, and contain from 70 to 270 ppm solid oxide and from 2 to 18 ppm fluorine.

公开(公告)号：US20240279366A1

公开(公告)日：2024-08-22

申请号：US18648551

申请日：2024-04-29

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Qing Yang ,  Ryan N. Rose ,  Kathy S. Clear ,  Graham R. Lief ,  Eric D. Schwerdtfeger ,  Anand Ramanathan ,  Jeremy M. Praetorius ,  Connor D. Boxell

IPC: C08F4/02 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/02

CPC classification number: C08F4/025 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/02 ,  C08F2420/01 ,  C08F2420/03

Abstract: Sulfated bentonite compositions are characterized by a total pore volume from 0.4 to 1 mL/g, a total BET surface area from 200 to 400 m2/g, and an average pore diameter from 55 to 100 Angstroms. The sulfated bentonite compositions also can be characterized by a d50 average particle size in a range from 15 to 50 μm and a ratio of d90/d10 from 3 to 15. The sulfated bentonite compositions can contain a sulfated bentonite and from 10 to 90 wt. % of colloidal particles, or the sulfated bentonite compositions can contain a sulfated bentonite and from 0.2 to 10 mmol/g of zinc and/or phosphorus. These compositions can be utilized in metallocene catalyst systems to produce ethylene based polymers.