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：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：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.

公开(公告)号：US20240084052A1

公开(公告)日：2024-03-14

申请号：US18492911

申请日：2023-10-24

Applicant: Chevron Phillips Chemical Company LP

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

IPC: C08F4/78 ,  C08F4/02

CPC classification number: C08F4/78 ,  C08F4/025

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：US20230340166A1

公开(公告)日：2023-10-26

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: C08F4/02 ,  C08F4/78

CPC classification number: C08F4/025 ,  C08F4/78

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.