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：US20250011481A1

公开(公告)日：2025-01-09

申请号：US18882898

申请日：2024-09-12

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Graham R. Lief ,  Qing Yang ,  Carlos A. Cruz ,  Yongwoo Inn ,  Jared Barr

IPC: C08F10/02 ,  C07F17/00 ,  C08F4/02 ,  C08F4/659 ,  C08F10/14 ,  C08F210/16

Abstract: Methods for controlling the long chain branch content of ethylene homopolymers and copolymers produced in a polymerization process include the steps of contacting a metallocene compound, an organoaluminum compound, a high LCB activator-support, and a low LCB activator-support to form a catalyst composition, contacting the catalyst composition with ethylene and an optional olefin comonomer in a polymerization reactor system under polymerization conditions to produce an ethylene polymer having a LCB content, and controlling the relative amount of the high LCB activator-support and the low LCB activator-support in the catalyst composition to adjust the LCB content of the ethylene polymer.

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：US20240261771A1

公开(公告)日：2024-08-08

申请号：US18639002

申请日：2024-04-18

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Kathy S. Clear ,  Qing Yang ,  Tony R. Crain

IPC: B01J37/02 ,  B01J23/60 ,  B01J27/12 ,  B01J27/138 ,  B01J31/12

CPC classification number: B01J37/0209 ,  B01J23/60 ,  B01J27/12 ,  B01J27/138 ,  B01J31/122 ,  B01J37/0203 ,  B01J37/0213

Abstract: Disclosed herein are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with an inorganic base to form an aqueous mixture having a pH of at least 4, followed by contacting a solid oxide with the aqueous mixture to produce the fluorided solid oxide. Also disclosed are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with a solid oxide to produce a mixture, followed by contacting the mixture with a inorganic base to produce the fluorided solid oxide at a pH of at least about 4. The fluorided solid oxide can be used as an activator component in a catalyst system for the polymerization of olefins.

公开(公告)号：US11945938B2

公开(公告)日：2024-04-02

申请号：US18303656

申请日：2023-04-20

Applicant: Chevron Phillips Chemical Company LP

Inventor： Graham R. Lief ,  Qing Yang ,  Youlu Yu

IPC: C08L23/08 ,  C08F2/34 ,  C08F4/653 ,  C08F4/659 ,  C08F4/6592 ,  C08F210/16

CPC classification number: C08L23/0815 ,  C08F2/34 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65925 ,  C08F4/65927 ,  C08F210/16 ,  C08F2420/00 ,  C08L2207/062

Abstract: Ethylene-based polymers are characterized by a density from 0.92 to 0.955 g/cm3, a HLMI of less than 35 g/10 min, and a ratio of a number of short chain branches (SCBs) per 1000 total carbon atoms at Mz to a number of SCBs per 1000 total carbon atoms at Mn in a range from 11.5 to 22. These polymers can have a higher molecular weight (HMW) component and a lower molecular weight (LMW) component, in which a ratio of a number of SCBs per 1000 total carbon atoms at Mn of the HMW component to a number of SCBs per 1000 total carbon atoms at Mn of the LMW component is in a range from 10.5 to 22. These ethylene polymers can be produced using a dual catalyst system containing an unbridged metallocene compound with an indenyl group having at least one halogen-substituted hydrocarbyl substituent with at least two halogen atoms, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

公开(公告)号：US11945897B2

公开(公告)日：2024-04-02

申请号：US18489106

申请日：2023-10-18

Applicant: Chevron Phillips Chemical Company LP

Inventor： Qing Yang ,  Max P. McDaniel ,  Tony R. Crain

IPC: C08F4/64 ,  C08F4/52 ,  C08F4/659 ,  C08F4/6592 ,  C08F4/76 ,  C08F110/02 ,  C08F210/16

CPC classification number: C08F4/65912 ,  C08F4/65916 ,  C08F4/65927 ,  C08F110/02 ,  C08F210/16 ,  C08F4/52 ,  C08F4/64 ,  C08F2410/07 ,  C08F2500/09

Abstract: Methods for preparing a metallocene-based catalyst composition that can impact the long chain branching of ethylene homopolymers and copolymers produced using the catalyst composition are described. The catalyst composition can be prepared by contacting a metallocene compound, a hydrocarbon solvent, and a first organoaluminum compound for a first period of time to form a metallocene solution, and then contacting the metallocene solution with an activator-support and a second organoaluminum compound for a second period of time to form the catalyst composition.

公开(公告)号：US11859041B2

公开(公告)日：2024-01-02

申请号：US17403527

申请日：2021-08-16

Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP

Inventor： Steven M. Bischof ,  Qing Yang ,  Orson L. Sydora ,  Graham R. Lief ,  Richard M Buck ,  Daniel H. Ess ,  Steven M. Maley

IPC: C08F4/76 ,  G16C10/00 ,  G16C20/00 ,  G06N5/00 ,  C08F10/00 ,  C08F4/6192

CPC classification number: C08F4/76 ,  C08F10/00 ,  G16C10/00 ,  G16C20/00 ,  C08F4/61925 ,  C08F4/61927 ,  C08F2420/10 ,  G06N5/00

Abstract: This disclosure provides new methods for the design and development of ethylene polymerization catalysts, including Group 4 metallocene catalysts such as zirconocenes, which are based on an improved ability to adjust co-monomer incorporation into the polymer. Computational analyses with and without dispersion corrections revealed that designing catalyst scaffolds which induce stabilizing non-covalent dispersion type interactions with incoming α-olefin co-monomers can be used to modulate co-monomer selectivity into the polyethylene chain. Demonstrated herein is a lack of correlation of computed ΔΔG‡ values against experimental ΔΔG‡ values when the dispersion correction (D3BJ) was disabled, and B3LYP was used in the absence of Grimme's D3 dispersion and Becke-Johnson (BJ) dampening, but a correlation of computed against experimental ΔΔG‡ with B3LYP+D3BJ, which are used to design new catalyst scaffolds.

公开(公告)号：US11859024B2

公开(公告)日：2024-01-02

申请号：US17571665

申请日：2022-01-10

Applicant: Chevron Phillips Chemical Company LP

Inventor： Jeremy M. Praetorius ,  Alfred E. Brown, Jr. ,  Yongwoo Inn ,  Youlu Yu ,  Qing Yang ,  Ashish M. Sukhadia

IPC: C08F210/16 ,  B29C49/00 ,  C08F4/6592 ,  B29K23/00 ,  C08F210/02

CPC classification number: C08F210/16 ,  B29C49/0005 ,  C08F4/65927 ,  B29K2023/08 ,  C08F210/02 ,  C08F2500/09 ,  C08F2500/12 ,  C08F2500/17

Abstract: Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ηE/3η at an extensional rate of 0.1 sec−1 from 1.2 to 10. These polymers have substantially no long chain branching in the high molecular weight fraction of the polymer, but instead have significant long chain branching in a lower molecular weight fraction, such that polymer melt strength and parison stability are maintained for the fabrication of blow molded products and other articles of manufacture. These ethylene polymers can be produced using a dual catalyst system containing a single or two atom bridged metallocene compound with two indenyl groups, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group.

公开(公告)号：US20230416423A1

公开(公告)日：2023-12-28

申请号：US18357209

申请日：2023-07-24

Applicant: Chevron Phillips Chemical Company LP

Inventor： Qing Yang ,  Ryan N. Rose ,  Max P. McDaniel ,  Zhihui Gu

IPC: C08F110/02 ,  C08F4/52 ,  C08F4/642 ,  C08F4/02 ,  C08F210/16

CPC classification number: C08F110/02 ,  C08F4/52 ,  C08F4/642 ,  C08F4/025 ,  C08F210/16 ,  C08F2410/07 ,  C08F2420/00

Abstract: Methods for preparing metallocene-based catalyst compositions include the steps of contacting an alcohol compound and an organoaluminum compound for a first period of time to form a precontacted mixture, and contacting the precontacted mixture with an activator-support and a metallocene compound for a second period of time to form the catalyst composition. Such catalyst compositions can contain an activator-support, a metallocene compound, an organoaluminum compound, and a dialkyl aluminum alkoxide, and these catalyst compositions have increased catalytic activity for the polymerization of olefins.

公开(公告)号：US20230364598A1

公开(公告)日：2023-11-16

申请号：US18351546

申请日：2023-07-13

Applicant: Chevron Phillips Chemical Company LP

Inventor： Max P. McDaniel ,  Kathy S. Clear ,  Qing Yang ,  Tony R. Crain

IPC: B01J37/02 ,  B01J27/138 ,  B01J23/60 ,  B01J27/12 ,  B01J31/12

CPC classification number: B01J37/0209 ,  B01J23/60 ,  B01J27/12 ,  B01J27/138 ,  B01J31/122 ,  B01J37/0203 ,  B01J37/0213

Abstract: Disclosed herein are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with an inorganic base to form an aqueous mixture having a pH of at least 4, followed by contacting a solid oxide with the aqueous mixture to produce the fluorided solid oxide. Also disclosed are methods for preparing fluorided solid oxides by contacting an acidic fluorine-containing compound with a solid oxide to produce a mixture, followed by contacting the mixture with a inorganic base to produce the fluorided solid oxide at a pH of at least about 4. The fluorided solid oxide can be used as an activator component in a catalyst system for the polymerization of olefins.