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公开(公告)号：US20240326007A1
公开(公告)日：2024-10-03
申请号：US18194897
申请日：2023-04-03
发明人： Corey W. Knight , Kenneth A. Dooley , Ralph J. Price , Richard A. Hernandez , Benjamin M. Shaw , Joe R. Trevino , Trevor Hilderman
CPC分类号： B01J19/18 , B01J3/04 , B01J19/006 , B01J19/0066 , B01J2219/00779
摘要： Disclosed are a process and autoclave reactor configured to create, in a polymerization zone of the autoclave reactor, a first mixing current, a second mixing current, and an interface located between the first mixing current and the second mixing current, wherein the interface is offset from a reaction component inlet of the autoclave reactor that introduces a reaction component stream into the polymerization zone.
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公开(公告)号：US20240300810A1
公开(公告)日：2024-09-12
申请号：US18599601
申请日：2024-03-08
CPC分类号： C01B3/24 , C10G47/22 , C01B2203/0272 , C01B2203/062 , C01B2203/1241 , C01B2203/84 , C01B2203/86 , C10G2300/4043 , C10G2300/4081 , C10G2300/42 , C10G2400/20
摘要： Processes and systems that utilize methane pyrolysis for carbon capture from a petrochemical stream that contains hydrogen and methane. The petrochemical stream can be the tail gas of a hydrocarbon cracking system, or any other petrochemical stream containing hydrogen and methane. The petrochemical stream can be separated into a hydrogen product stream and a methane product stream, before sending the methane product stream to a methane pyrolysis unit. The methane pyrolysis unit converts methane to solid carbon and hydrogen.
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公开(公告)号：US20240279371A1
公开(公告)日：2024-08-22
申请号：US18638423
申请日：2024-04-17
发明人： Graham R. Lief , Qing Yang , Eric J. Haschke
IPC分类号： C08F210/16 , C07F17/00 , C08F4/659 , C08F4/6592
CPC分类号： C08F210/16 , C07F17/00 , C08F4/65904 , C08F4/65925 , C08F4/65927
摘要： Disclosed are metallocene compounds, catalyst compositions comprising at least one metallocene compound, processes for polymerizing olefins, methods for making catalyst compositions, olefin polymers and articles made from olefin polymers. In an aspect, a metallocene compound and catalyst composition are disclosed in which the metallocene contains at least one indenyl ligand, the indenyl ligand containing at least one halogenated substituent, such as a fluorinated substituent. These metallocene compounds and catalyst compositions can produce polyethylene having unexpectedly low levels of short chain branching.
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公开(公告)号：US12059672B2
公开(公告)日：2024-08-13
申请号：US18395824
申请日：2023-12-26
IPC分类号： C08F4/78 , B01J8/08 , B01J8/18 , B01J19/12 , B01J31/12 , C08F10/02 , C08F110/02 , C08F210/16 , B01J21/08 , B01J23/26 , B01J31/34 , B01J37/16 , B01J37/34 , C08F4/22 , C08F4/69
CPC分类号： B01J31/12 , B01J8/085 , B01J8/18 , B01J19/123 , C08F10/02 , C08F110/02 , C08F210/16 , B01J21/08 , B01J23/26 , B01J31/34 , B01J37/16 , B01J37/34 , B01J37/344 , B01J37/345 , B01J2219/0869 , B01J2219/089 , B01J2219/1203 , B01J2531/62 , C08F4/22 , C08F4/69 , C08F4/78
摘要： Supported chromium catalysts with an average valence less than +6 and having a hydrocarbon-containing or halogenated hydrocarbon-containing ligand attached to at least one bonding site on the chromium are disclosed, as well as ethylene-based polymers with terminal alkane, aromatic, or halogenated hydrocarbon chain ends. Another ethylene polymer characterized by at least 2 wt. % of the polymer having a molecular weight greater than 1,000,000 g/mol and at least 1.5 wt. % of the polymer having a molecular weight less than 1000 g/mol is provided, as well as an ethylene homopolymer with at least 3.5 methyl short chain branches and less than 0.6 butyl short chain branches per 1000 total carbon atoms.
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公开(公告)号：US12054443B2
公开(公告)日：2024-08-06
申请号：US17885625
申请日：2022-08-11
发明人： Jeffery C Gee
CPC分类号： C07C1/213 , B01J31/10 , C07C5/03 , C07C5/2568 , B01J2231/005 , B01J2531/002 , C07C2527/03
摘要： Processes for producing a linear internal olefin product include the steps of contacting an olefin feed containing C10-C20 vinylidenes and a C10-C20 normal alpha olefin and/or C10-C20 linear internal olefins, a first acid catalyst, and a C1 to C18 carboxylic acid to form a first reaction product containing linear internal olefins, trisubstituted olefins, and secondary esters, then removing all or a portion of the secondary esters from the first reaction product, followed by contacting the secondary esters and a second acid catalyst to form a second reaction product comprising linear internal olefins, and then removing all or a portion of the linear internal olefins from the second reaction product to form the linear internal olefin product. Linear alkanes subsequently can be produced by hydrogenating the linear internal olefin product to form a linear alkane product.
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公开(公告)号：US12049585B2
公开(公告)日：2024-07-30
申请号：US17354566
申请日：2021-06-22
摘要： Drilling mud compositions including a first concentration of powdered latex and a second concentration of SAS are described. The second concentration of SAS can be greater than or equal to the first concentration of latex. In some examples, the second concentration of SAS can be greater than the first concentration of latex. The drilling mud compositions may include an oil-based carrier, or a water-based carrier. An example technique includes dispersing a first predetermined amount of powdered latex and a second predetermined amount of SAS in a water-based carrier to form a water-based mud. Another example technique includes dispersing a first predetermined amount of powdered latex and a second predetermined amount of SAS in an oil-based carrier to form an oil-based mud.
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7.发明公开公开(公告)号：US20240247085A1
公开(公告)日：2024-07-25
申请号：US18585446
申请日：2024-02-23
发明人： Qing Yang , Max P. McDaniel , Tony R. Crain
IPC分类号： C08F4/659 , C08F4/52 , C08F4/64 , C08F4/6592 , C08F110/02 , C08F210/16
CPC分类号： C08F4/65912 , C08F4/65916 , C08F4/65927 , C08F110/02 , C08F210/16 , C08F4/52 , C08F4/64 , C08F2410/07 , C08F2500/09
摘要： 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.
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公开(公告)号：US12037421B2
公开(公告)日：2024-07-16
申请号：US18357209
申请日：2023-07-24
发明人： Qing Yang , Ryan N. Rose , Max P. McDaniel , Zhihui Gu
IPC分类号： C08F4/6592 , C08F4/02 , C08F4/52 , C08F4/642 , C08F4/659 , C08F110/02 , C08F210/16
CPC分类号： C08F110/02 , C08F4/025 , C08F4/52 , C08F4/642 , C08F4/65912 , C08F4/65916 , C08F210/16 , C08F2410/07 , C08F2420/00
摘要： 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.
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公开(公告)号：US12030975B2
公开(公告)日：2024-07-09
申请号：US17832932
申请日：2022-06-06
摘要： A pre-catalyst composition comprising: a) a silica support comprising silica wherein an amount of silica is in a range of from about 70 wt. % to about 95 wt. % based upon a total weight of the silica support; b) a titanium-containing compound wherein an amount of titanium is in a range of from about 0.1 wt. % to about 10 wt. % based upon the total weight of the silica support; c) a chromium-containing compound wherein an amount of chromium is in a range of from about 0.1 wt. % to about 10 wt. % based upon the total weight of the silica support; d) a surfactant wherein the surfactant comprises a non-ionic surfactant, a cationic surfactant, or a combination thereof; e) a carboxylate wherein the carboxylate comprises a multi carboxylate, an alpha-hydroxy carboxylate, or a combination thereof; and f) a solvent.
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公开(公告)号：US20240199768A1
公开(公告)日：2024-06-20
申请号：US18068887
申请日：2022-12-20
摘要： A technique of operating a gas phase fluidized bed polymerization reactor system may include feeding an olefin monomer and catalyst to a polymerization reactor. The monomer and the catalyst are contacted in a fluidized bed in the reactor to form a product including a polyolefin. A heat of polymerization is extracted from the reactor by recycling an inert condensable agent through the fluidized bed and condensing the inert condensable agent. The product is discharged from the reactor. The inert condensable agent includes propane, n-butane, or isobutane in a total mole fraction of greater than or equal to 0.50 of the inert condensable agent. A system including a gas phase fluidized bed polymerization reactor system may include a source of propane, n-butane, or isobutane for introduction into the polymerization system as an inert condensable agent. A loop slurry polymerization reactor system outlet may be the source of isobutane or propane.
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