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1.发明公开公开(公告)号：US20240343847A1
公开(公告)日：2024-10-17
申请号：US18580415
申请日：2022-07-05
发明人： Diana Doetsch , Bernd Lothar Marczinke , Gerhardus Meier , Ulf Schueller , Elke Damm , Claudio Fibla
IPC分类号： C08F210/16 , C08L23/06 , C08L23/08
CPC分类号： C08F210/16 , C08L23/06 , C08L23/0815 , C08L2205/025 , C08L2314/02
摘要： A polyethylene composition having the following features:
1) a density from 0.957 to 0.968 g/cm3;
2) a ratio MIF/MIP from 12 to 30;
3) a MIF from 41 to 60 g/10 min.;
4) a long-chain branching index, LCBI, equal to or greater than 0.45; and
5) a ratio (η0.02/1000)/LCBI from 45 to 75.-
公开(公告)号：US12103988B2
公开(公告)日：2024-10-01
申请号：US17312822
申请日：2019-12-16
发明人： Giuseppe Penzo , Gerhardus Meier , Ulf Schueller , Pietro Baita , Giulia Mei , Elke Damm
IPC分类号： C08F210/16 , B01J8/00 , B01J8/18 , B01J8/26 , B01J21/04 , B01J23/42 , B01J23/44 , B01J23/72 , C08F2/01 , C08F2/34 , C08F110/02
CPC分类号： C08F110/02 , B01J8/0055 , B01J8/1827 , B01J8/1863 , B01J8/1881 , B01J8/26 , B01J21/04 , B01J23/42 , B01J23/44 , B01J23/72 , C08F210/16 , C08F2/01 , C08F2/34
摘要： A process for preparation of an ethylene polymer in a gas-phase polymerization unit comprising a gas-phase polymerization reactor by homopolymerizing ethylene or copolymerizing ethylene and one or more C4-C12-1-alkenes in a reaction gas made from or containing propane as polymerization diluent in the presence of a pre-activated polymerization catalyst, wherein a purified propane feed stream made from or containing at least 99 mol % propane and from 0.1 to 100 ppm mol propylene is fed to the gas-phase polymerization unit.
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3.发明公开公开(公告)号：US20240254264A1
公开(公告)日：2024-08-01
申请号：US18561455
申请日：2022-05-17
发明人： Gerhardus Meier , Ulf Schueller , Heike Gregorius , Gregor Hahn
IPC分类号： C08F210/16 , C08F2/01 , C08F2/34 , C08F4/642
CPC分类号： C08F210/16 , C08F2/01 , C08F2/34 , C08F4/6421 , C08F2400/02
摘要： A process for preparing an olefin polymer in a polymerization apparatus in the presence of a solid particulate polymerization catalyst and an organometallic compound, including the steps of withdrawing a gaseous stream from the polymerization apparatus, passing the gaseous stream through a bed of particulate solid having, at the surface of the particulate solid, chemical groups which are reactive with the organometallic compound, and feeding a sample of the gaseous stream into an analyzer.
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公开(公告)号：US20240093010A1
公开(公告)日：2024-03-21
申请号：US17945336
申请日：2022-09-15
发明人： Ulf Schueller , Sebastian Wilhelm , Harald Schmitz , Andreas Maus , Bernd Lothar Marczinke , Elke Damm , Gerhardus Meier , Eric D. Day , Sameer D. Mehta , Harilaos Mavridis
IPC分类号： C08L23/08
CPC分类号： C08L23/0815
摘要： A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features:
1) density from 0.948 to 0.955 g/cm3;
2) ratio MIF/MIE from 60 to 120;
3) MIF from 15 to 45 g/10 min.;
4) ER values from 2 to 5.0;
said composition being obtainable by contacting a precursor polyethylene composition with a radical initiator.-
公开(公告)号：US20240093009A1
公开(公告)日：2024-03-21
申请号：US17945329
申请日：2022-09-15
发明人： Ulf Schueller , Sebastian Wilhelm , Harald Schmitz , Andreas Maus , Bernd Lothar Marczinke , Elke Damm , Gerhardus Meier , Eric D. Day , Sameer D. Mehta , Harilaos Mavridis
IPC分类号： C08L23/06 , C08F110/02 , C08K5/14
CPC分类号： C08L23/06 , C08F110/02 , C08K5/14 , C08F2800/10 , C08L2207/062
摘要： A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features:
1) density from more than 0.955 to 0.965 g/cm3;
2) ratio MIF/MIE from 60 to 125;
3) MIF from 15 to 40 g/10 min.;
4) ER values from 3.0 to 5.5;
5) 110.02 equal to or lower than 150,000 Pa·s.-
公开(公告)号：US11845854B2
公开(公告)日：2023-12-19
申请号：US17275874
申请日：2019-09-04
IPC分类号： C08F210/16 , C08F2/00 , C08L23/06 , C08J5/18 , C08L23/08
CPC分类号： C08L23/06 , C08F210/16 , C08J5/18 , C08L23/0815 , C08F2/001 , C08J2323/06 , C08J2323/08 , C08J2423/06 , C08J2423/08
摘要： A polyethylene composition for producing blown films, made from or containing an ethylene homopolymer or copolymer A) and an ethylene copolymer B) having a MIE value lower than the MIE value of A), the composition having the following features:
1) density from 0.948 to 0.960 g/cm3;
2) ratio MIF/MIP from 20 to 40;
3) MIF from 6 to less than 15 g/10 min.;
4) HMWcopo index from 0.5 to 3.5;
5) long-chain branching index, LCBI, equal to or lower than 0.82;
6) η0.02 of equal to or less than 150000.-
公开(公告)号：US20230364574A1
公开(公告)日：2023-11-16
申请号：US18027882
申请日：2021-09-21
发明人： Tiziana Caputo , Pietro Baita , Maria Di Diego , Lorella Marturano , Antonio Mazzucco , Gabriele Mei , Giulia Mei , Roberta Pica
CPC分类号： B01J8/10 , B01J8/085 , B01J8/003 , C08F2/01 , C08F4/61912 , C08F110/02 , B01J2208/00752 , B01J2208/00761
摘要： An apparatus for polymerizing olefins including a polymerization reactor and a vessel system for pre-activating a solid catalyst component, wherein the vessel system is arranged upstream of the polymerization reactor. The vessel system includes a contacting vessel which includes a main portion, a base portion, a head portion, an inlet, an outlet, and a stirrer positioned within the contacting vessel, wherein the ratio (H/D) of the height (H) of the main portion to the diameter (D) of the main portion is 1.8 or greater. The stirrer is located at a position between the inlet and the outlet.
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公开(公告)号：US20230001372A1
公开(公告)日：2023-01-05
申请号：US17782047
申请日：2020-12-09
摘要： Apparatus for carrying out a catalytic gas-phase olefin polymerization having a first polymerization zone for growing polymer particles to flow upward under fast fluidization or transport conditions, a second polymerization zone for the growing polymer particles to flow downward, and a gas/solid separation zone; wherein the second polymerization zone has an upper part being connected to the separation zone and a lower part being connected to the upper part; wherein the ratio of the height H01 of the separation zone to the diameter D01 of the separation zone is 2.5 to 4.5.
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公开(公告)号：US20220402196A1
公开(公告)日：2022-12-22
申请号：US17763812
申请日：2020-09-28
发明人： Dieter Langenfelder , Jürgen Rohrmann , Karsten Schmitz , Carl Schirmeister , Yannic Kessler , Erik Licht , Christoph Callsen , Volker Altstädt
IPC分类号： B29C64/118 , B33Y10/00 , B33Y80/00 , B33Y70/00
摘要： A consumable filament and process for using the consumable filament in an extrusion-based additive manufacturing system made from or containing a heterophasic polypropylene composition having a xylene soluble content ranging from 15 wt % to 50 wt %, a melt flow rate MFR L ranging from 0.5 to 100 g/10 min, an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 1.5 to 6.0 dl/g, and an ethylene content ranging from 10 wt % to 50 wt %.
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10.发明授权公开(公告)号：US11505625B2
公开(公告)日：2022-11-22
申请号：US16635459
申请日：2018-08-02
发明人： Gabriele Mei , Giulia Mei , Giuseppe Penzo
摘要： A process for preparing an olefin polymer, including the steps of forming a particulate olefin polymer in a gas-phase polymerization reactor in the presence of a C3-C5 alkane as polymerization diluent, separating discharged polyolefin particles from concomitantly discharged gas at a pressure from 1 to 2.2 MPa, degassing the polyolefin particles at a pressure from 0.1 to 0.4 MPa with a gas made from or containing a C3-C5 alkane; and transferring the separated gas and the gas from the degassing to a work-up unit operated at a pressure from 0.001 to 0.2 MPa below the pressure of the separation, wherein the gas for degassing is continuously received from the work-up unit.
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