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1.发明申请公开(公告)号：US20190322775A1
公开(公告)日：2019-10-24
申请号：US16348636
申请日：2017-11-09
Applicant: Basell Polyolefine GmbH
Inventor： Gerhardus Meier , Ulf Schueller , Gabriele Mei , Massimo Covezzi , Pietro Baita , Lorella Marturano
Abstract: A process for preparing an ethylene polymer including the step of homopolymerizing ethylene or copolymerizing ethylene with one or more comonomers in a gas-phase polymerization reactor including a riser unit wherein growing polymer particles flow upwards under fluidization, fast fluidization or transport conditions and a downcomer wherein growing polymer particles flow downward in a densified form, wherein the hold-up of polymer particles in the downcomer is from 55 wt. % to 80 wt. % of the total hold-up of polymer particles in the gas-phase polymerization reactor.
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公开(公告)号：US10471407B2
公开(公告)日：2019-11-12
申请号：US15853072
申请日：2017-12-22
Applicant: Basell Polyolefine GmbH
Inventor： Gabriele Mei , Massimo Covezzi , Gerhardus Meier , Antonio Mazzucco , Pietro Baita , Ulf Schueller , Lorella Marturano , Enrico Balestra
IPC: B01J8/28 , B01J8/18 , C08F110/02 , C08F110/06
Abstract: A process for starting a multizone circulating reactor containing no polyolefin particles, comprising the steps of conveying gas through the reactor and the gas recycle line, feeding a particulate material comprising a polymerization catalyst and optionally polyolefin into the reactor, controlling the gas flow in a vertical reactor zone equipped with a throttling valve at the bottom so that the upwards gas velocity in the bottom part of this reaction zone is lower than the terminal free-fall velocity of the particulate material fed into the reactor, and, after the weight of the particulate polyolefin in this reactor zone is higher than the drag force of the upward moving gas, controlling the circulation rate of the polymer particles within the multizone circulating reactor by adjusting the opening of the throttling valve and adjusting the flow rate of a dosing gas.
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公开(公告)号：US20150166778A1
公开(公告)日：2015-06-18
申请号：US14407204
申请日：2013-06-19
Applicant: Basell Polyolefine GmbH
Inventor： Fabiana Fantinel , Bodo Richter , Shahram Mihan , Massimo Covezzi , Claudio Cavalieri , Michele Grazzi
CPC classification number: C08L23/12 , C08F4/61912 , C08F4/61916 , C08F4/65927 , C08F4/7042 , C08J5/18 , C08J2323/16 , C08J2423/06 , C08J2423/12 , C08L23/0815 , C08L23/10 , C08L23/16 , C08L2205/02 , C08L2205/03 , C08L2314/06 , C08L2314/08 , Y10T428/139 , C08F210/16 , C08F2/001 , C08F4/61904 , C08L23/08 , C08L23/142 , C08F210/06 , C08F2500/04 , C08F2500/12 , C08F2500/17 , C08F2500/21 , C08L23/06
Abstract: A two steps polymerization process for obtaining a polyolefin composition comprising: a) from 25 wt % to 70 wt % of a propylene homopolymer or a propylene-ethylene copolymer containing from 0.1 wt % to 10 wt % of ethylene derived units; b) from 27 wt % to 70 wt % of a copolymer of ethylene and at least one C3-C20 alpha olefins, wherein the ethylene derived units content ranges from 15 wt % to 70 wt %; c) from 3 wt % to 20 wt % of polyethylene homopolymer or an ethylene and at least one C3-C20 alpha olefins copolymer; the sum a)+b)+c) being 100, wherein said process comprises: step a) contacting under polymerization conditions propylene, optionally ethylene and the catalyst system in order to obtain component a), step b) contacting under polymerization conditions ethylene and at least one C3-C20 alpha-olefins and the catalyst system in order to obtain components b) and c); wherein the catalyst system comprises a metallocene compound and an iron complex.
Abstract translation: 一种用于获得聚烯烃组合物的两步聚合方法，包括：a）25重量％至70重量％的丙烯均聚物或含有0.1重量％至10重量％乙烯衍生单元的丙烯 - 乙烯共聚物; b）27重量％至70重量％的乙烯和至少一种C 3 -C 20α-烯烃的共聚物，其中乙烯衍生单元含量为15重量％至70重量％; c）3重量％至20重量％的聚乙烯均聚物或乙烯和至少一种C 3 -C 20α-烯烃共聚物; 总和a）+ b）+ c）为100，其中所述方法包括：步骤a）在聚合条件下丙烯，任选的乙烯和催化剂体系接触以获得组分a），步骤b）在聚合条件下使乙烯和 至少一种C 3 -C 20α-烯烃和催化剂体系以获得组分b）和c）; 其中所述催化剂体系包含茂金属化合物和铁络合物。
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Patent Agency Ranking
公开(公告)号：US20140309384A1
公开(公告)日：2014-10-16
申请号：US14362842
申请日：2012-12-04
Applicant: Basell Polyolefine GmbH
Inventor： Massimo Covezzi , Giuseppe Penzo , Gabriele Mei , Giulia Mei , Pietro Baita , Gerhardus Meier , Antonio De Lucia , Ulf Schueller , Gianpiero Ferraro
IPC: C08F110/02
CPC classification number: C08F110/02 , C08F2/001 , C08F2/34 , C08F10/00 , C08F10/02 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F2/00 , C08F2/01
Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors,wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe,the process comprising the steps ofintroducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point;withdrawing polyolefin particles from the lower end of the settling pipe; andtransferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor,process for polymerizing olefins comprising such a process for transferring polyolefin particles, reactor suitable as first gas-phase polymerization reactor in the process for polymerizing olefins and process for discharging polyolefin particles from a fluidized-bed reactor.
Abstract translation: 在至少两个串联连接的气相聚合反应器中进行的烯烃多级聚合中将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法，其中第一气相反应器是 流化床反应器包括气体分配网格和沉降管，其与其上部开口集成到分配网格中并且包含从沉降管的顶部移动到底部的聚烯烃颗粒床，该方法包括以下步骤：引入 流入沉降管中的流体，其量为在流体引入点上方的聚烯烃颗粒床中引起流体向上流; 从沉降管的下端取出聚烯烃颗粒; 并将取出的聚烯烃颗粒转移到第二气相聚合反应器中，用于聚合烯烃的方法包括这种转移聚烯烃颗粒的方法，在聚合烯烃的方法中适合作为第一气相聚合反应器的反应器和用于从聚烯烃中排出聚烯烃颗粒的方法 流化床反应器。
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5.发明授权公开(公告)号：US10968291B2
公开(公告)日：2021-04-06
申请号：US16348636
申请日：2017-11-09
Applicant: Basell Polyolefine GmbH
Inventor： Gerhardus Meier , Ulf Schueller , Gabriele Mei , Massimo Covezzi , Pietro Baita , Lorella Marturano
Abstract: A process for preparing an ethylene polymer including the step of homopolymerizing ethylene or copolymerizing ethylene with one or more comonomers in a gas-phase polymerization reactor including a riser unit wherein growing polymer particles flow upwards under fluidization, fast fluidization or transport conditions and a downcomer wherein growing polymer particles flow downward in a densified form, wherein the hold-up of polymer particles in the downcomer is from 55 wt. % to 80 wt. % of the total hold-up of polymer particles in the gas-phase polymerization reactor.
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公开(公告)号：US09738778B2
公开(公告)日：2017-08-22
申请号：US14407204
申请日：2013-06-19
Applicant: Basell Polyolefine GmbH
Inventor： Fabiana Fantinel , Bodo Richter , Shahram Mihan , Massimo Covezzi , Claudio Cavalieri , Michele Grazzi
CPC classification number: C08L23/12 , C08F4/61912 , C08F4/61916 , C08F4/65927 , C08F4/7042 , C08J5/18 , C08J2323/16 , C08J2423/06 , C08J2423/12 , C08L23/0815 , C08L23/10 , C08L23/16 , C08L2205/02 , C08L2205/03 , C08L2314/06 , C08L2314/08 , Y10T428/139 , C08F210/16 , C08F2/001 , C08F4/61904 , C08L23/08 , C08L23/142 , C08F210/06 , C08F2500/04 , C08F2500/12 , C08F2500/17 , C08F2500/21 , C08L23/06
Abstract: A two steps polymerization process for obtaining a polyolefin composition comprising: a) from 25 wt % to 70 wt % of a propylene homopolymer or a propylene-ethylene copolymer containing from 0.1 wt % to 10 wt % of ethylene derived units; b) from 27 wt % to 70 wt % of a copolymer of ethylene and at least one C3-C20 alpha olefins, wherein the ethylene derived units content ranges from 15 wt % to 70 wt %; c) from 3 wt % to 20 wt % of polyethylene homopolymer or an ethylene and at least one C3-C20 alpha olefins copolymer; the sum a)+b)+c) being 100, wherein said process comprises: step a) contacting under polymerization conditions propylene, optionally ethylene and the catalyst system in order to obtain component a), step b) contacting under polymerization conditions ethylene and at least one C3-C20 alpha-olefins and the catalyst system in order to obtain components b) and c); wherein the catalyst system comprises a metallocene compound and an iron complex.
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公开(公告)号：US20180178180A1
公开(公告)日：2018-06-28
申请号：US15853072
申请日：2017-12-22
Applicant: Basell Polyolefine GmbH
Inventor： Gabriele Mei , Massimo Covezzi , Gerhardus Meier , Antonio Mazzucco , Pietro Baita , Ulf Schueller , Lorella Marturano , Enrico Balestra
IPC: B01J8/28 , C08F110/02 , C08F110/06 , B01J8/18
Abstract: A process for starting a multizone circulating reactor containing no polyolefin particles, comprising the steps of conveying gas through the reactor and the gas recycle line, feeding a particulate material comprising a polymerization catalyst and optionally polyolefin into the reactor, controlling the gas flow in a vertical reactor zone equipped with a throttling valve at the bottom so that the upwards gas velocity in the bottom part of this reaction zone is lower than the terminal free-fall velocity of the particulate material fed into the reactor, and, after the weight of the particulate polyolefin in this reactor zone is higher than the drag force of the upward moving gas, controlling the circulation rate of the polymer particles within the multizone circulating reactor by adjusting the opening of the throttling valve and adjusting the flow rate of a dosing gas.
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公开(公告)号：US09133291B2
公开(公告)日：2015-09-15
申请号：US14362842
申请日：2012-12-04
Applicant: Basell Polyolefine GmbH
Inventor： Massimo Covezzi , Giuseppe Penzo , Gabriele Mei , Giulia Mei , Pietro Baita , Gerhardus Meier , Antonio De Lucia , Ulf Schueller , Gianpiero Ferraro
CPC classification number: C08F110/02 , C08F2/001 , C08F2/34 , C08F10/00 , C08F10/02 , C08F2500/12 , C08F2500/18 , C08F2500/24 , C08F2/00 , C08F2/01
Abstract: Process for transferring polyolefin particles from a first gas-phase polymerization reactor to a second gas-phase polymerization reactor in a multistage polymerization of olefins carried out in at least two serially connected gas-phase polymerization reactors,wherein the first gas-phase reactor is a fluidized-bed reactor comprising a gas distribution grid and a settling pipe, which is integrated with its upper opening into the distribution grid and contains a bed of polyolefin particles which moves from top to bottom of the settling pipe, the process comprising the steps of introducing a fluid into the settling pipe in an amount that an upward stream of the fluid is induced in the bed of polyolefin particles above the fluid introduction point; withdrawing polyolefin particles from the lower end of the settling pipe; and transferring the withdrawn polyolefin particles into the second gas-phase polymerization reactor, process for polymerizing olefins comprising such a process for transferring polyolefin particles, reactor suitable as first gas-phase polymerization reactor in the process for polymerizing olefins and process for discharging polyolefin particles from a fluidized-bed reactor.
Abstract translation: 在至少两个串联连接的气相聚合反应器中进行的烯烃多级聚合中将聚烯烃颗粒从第一气相聚合反应器转移到第二气相聚合反应器的方法，其中第一气相反应器是 流化床反应器包括气体分配网格和沉降管，其与其上部开口集成到分配网格中并且包含从沉降管的顶部移动到底部的聚烯烃颗粒床，该方法包括以下步骤：引入 流入沉降管中的流体，其量为在流体引入点上方的聚烯烃颗粒床中引起流体向上流; 从沉降管的下端取出聚烯烃颗粒; 并将取出的聚烯烃颗粒转移到第二气相聚合反应器中，用于聚合烯烃的方法包括这种转移聚烯烃颗粒的方法，在聚合烯烃的方法中适合作为第一气相聚合反应器的反应器和用于从聚烯烃中排出聚烯烃颗粒的方法 流化床反应器。
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