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1. 发明申请

US20190010263A1 PROCESS FOR PREPARING PROPYLENE COPOLYMER COMPOSITIONS 审中-公开
公开(公告)号：US20190010263A1
公开(公告)日：2019-01-10
申请号：US16067170
申请日：2016-12-27
申请人： BOREALIS AG
发明人： Kristin REICHELT , Kauno ALASTALO , Klaus NYFORS , Luigi RESCONI
IPC分类号： C08F210/06 , C08J5/18
CPC分类号： C08F210/06 , C08F2/001 , C08F2/01 , C08F2/12 , C08F2800/20 , C08J5/18 , C08J2323/14 , C08L23/14
摘要： The present invention relates to an olefin polymerization process for producing propylene copolymer composition (P), wherein propylene, C4 to C10 α-olefin and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst in a multistage polymerization process comprising at least two polymerization reactors, wherein the copolymer composition is bimodal with respect to the content of C4 to C10 α-olefin and, if present, to ethylene. Further, the invention is directed to the propylene copolymer composition being bimodal with respect to the content of C4 to C10 α-olefin and optionally to ethylene, and use of said propylene copolymer compositions for producing articles.

2. 发明申请

US20200346180A1 METHOD OF SPLITTING THE RETURN FLUIDIZATION GAS IN A GAS SOLIDS OLEFIN POLYMERIZATION REACTOR 审中-公开
公开(公告)号：US20200346180A1
公开(公告)日：2020-11-05
申请号：US16765103
申请日：2018-10-25
申请人： Borealis AG
发明人： Günter WEICKERT , Eric-Jan PRINSEN , Klaus NYFORS , Erno ELOVAINIO , Vasileios KANELLOPOULOS
IPC分类号： B01J8/18 , C08F10/06 , C08F10/02 , B01J8/44
摘要： The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directly into the dense phase formed by particles of a polymer of the olefin monomer(s) suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.

3. 发明申请

US20180155465A1 METHOD AND APPARATUS FOR POLYMERISING OLEFINS IN GAS PHASE 审中-公开
公开(公告)号：US20180155465A1
公开(公告)日：2018-06-07
申请号：US15569954
申请日：2016-06-10
申请人： Borealis AG
发明人： Vasileios KANELLOPOULOS , Klaus NYFORS , Pablo Ivan AGUAYO ARELLANO , Gunter WEICKERT , Eric-Jan PRINSEN
IPC分类号： C08F10/02 , B01J8/18 , B01J8/00
摘要： The present invention deals with an olefin polymerisation process. At least one olefin is polymerised in gas phase in a fluidised bed in the presence of an olefin polymerisation catalyst in a polymerisation reactor having a vertical body; a generally conical downwards tapering bottom zone; a generally cylindrical middle zone above and connected to said bottom zone; and a generally conical upwards tapering top zone above and connected to said middle zone. Fluidisation gas is introduced to the bottom zone of the reactor from where it passes upwards through the reactor, and withdrawn from the top zone of the reactor. The gas is then compressed, cooled and returned into the bottom zone of the reactor. A fluidised bed is thus formed within the reactor where the growing polymer particles are suspended in the upwards rising gas stream wherein the superficial velocity of the fluidisation gas is less than the transport velocity of the particles. There is no fluidisation grid in the reactor. The fluidisation gas is passed from an inlet chamber into the bottom zone and the gas flows from the upper part of the inlet chamber to the lower part thereof and the gas flows from the lower part of the inlet chamber to the bottom zone.

4. 发明申请

US20210370255A1 METHOD FOR IMPROVING THE COOLING CAPACITY OF A GAS SOLIDS OLEFIN POLYMERIZATION REACTOR 有权
公开(公告)号：US20210370255A1
公开(公告)日：2021-12-02
申请号：US16765090
申请日：2018-10-25
申请人： Borealis AG
发明人： Günter WEICKERT , Eric-Jan PRINSEN , Klaus NYFORS , Erno ELOVAINIO , Vasileios KANELLOPOULOS
IPC分类号： B01J8/38 , B01J8/44 , B01J8/18 , C08F10/00
摘要： The present invention relates to a method for improving the cooling capacity of a gas solids olefin polymerization reactor by splitting the fluidization gas and returning part of the fluidization gas to the reactor into the bottom zone of the reactor and another part of the fluidization gas directly into the dense phase formed by particles of a polymer of the at least one olefin suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.

5. 发明申请

US20200369806A1 A METHOD FOR WITHDRAWING AGGLOMERATES FROM A FLUIDISED BED REACTOR 审中-公开
公开(公告)号：US20200369806A1
公开(公告)日：2020-11-26
申请号：US16065597
申请日：2016-12-15
申请人： BOREALIS AG
发明人： Mohammad AL-HAJ ALI , Vasileios KANELLOPOULOS , Apostolos KRALLIS , Klaus NYFORS , Pablo Ivan AGUAYO ARELLANO , Gunter Weickert , Eric-Jan PRINSEN
IPC分类号： C08F210/16 , B01J8/18 , B01J8/00
摘要： The present invention relates to a process and apparatus for withdrawing polymer agglomerates from a fluidised bed polymerisation reactor, the polymerisation reactor comprising a bottom zone having a generally conical shape and no fluidisation grid. The agglomerates are withdrawn by using an agglomerate trap below the bottom zone. A value of a process variable indicative of the content of agglomerates in the agglomerate trap is measured and the opening time of the valves transferring polymer to and from the agglomerate trap is adjusted based on the measured value.

6. 发明申请

US20150259446A1 METHOD OF POLYMERIZING OLEFINS IN SLURRY REACTORS 有权
标题翻译：在浆料反应器中聚合烯烃的方法
公开(公告)号：US20150259446A1
公开(公告)日：2015-09-17
申请号：US14723016
申请日：2015-05-27
申请人： BOREALIS AG
发明人： Ilke SENOL , Erik ERIKSSON , Kauno ALASTALO , Pauli LESKINEN , Klaus NYFORS
IPC分类号： C08F110/02
CPC分类号： C08F110/02 , C08F2/14 , C08F10/02 , C08F2/001 , C08F2500/12
摘要： A process including polymerizing ethylene in the presence of a polymerization catalyst and hydrogen in a first polymerization reactor to produce a first slurry; withdrawing a first stream of the slurry from the first polymerization reactor; directing the slurry stream into a second polymerization reactor; polymerizing ethylene in the presence of the first ethylene polymer, the polymerization catalyst, and hydrogen in a second polymerization reactor to produce a second slurry; withdrawing from the second polymerization reactor a second slurry stream having a solids concentration higher than the average solids concentration of the second slurry within the second polymerization reactor; withdrawing from the second polymerization reactor a third slurry stream having a solids concentration lower than the average solids concentration of the second slurry within the second polymerization reactor; and directing at least a part of the second slurry stream into one of the first and second polymerization reactors.
摘要翻译：一种方法，包括在聚合催化剂和氢存在下在第一聚合反应器中聚合乙烯以产生第一浆料; 从第一聚合反应器中取出第一浆料流; 将浆料流引导到第二聚合反应器中; 在第二聚合反应器中在第一乙烯聚合物，聚合催化剂和氢的存在下聚合乙烯以产生第二浆料; 从所述第二聚合反应器中排出具有高于所述第二聚合反应器内的所述第二浆料的平均固体浓度的固体浓度的第二浆料流; 从所述第二聚合反应器中排出具有低于所述第二聚合反应器内的所述第二浆料的平均固体浓度的固体浓度的第三浆料流; 以及将所述第二浆料流的至少一部分引导到所述第一和第二聚合反应器之一中。

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