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公开(公告)号：US11098143B2
公开(公告)日：2021-08-24
申请号：US16649044
申请日：2018-09-13
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Antonio Mazzucco , Enrico Balestra , Roberto Pantaleoni , Davide Tartari , Riccardo Rinaldi
IPC: B01J8/26 , C08F210/06 , B01J8/22
Abstract: A process for the polymerization of olefins in gas phase carried out in a reactor having two interconnected polymerization zones, a first zone (riser) and a second zone (downcomer), wherein growing polymer particles: a) flow through the riser under fast fluidization conditions established by feeding a mixture of gas and liquid; b) leave the riser and enter the downcomer, through which the growing polymer particles flow downward in a densified form; and c) leave the downcomer and are reintroduced into the riser, thereby establishing a circulation of polymer between the riser and the downcomer; the reactor is operated at a temperature between 0° C. and 5° C. above the dew point of the riser gas at the operating pressure, and in the riser, besides the growing polymer particles and gas flow, an amount of liquid is present.
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公开(公告)号：US10792637B2
公开(公告)日：2020-10-06
申请号：US16477283
申请日：2017-12-15
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Enrico Balestra , Tiziana Caputo , Massimo Covezzi , Maurizio Dorini , Antonio Mazzucco , Gabriele Mei , Ricardo Rinaldi
Abstract: A fluid is fed into a polymer bed of a fluidized bed gas phase polymerization reactor by introducing the fluid into the polymer bed through a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end positioned so that the following equation is fulfilled: d/D>0.002 wherein d is the distance of the distributor's discharge end from the wall of the reactor, and D is the diameter of the reactor in the fluidized bed zone.
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Patent Agency Ranking
公开(公告)号：US11453767B2
公开(公告)日：2022-09-27
申请号：US16495289
申请日：2018-03-23
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Gabriele Mei , Antonio Mazzucco , Tiziana Caputo , Enrico Balestra , Davide Tartari , Gilberto Moscardi
IPC: C08F210/06 , C08L23/10 , C08L23/12 , C08L23/06
Abstract: A propylene ethylene copolymer having: (i) an ethylene derived units content (C2) ranging from 2.0 wt % to 11.0 wt %, based upon the total weight of the copolymer; (ii)) a fraction soluble in xylene (Xs) at 25° C. (Xs) ranging from 7.1 wt % to 28.5 wt %, based upon the total weight of the copolymer; (iii) an intrinsic viscosity of the fraction soluble in xylene at 25° C. ranging from 3.2 dl/g to 5.6 dl/g; (iv) a melting point (Tm) higher than 140.0° C. and fulfilling the relation (I): Tm>155−1.4×C2 (I); and (v) a flexural modulus (TM) higher than 500 MPa and fulfilling the relation (II) TM>1900−285×C2+50×Xs (II).
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公开(公告)号：US20150232588A1
公开(公告)日：2015-08-20
申请号：US14429585
申请日：2013-09-05
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Enrico Balestra , Tiziana Caputo , Maurizio Dorini , Antonio Mazzucco , Silvia Soffritti
CPC classification number: C08F10/06 , B01J8/24 , B01J8/26 , B01J8/388 , B01J19/24 , B01J2208/00274 , B01J2208/00283 , B01J2208/00734 , B01J2219/00164 , B01J2219/24 , C08F10/00 , C08F210/06 , C08F2/34 , C08F2/005 , C08F2/001 , C08F210/16 , C08F2500/12 , C08F2/01
Abstract: A process and apparatus for producing olefin polymers are disclosed, comprising:a. polymerizing one or more olefins in the gas phase, in the presence of an olefin polymerization catalyst, whereby growing polymer particles flow along a cylindrically-shaped downward path in densified form under the action of gravity so as to form a densified bed of downward-flowing polymer particles b. allowing said polymer particles to flow through a restriction of the densified bed, such restriction being positioned in a restriction zone extending from the bed upward to a distance of 15% of the total height of the densified bed; and c. metering an antistatic agent through a feed line connected to the densified bed at a feed point being located in a feed zone extending from the top of the restriction upward, to a distance five times the diameter of the section of the densified bed above the restriction.
Abstract translation: 公开了一种用于生产烯烃聚合物的方法和设备，包括：a。 在气相中聚合一种或多种烯烃，在烯烃聚合催化剂的存在下，由此生长的聚合物颗粒在致密形式的重力作用下沿着圆柱形的向下的路径流动，以形成向下流动的致密化床 聚合物颗粒b。 允许所述聚合物颗粒流过致密化床的限制，这种限制被定位在从床向上延伸到致密化床的总高度的15％的距离的限制区域中; 和c。 通过连接到致密化床的供给管线的计量抗静电剂，所述供给管线位于从限制件的顶部向上延伸的进料区域中的进料点，距离所述限制物上方的致密化床部分的直径的五倍。
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公开(公告)号：US11084016B2
公开(公告)日：2021-08-10
申请号：US16636774
申请日：2018-07-17
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Gian Luca Bonaccorsi , Giuseppe Penzo , Enrico Balestra , Maurizio Dorini , Riccardo Rinaldi
Abstract: A manhole for a polymerization unit having a through-hole formed with a shoulder matching a corresponding shoulder of a plug of a closure member operatively inserted in the through-hole. The through-hole can be closed with a minimum clearance, such that polymer particles do not deposit in the gap between the wall of the unit and the plug of the closure member.
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公开(公告)号：US10604645B2
公开(公告)日：2020-03-31
申请号：US16064900
申请日：2016-11-28
Applicant: BASELL POLIOLEFINE ITALIA S.R.L.
Inventor： Antonio Mazzucco , Gabriele Mei , Tiziana Caputo , Roberto Pantaleoni , Enrico Balestra , Maria Di Diego , Mara Destro , Riccardo Rinaldi
Abstract: A process for the preparation of polyolefins carried out in the presence of an antistatic composition made from or containing:a) a compound of formula R—OH wherein R represents hydrogen or a linear or branched, saturated alkyl group having from 1 to 15 carbon atoms; andb) an oligomeric or polymeric organic compound having one or more terminal hydroxyl groups and a viscosity at 40° C. of at least about 20 mm2/sec (DIN 51562).
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公开(公告)号：US09469703B2
公开(公告)日：2016-10-18
申请号：US14429585
申请日：2013-09-05
Applicant: Basell Poliolefine Italia S.r.l.
Inventor： Enrico Balestra , Tiziana Caputo , Maurizio Dorini , Antonio Mazzucco , Silvia Soffritti
CPC classification number: C08F10/06 , B01J8/24 , B01J8/26 , B01J8/388 , B01J19/24 , B01J2208/00274 , B01J2208/00283 , B01J2208/00734 , B01J2219/00164 , B01J2219/24 , C08F10/00 , C08F210/06 , C08F2/34 , C08F2/005 , C08F2/001 , C08F210/16 , C08F2500/12 , C08F2/01
Abstract: A process and apparatus for producing olefin polymers are disclosed, comprising:a. polymerizing one or more olefins in the gas phase, in the presence of an olefin polymerization catalyst, whereby growing polymer particles flow along a cylindrically-shaped downward path in densified form under the action of gravity so as to form a densified bed of downward-flowing polymer particles b. allowing said polymer particles to flow through a restriction of the densified bed, such restriction being positioned in a restriction zone extending from the bed upward to a distance of 15% of the total height of the densified bed; and c. metering an antistatic agent through a feed line connected to the densified bed at a feed point being located in a feed zone extending from the top of the restriction upward, to a distance five times the diameter of the section of the densified bed above the restriction.
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