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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
发明人： Enrico Balestra , Tiziana Caputo , Massimo Covezzi , Maurizio Dorini , Antonio Mazzucco , Gabriele Mei , Ricardo Rinaldi
摘要： 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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公开(公告)号：US10604645B2
公开(公告)日：2020-03-31
申请号：US16064900
申请日：2016-11-28
发明人： Antonio Mazzucco , Gabriele Mei , Tiziana Caputo , Roberto Pantaleoni , Enrico Balestra , Maria Di Diego , Mara Destro , Riccardo Rinaldi
摘要： 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：US10556972B2
公开(公告)日：2020-02-11
申请号：US16347124
申请日：2017-11-02
发明人： Pietro Baita , Massimo Covezzi , Maria Di Diego , Lorella Marturano , Antonio Mazzucco , Gabriele Mei , Roberta Pica
IPC分类号： C08F110/02 , C08F210/02 , C08F2/34 , C08F10/02
摘要： A gas-phase process for the homopolymerization or copolymerization of olefins carried out in the presence of a catalyst system formed by a contacting, in a liquid hydrocarbon and in the presence of hydrogen, (a) a solid catalyst component comprising Ti, Mg, and Cl, and optionally an internal electron donor compound, (b) an aluminum alkyl compound and optionally (c) an external donor compound.
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公开(公告)号：US10155888B2
公开(公告)日：2018-12-18
申请号：US15400734
申请日：2017-01-06
发明人： Massimo Covezzi , Gabriele Mei , Maria Di Diego , Piero Gessi , Pietro Baita , Roberta Pica
IPC分类号： C09J151/06 , C08F10/00 , C08F110/02 , B32B7/12 , B32B15/085 , B32B27/06 , C08L23/06 , C08L23/20 , C08L51/06 , C09J5/02 , C09J123/06 , C09J123/20
摘要： The present technology relates to a method of introducing a supported antistatic compound that does not comprise a transition-metal-based catalyst component for use in an olefin polymerization reactor. In some embodiments, the methods disclosed herein avoid the formation of polymer agglomerates in the reactor and minimize potentially negative effects on catalyst yield.
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公开(公告)号：US10077322B2
公开(公告)日：2018-09-18
申请号：US15533856
申请日：2015-12-01
发明人： Pietro Baita , Tiziano Dall'Occo , Maria Di Diego , Dario Liguori , Lorella Marturano , Andreas Maus , Gabriele Mei , Gerhardus Meier , Giampiero Morini , Roberta Pica , Ulf Schueller
IPC分类号： C08F4/649 , C08F4/654 , C08F110/02 , C08F210/02 , C08F2/34
CPC分类号： C08F2/34 , C08F4/6493 , C08F4/6494 , C08F110/02 , C08F2410/02 , C08F2500/12 , C08F2500/18 , C08F4/6543 , C08F210/02
摘要： The present disclosure provides a gas-phase polymerization process for preparing polyethylene, wherein halogenated alcohols in combination with a Ti based catalyst component and aluminum alkyls as co-catalyst suppress ethane formation or increase polymerization activity.
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公开(公告)号：US10011666B2
公开(公告)日：2018-07-03
申请号：US15514871
申请日：2015-09-22
发明人： Pietro Baita , Tiziano Dall'Occo , Maria Di Diego , Dario Liguori , Lorella Marturano , Gabriele Mei , Giampiero Morini , Roberta Pica
IPC分类号： C08F110/02 , C08F4/649 , C08F2/34 , C08F2/38 , B01J8/24
CPC分类号： C08F110/02 , C08F2410/02 , C08F2500/12 , C08F2500/18 , C08F4/6494 , C08F4/6493 , C08F4/6492 , C08F4/6543
摘要： The present disclosure provides a catalyst system made from or containing: (A) a solid catalyst component made from or containing (i) a titanium compound supported on a magnesium dichloride; (B) an aluminum alkyl compound; and (C) a halogenated organic ester of formula A-COOR, wherein R is a C1-C10 hydrocarbon group and A is a C1-C15 saturated or unsaturated hydrocarbon group in which at least one of the hydrogen atoms is replaced by a chlorine atom. The present disclosure also provides a process for preparing an olefinic polymer, including a polymerization step of polymerizing an olefin in the presence of the catalyst system. The present disclosure also provides an olefinic polymer made therefrom.
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公开(公告)号：US20150376303A1
公开(公告)日：2015-12-31
申请号：US14760949
申请日：2013-12-18
发明人： Massimo Covezzi , Gabriele Mei , Pietro Baita , Lorella Marturano
IPC分类号： C08F10/02
CPC分类号： C08F10/02 , C08F2/005 , C08F2410/02 , C08F110/02 , C08F2500/12 , C08F2500/18 , C08F2500/24
摘要： A process for the preparation of ethylene polymers comprising polymerizing ethylene, optionally with one or more α-olefin comonomers, in the presence of:(i) a solid catalyst component comprising titanium, magnesium, halogen and optionally an internal electron-donor compound, (ii) an aluminum alkyl compound, and (iii) an antistatic compound selected among the hydroxyesters with at least two free hydroxyl groups, wherein the weight ratio of aluminum alkyl compound to solid catalyst component is higher than 0.80 and the weight ratio of antistatic compound to aluminum alkyl compound is higher than 0.10.
摘要翻译： 一种用于制备乙烯聚合物的方法，包括在以下存在下聚合乙烯，任选与一种或多种α-烯烃共聚单体：（i）包含钛，镁，卤素和任选的内电子给体化合物的固体催化剂组分（ ii）铝烷基化合物，和（iii）选自具有至少两个游离羟基的羟基酯中的抗静电化合物，其中烷基铝化合物与固体催化剂组分的重量比高于0.80，抗静电化合物与 铝烷基化合物高于0.10。
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公开(公告)号：US11453767B2
公开(公告)日：2022-09-27
申请号：US16495289
申请日：2018-03-23
发明人： Gabriele Mei , Antonio Mazzucco , Tiziana Caputo , Enrico Balestra , Davide Tartari , Gilberto Moscardi
IPC分类号： C08F210/06 , C08L23/10 , C08L23/12 , C08L23/06
摘要： 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：US09938359B2
公开(公告)日：2018-04-10
申请号：US14760949
申请日：2013-12-18
发明人： Massimo Covezzi , Gabriele Mei , Pietro Baita , Lorella Marturano
IPC分类号： C08F10/02 , C08F2/34 , C08F2/44 , C08F2/00 , C08F110/02
CPC分类号： C08F10/02 , C08F2/005 , C08F2410/02 , C08F110/02 , C08F2500/12 , C08F2500/18 , C08F2500/24
摘要： A process for the preparation of ethylene polymers comprising polymerizing ethylene, optionally with one or more α-olefin comonomers, in the presence of:(i) a solid catalyst component comprising titanium, magnesium, halogen and optionally an internal electron-donor compound,(ii) an aluminum alkyl compound, and(iii) an antistatic compound selected among the hydroxyesters with at least two free hydroxyl groups,wherein the weight ratio of aluminum alkyl compound to solid catalyst component is higher than 0.80 and the weight ratio of antistatic compound to aluminum alkyl compound is higher than 0.10.
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