公开(公告)号：US20150322178A1

公开(公告)日：2015-11-12

申请号：US14650532

申请日：2013-12-11

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Giulia Mei ,  Gabriele Mei ,  Antonio De Lucia ,  Pietro Baita

IPC: C08F10/02

CPC classification number: C08F10/02 ,  B29B2013/005 ,  C08F6/005 ,  C08F6/02 ,  C08L23/04 ,  C08F210/16 ,  C08F210/14 ,  C08F2500/12 ,  C08F2500/24

Abstract: Process for treating polyolefin particles obtained by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, the process comprising the steps of a) discharging the polyolefin particles continuously or discontinuously from the gas-phase polymerization reactor and transferring the particles to a first degassing vessel; b) contacting therein the polyolefin particles with a gaseous stream comprising at least 85 mol-% of C3-C5 alkane while the polyolefin particles have an average residence time in the first degassing vessel of from 5 minutes to 5 hours; c) transferring the polyolefin particles to a second degassing vessel; d) contacting therein the polyolefin particles with a stream comprising nitrogen and steam while the polyolefin particles have an average residence time in the second degassing vessel of from 5 minutes to 2 hours, wherein the contacting is carried out at conditions under which no condensation of water occurs; e) transferring the polyolefin particles to a third degassing vessel; f) contacting therein the polyolefin particles with a stream of nitrogen while the polyolefin particles have an average residence time in the third degassing vessel of from 5 minutes to 8 hours, and processes for preparing polyolefin polymers by gas-phase polymerization of one or more olefins in the presence of a polymerization catalyst system and a C3-C5 alkane as polymerization diluent in a gas-phase polymerization reactor, wherein the obtained polyolefin particles are subjected to such a treating process.

Abstract translation: 在气相聚合反应器中，在聚合催化剂体系和C3-C5烷烃作为聚合稀释剂的存在下，通过一种或多种烯烃的气相聚合得到的聚烯烃颗粒的处理方法，该方法包括以下步骤：a） 聚烯烃颗粒从气相聚合反应器连续或不连续地转移并转移到第一脱气容器中; b）使聚烯烃颗粒与包含至少85mol％的C 3 -C 5烷烃的气流接触，同时聚烯烃颗粒在第一脱气容器中的平均停留时间为5分钟至5小时; c）将聚烯烃颗粒转移到第二脱气容器; d）使聚烯烃颗粒与包含氮气和蒸汽的物流接触，同时聚烯烃颗粒在第二脱气容器中的平均停留时间为5分钟至2小时，其中接触是在没有水冷凝的条件下进行的 发生; e）将聚烯烃颗粒转移到第三脱气容器; f）使聚烯烃颗粒与氮气流接触，同时聚烯烃颗粒在第三脱气容器中的平均停留时间为5分钟至8小时，以及通过一种或多种烯烃的气相聚合制备聚烯烃聚合物的方法 在气相聚合反应器中存在聚合催化剂体系和作为聚合稀释剂的C 3 -C 5烷烃的情况下，将得到的聚烯烃颗粒进行这样的处理。

公开(公告)号：US20150274866A1

公开(公告)日：2015-10-01

申请号：US14437456

申请日：2013-10-22

Applicant: BASELL POLYOLEFINE GMBH

Inventor： Iakovos Vittorias ,  Jens Wiesecke ,  Bernd Lothar Marczinke ,  Gerhardus Meier ,  Ulf Schüller ,  Volker Dolle ,  Johannes-Friedrich Enderle ,  Dieter Lilge ,  Barbara Gall

IPC: C08F210/16 ,  C08J5/00

CPC classification number: C08L23/06 ,  B29C49/00 ,  C08F210/16 ,  C08J5/00 ,  C08J2323/06 ,  C08J2323/08 ,  C08J2423/06 ,  C08J2423/08 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02

Abstract: Polyethylene composition with improved swell ratio and mechanical properties, particularly suited for preparing blow-moulded articles, said composition having the following features:1) density from 0.952 to 0.960 g/cm3; 2) ratio MIF/MIP from 17 to 30; 3) Shear-Induced Crystallization Index SIC from 2.5 to 5.0.

Abstract translation: 所述组合物具有以下特征：1）密度为0.952至0.960g / cm3;具有改进的膨胀比和机械性能的聚乙烯组合物，特别适用于制备吹塑制品。 2）比例MIF / MIP从17到30; 3）剪切诱导结晶指数SIC为2.5〜5.0。

公开(公告)号：US20150112038A1

公开(公告)日：2015-04-23

申请号：US14406856

申请日：2013-06-13

Applicant: Basell Polyolefine GmbH

Inventor： Holger Strecker ,  Manfred Hecker ,  Rainer Karer ,  Axel Hamann ,  Maria De Lange

IPC: B01J8/18 ,  C08F10/02

CPC classification number: B01J8/1836 ,  B01J8/1809 ,  B01J2208/00256 ,  C08F10/02 ,  C08F110/02 ,  C08F210/16 ,  G05D7/0652 ,  G05D23/1931 ,  C08F2/34

Abstract: A method for controlling the temperature in a polymerization reactor equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger, which is cooled by a cooling medium, which is conveyed in a cooling system through the heat-exchanger, and feeding the reactor gas back to the reactor by adjusting the temperature of the cooling medium entering the heat exchanger, wherein the temperature of the cooling medium entering the heat exchanger is controlled by adjusting the flow rate of the cooling medium in a part of the cooling system by a flow control system comprising two continuously operating flow control devices of different size, which are connected in parallel, a process for polymerizing olefins and a process for controlling the flow rate of a fluid medium.

Abstract translation: 一种用于控制聚合反应器中的温度的方法，该聚合反应器配备有用于从反应器中排出反应器气体的循环气体管线，引导反应器气体通过热交换器，该热交换器由冷却介质冷却，冷却介质在冷却系统中通过 热交换器，并且通过调节进入热交换器的冷却介质的温度将反应器气体反馈回反应器，其中进入热交换器的冷却介质的温度通过调节冷却介质的流量来控制 通过流量控制系统的一部分，其包括两个并联连接的不同尺寸的连续操作的流量控制装置，用于聚合烯烃的方法和用于控制流体介质的流速的方法。

公开(公告)号：US20140243475A1

公开(公告)日：2014-08-28

申请号：US14191090

申请日：2014-02-26

Applicant: Basell Polyolefine GmbH ,  Equistar Chemicals, LP

Inventor： Harilaos Mavridis ,  Gerhardus Meier ,  Ulf Schueller ,  Diana Doetsch ,  Bernd Marczinke ,  Iakovos Vittorias

IPC: C08L23/06 ,  C08L23/08

CPC classification number: C08L23/06 ,  C08L23/08 ,  C08L23/0815 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02 ,  Y02P20/52 ,  Y10S526/905 ,  C08F210/16 ,  C08F2/001 ,  C08F110/02 ,  C08F2500/12 ,  C08F2500/07 ,  C08F210/14 ,  C08F2500/05 ,  C08F2500/14 ,  C08F2500/17 ,  C08F2500/09 ,  C08F2/34 ,  C08F10/02 ,  C08F4/6543 ,  C08F4/6492

Abstract: Embodiments of the present disclosure relate to a method of preparing polyethylene compositions comprising polymerizing ethylene in a first gas-phase reactor and polymerizing ethylene in a second gas-phase reactor in the presence of hydrogen; wherein at least one of the first or second gas-phase reactors comprises a first and second polymerization zone; wherein a hydrogen pressure of the first and second polymerization zones are different such that at least a portion of the second ethylene cycles through the first and second polymerization zones and a gas mixture of each polymerization zone is partially or totally prevented from entering the other zone.

Abstract translation: 本公开的实施方案涉及制备聚乙烯组合物的方法，其包括在第一气相反应器中聚合乙烯并在第二气相反应器中在氢的存在下聚合乙烯; 其中所述第一或第二气相反应器中的至少一个包括第一和第二聚合区; 其中第一和第二聚合区的氢气压力是不同的，使得至少一部分第二乙烯循环通过第一和第二聚合区以及每个聚合区的气体混合物被部分或完全防止进入另一个区。

公开(公告)号：US20040220358A1

公开(公告)日：2004-11-04

申请号：US10480244

申请日：2003-12-09

Applicant: Basell Polyolefine GmbH

Inventor： Wilhelm Zoller

IPC: C08F002/00

CPC classification number: C08F10/02 ,  C08F110/02 ,  C08F4/34 ,  C08F2/00 ,  C08F2/001 ,  C08F2500/12

Abstract: The invention relates to a process for preparing ethylene homopolymers and ethylene copolymers in a tube reactor at pressures above 1000 bar and temperatures in the range from 120 to 400null C. by free-radical addition polymerization, in which first small amounts of free-radical chain initiator are supplied to a streaming flow medium comprising ethylene, molar mass regulator, and, if desired, polyethylene, after which the polymerization takes place. The invention takes place at a pressure in the range from 2000 to 3500 bar and comprises reaction mixture within the tube reactor passing through a temperature profile in the range from 100 to 350null C.

公开(公告)号：US20040097669A1

公开(公告)日：2004-05-20

申请号：US10700095

申请日：2003-11-03

Applicant: Basell Polyolefine GmbH

Inventor： Tiziano Dall'Occo ,  Ofelia Fusco ,  Maurizio Galimberti ,  Ilya Nifant'ev ,  Ilya Laishevtsev

IPC: C08F004/44

CPC classification number: C07F17/00 ,  C07F7/0805 ,  C07F7/0814 ,  C08F4/65912 ,  C08F10/02 ,  C08F210/16 ,  C08F210/18 ,  Y10S526/943 ,  C08F4/65927 ,  C08F210/06 ,  C08F2500/20 ,  C08F2500/17 ,  C08F210/14 ,  C08F2500/25

Abstract: Ethylene based polymers having high molecular weights can be obtained in high yields at temperatures of industrial interest, by carrying out the polymerization reaction in the presence of catalysts comprising silicon bridged metallocenes having a particular ligand system containing a heteroatom.

公开(公告)号：US12257767B2

公开(公告)日：2025-03-25

申请号：US17766442

申请日：2020-09-28

Applicant: Basell Polyolefine GmbH ,  Albert-Ludwigs-Universität Freiburg

Inventor： Carl Schirmeister ,  Karsten Schmitz ,  Yannic Kessler ,  Rainer Köhler ,  Erik Licht ,  Shahram Mihan ,  Jürgen Rohrmann ,  Dieter Langenfelder ,  Rolf Muelhaupt ,  Timo Hees

IPC: B29C64/118 ,  B29K23/00 ,  B29K25/00 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08K7/14 ,  C08L23/0807 ,  C08L23/12 ,  C08L23/16 ,  C08L25/08 ,  C08L51/06 ,  C08L53/00

Abstract: A process for producing articles with an extrusion-based additive manufacturing system using a consumable filament made from or containing a propylene polymer composition made from or containing: A) from 20% to 60% by weight of a heterophasic propylene copolymer; B) from 5% to 33% by weight of a propylene homopolymer or copolymer, wherein the copolymer contains up to 5% by weight of an alpha olefin; C) from 2% to 15% by weight of an elastomeric block copolymer made from or containing styrene; D) from 4% to 32% by weight of an elastomeric ethylene copolymer; E) from 5% to 50% by weight of a glass material as filler; and F) from 0.1% to 5% by weight of compatibilizer.

公开(公告)号：US20240271876A1

公开(公告)日：2024-08-15

申请号：US18568147

申请日：2022-06-07

Applicant: Basell Polyolefine GmbH

Inventor： Pier Luigi Di Federico ,  Riccardo Rinaldi ,  Gian Luca Bonaccorsi ,  Giuseppe Penzo ,  Maurizio Dorini

IPC: F28D7/16 ,  C08F2/34 ,  F28D1/053 ,  F28F1/00 ,  F28F9/02

CPC classification number: F28D7/163 ,  C08F2/34 ,  F28D1/053 ,  F28F1/006 ,  F28F2009/029

Abstract: A multitubular heat exchanger for cooling a gas stream. including an inlet chamber: a bundle of tubes encased in a shell structure: and an outlet chamber, wherein (a) each tube has an inlet with a diameter of d1: a longitudinal middle part with a diameter of d2: an outlet: and (b) d1 is larger than d2.

公开(公告)号：US11976183B1

公开(公告)日：2024-05-07

申请号：US18083686

申请日：2022-12-19

Applicant: Basell Polyolefine GmbH

Inventor： Timo Hees ,  Andreas Maus ,  Pascal Rebmann ,  Diana Doetsch ,  Katharina Elsas ,  Harilaos Mavridis ,  Gerhardus Meier

IPC: C08L23/06

CPC classification number: C08L23/06 ,  C08L2205/025 ,  C08L2207/04 ,  C08L2207/066 ,  C08L2207/20

Abstract: A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE.

公开(公告)号：US20240075450A1

公开(公告)日：2024-03-07

申请号：US18256065

申请日：2021-12-07

Applicant: Basell Polyolefine GmbH

Inventor： Giuseppe Penzo ,  Maurizio Dorini ,  Riccardo Rinaldi ,  Enrico Balestra ,  Gian Luca Bonaccorsi

IPC: B01J19/24 ,  B01J4/00 ,  B01J8/18

CPC classification number: B01J19/2435 ,  B01J4/001 ,  B01J8/1854 ,  B01J19/2405 ,  B01J2204/002 ,  B01J2208/00991 ,  B01J2219/185

Abstract: A reactor for carrying out a gas-phase olefin polymerization in the presence of a polymerization catalyst, made from or containing (i) a first polymerization zone adapted and arranged for growing polymer particles to flow upward under fast fluidization or transport conditions, (ii) a second polymerization zone adapted and arranged for the growing polymer particles to flow downward, and (iii) a set of bars for introducing feedstock or a barrier stream into the reactor, wherein each bar has (a) a hollow space along the length of the bar, (b) a particle deviating top, and (c) a multiplicity of openings arranged along the bottom half of the periphery of the bar.