-
公开(公告)号：US20240287216A1
公开(公告)日：2024-08-29
申请号：US18572456
申请日：2022-07-19
发明人： Serge EON
摘要： The present invention relates to a process for reducing volatiles in a polymer melt feed. The present invention also relates to a devolatilization apparatus for removing volatiles from a polymer melt feed.
-
公开(公告)号：US11905346B2
公开(公告)日：2024-02-20
申请号：US17484015
申请日：2021-09-24
发明人： Byoung Kyu Kwak , Sun Joo Kim , Hong Chan Kim , Kyung Jin Ma , Doh Yeon Park , Jae Eun Lee , Ho Seong Lee , Juan Carlos Estevez Videira , Manuel David Recasens Alvaro , In Su Lee , Wan Ju Jeong
IPC分类号： C08F2/01 , C08F2/06 , C08F6/00 , C08F6/10 , C08F210/02 , C08F220/04 , B01J8/00 , B01J19/00 , B01J19/06 , B01J19/24 , B01J8/22 , B01J20/30 , C08F220/08 , C08F6/06
CPC分类号： C08F210/02 , B01J8/228 , B01J19/0053 , B01J19/06 , B01J19/2465 , B01J20/3071 , C08F2/01 , C08F2/06 , C08F6/005 , C08F6/008 , C08F6/06 , C08F6/10 , C08F220/04 , C08F220/08 , B01J2208/00761 , B01J2219/00353 , B01J2219/00389 , B01J2219/00418 , C08F2800/20
摘要： The present invention relates to a method for producing an ethylene-based copolymer, and more particularly, to a method for producing an ethylene-based copolymer capable of increasing process efficiency by preventing plugging and corrosion of a facility. The method for producing an ethylene-based copolymer includes a producing mode and a washing mode of which one is selectively performed. The producing mode includes: a) hyper-compressing primary compressed ethylene, and a mixture including a carboxylic acid-containing comonomer and a polar solvent to produce a compressed material; b) reacting the compressed material to produce a reaction product including an ethylene-based copolymer; and c) separating and recovering unreacted residues from the reaction product and introducing the unreacted residues into the mixture of step a). The washing mode includes: re-supplying the compressed material produced in step a) to step a) as a mixture, without performing step b).
-
公开(公告)号：US20180207608A1
公开(公告)日：2018-07-26
申请号：US15745774
申请日：2016-07-08
CPC分类号： B01J19/20 , B01J19/1862 , C08F2/01 , C08F6/005
摘要： A polymer synthesis system has a polymerization reactor and a deliquifying-quench extruder downstream of and in fluid communication with the polymerization reactor. The polymerization reactor has an inlet and an outlet with a rotatable shaft positioned axially within the reactor. The deliquifying-quench extruder has an inlet and an outlet, with a shaft assembly positioned axially within the extruder. The shaft assembly includes multiple helical flight configurations and multiple processing zones defined by the multiple flight configurations. The processing zones include an extraction-compaction zone, a sealing zone downstream of the extraction-compaction zone, a vent-cooling zone downstream of the sealing zone, a quenching zone downstream of the vent-cooling zone, and a conveying zone downstream of the quenching zone.
-
公开(公告)号：US20170320983A1
公开(公告)日：2017-11-09
申请号：US15661543
申请日：2017-07-27
申请人： BASF SE
发明人： Thomas Daniel , Norbert Herfert , Stephan Bauer , Katrin Baumann , Birgit Reinhard , Jürgen Freiberg , Rudolf Schliwa
IPC分类号： C08F220/06 , C08F6/00 , B01J20/28 , B01J20/26 , A61L15/22 , A61L15/60 , A61L15/42 , A61L15/24 , C08L33/02
CPC分类号： C08F220/06 , A61L15/22 , A61L15/24 , A61L15/42 , A61L15/60 , B01J20/267 , B01J20/28023 , B01J20/2805 , C08F6/005 , C08L33/02 , C08L33/08 , C08F2222/1013
摘要： The present invention relates to a process for producing water-absorbent polymer particles by polymerizing droplets of a monomer solution comprising less than 0.3% by weight of persulfate and at least 0.05% by weight of azo initiator and thermal aftertreatment of the formed polymer particles at less than 100° C. in a fluidized bed for 60 to 300 minutes.
-
公开(公告)号：US09790292B2
公开(公告)日：2017-10-17
申请号：US15038099
申请日：2014-10-23
发明人： Sinyoung Kim , Seong Soo Lim , Suran Lee , Jaeho Kim , Sang Hong Shin
CPC分类号： C08F6/005 , C08C4/00 , C08F210/14 , C08J11/02 , C08J2323/08 , C08J2323/20 , Y02P20/582 , C08L23/0815 , C08F2/34 , C08F2500/08 , C08L23/04
摘要： Provided is a method of purifying polyolefin, the method including the step of contacting linear low-density polyethylene synthesized by a gas phase polymerization reaction with a purge gas containing an ethylene gas and an inert gas in a purge bin. According to this purification method, residual alkene monomers with high carbon numbers may be removed in a simpler and more efficient manner.
-
公开(公告)号：US09605092B2
公开(公告)日：2017-03-28
申请号：US14903372
申请日：2014-07-22
申请人： INEOS EUROPE AG
IPC分类号： C08F2/00 , C08F110/06 , C08F110/02 , C08F210/02 , C08F6/00
CPC分类号： C08F110/02 , C08F6/003 , C08F6/005 , C08F110/06 , C08F210/02 , Y02P20/582 , C08F2/001 , C08F2/14 , C08F2/01 , C08F210/14 , C08F2500/05 , C08F2500/07 , C08F210/16 , C08F2500/08 , C08L23/0815
摘要： Polymerization process, in particular for the polymerization of monomer selected from ethylene and propylene in a reaction system containing at least three reactors operated in series. The process includes (a) polymerizing monomer in a first reactor having a volume of at least 50 m3 to produce a first polymer, (b) passing the first polymer to a second reactor and polymerizing monomer in the second reactor to produce a second polymer containing the first polymer and polymer produced in the second reactor, and (c) passing the second polymer to a third reactor and polymerizing monomer in the third reactor to produce a third polymer containing the second polymer and polymer produced in the third reactor. The polymerizations are performed such that between 0.01 and 5 w % of the total mass of the third polymer is polymer produced in the second reactor.
-
公开(公告)号：US09605091B2
公开(公告)日：2017-03-28
申请号：US15141017
申请日：2016-04-28
申请人： Ineos Europe AG
CPC分类号： C08F6/005 , C07C7/00 , C08F2/01 , C08F2/06 , C08F6/001 , C08F10/00 , C08F210/16 , Y02P20/582 , C08L23/06 , C08F10/02 , C08F2/001 , C08F210/14 , C08F2500/05 , C08F2500/12
摘要： Process for enhancing the separation of monomer components from light components other than monomer by providing a first stream containing monomer and light components other than monomer and passing the first stream to a first separator at a first pressure to separate a gaseous second stream containing at least some of the light components other than monomer and provide a liquid third stream containing monomer. A portion of the third stream and a fourth stream containing monomer and light components other than monomer is passed to a second separator at a second pressure which is lower than the first pressure to separate a gaseous fifth stream containing at least some of the light components other than monomer from the fourth stream and provide a liquid sixth stream containing monomer.
-
公开(公告)号：US09567411B2
公开(公告)日：2017-02-14
申请号：US14929913
申请日：2015-11-02
申请人： INEOS EUROPE AG
IPC分类号： C08F6/24 , C08F6/00 , C08F2/01 , C08F2/14 , C08F210/16 , C08F2/06 , C07C7/00 , C08F10/00 , B01J19/18
CPC分类号： C08F6/005 , C07C7/00 , C08F2/01 , C08F2/06 , C08F6/001 , C08F10/00 , C08F210/16 , Y02P20/582 , C08L23/06 , C08F10/02 , C08F2/001 , C08F210/14 , C08F2500/05 , C08F2500/12
摘要： Process for polymerizing monomer in a reactor by withdrawing an effluent from the reactor which is a slurry of polymer solids in a liquid medium and contacting a first stream containing vapor derived from the effluent withdrawn from the reactor with a feed stream to the reactor. The first stream which has the majority of the vaporized components of the liquid medium in the effluent withdrawn from the reactor is brought into contact with the feedstream to the reactor at a pressure of 0.5 MPa or above and/or the first stream is separated from the polymer withdrawn from the reactor at a pressure of 0.5 MPa or above.
摘要翻译： 在反应器中聚合单体的方法是从反应器中排出流出物，反应器是聚合物固体在液体介质中的浆液，并将含有源自反应器的流出物的蒸气的第一流与进料流接触。 在从反应器排出的流出物中具有液体介质的大部分蒸发成分的第一流与0.5MPa或更高压力的进料流与反应器接触，和/或将第一流与 聚合物在0.5MPa或更高的压力下从反应器中取出。
-
公开(公告)号：US20160289347A1
公开(公告)日：2016-10-06
申请号：US15038099
申请日：2014-10-23
发明人： Sinyoung KIM , Seong Soo LIM , Suran LEE , Jaeho KIM , Sang Hong SHIN
IPC分类号： C08F6/00
CPC分类号： C08F6/005 , C08C4/00 , C08F210/14 , C08J11/02 , C08J2323/08 , C08J2323/20 , Y02P20/582 , C08L23/0815 , C08F2/34 , C08F2500/08 , C08L23/04
摘要： Provided is a method of purifying polyolefin, the method including the step of contacting linear low-density polyethylene synthesized by a gas phase polymerization reaction with a purge gas containing an ethylene gas and an inert gas in a purge bin. According to this purification method, residual alkene monomers with high carbon numbers may be removed in a simpler and more efficient manner.
摘要翻译： 提供一种聚烯烃的净化方法，该方法包括使通过气相聚合反应合成的线性低密度聚乙烯与含有乙烯气体和惰性气体的吹扫气体接触的步骤。 根据该纯化方法，可以以更简单和更有效的方式除去具有高碳数的残留烯烃单体。
-
10.发明授权Process for treating polyolefin particles obtained by gas-phase polymerization 有权用于处理通过气相聚合获得的聚烯烃颗粒的方法公开(公告)号：US09458259B2
公开(公告)日：2016-10-04
申请号：US14650532
申请日：2013-12-11
发明人： Giuseppe Penzo , Giulia Mei , Gabriele Mei , Antonio De Lucia , Pietro Baita
CPC分类号： C08F10/02 , B29B2013/005 , C08F6/005 , C08F6/02 , C08L23/04 , C08F210/16 , C08F210/14 , C08F2500/12 , C08F2500/24
摘要： 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.
-
-
-
-
-
-
-
-
-
搜索结果
295 条记录 (耗时 0.031 秒)
