DE68910627D1 - Gasphasen-Alpha-Olefinpolymerisationsverfahren in Anwesenheit eines Aktivitätshemmers. - Google Patents

Gasphasen-Alpha-Olefinpolymerisationsverfahren in Anwesenheit eines Aktivitätshemmers.

Info

Publication number
DE68910627D1
DE68910627D1 DE89308848T DE68910627T DE68910627D1 DE 68910627 D1 DE68910627 D1 DE 68910627D1 DE 89308848 T DE89308848 T DE 89308848T DE 68910627 T DE68910627 T DE 68910627T DE 68910627 D1 DE68910627 D1 DE 68910627D1
Authority
DE
Germany
Prior art keywords
gas phase
polymerization process
olefin polymerization
alpha olefin
activity inhibitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE89308848T
Other languages
English (en)
Other versions
DE68910627T2 (de
Inventor
Andre Dumain
Laszlo Havas
Jean Engel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BP Chemicals Ltd
Original Assignee
BP Chemicals Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26226876&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE68910627(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from FR8812066A external-priority patent/FR2636335B1/fr
Application filed by BP Chemicals Ltd filed Critical BP Chemicals Ltd
Application granted granted Critical
Publication of DE68910627D1 publication Critical patent/DE68910627D1/de
Publication of DE68910627T2 publication Critical patent/DE68910627T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00Processes of polymerisation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S526/00Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S526/901Monomer polymerized in vapor state in presence of transition metal containing catalyst

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polymerisation Methods In General (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyethers (AREA)
DE89308848T 1988-09-13 1989-08-31 Gasphasen-Alpha-Olefinpolymerisationsverfahren in Anwesenheit eines Aktivitätshemmers. Expired - Fee Related DE68910627T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812066A FR2636335B1 (fr) 1988-09-13 1988-09-13 Procede de polymerisation d'alpha-olefine en phase gazeuse en presence d'un agent ralentisseur d'activite
FR898905846A FR2646426B2 (fr) 1988-09-13 1989-04-27 Procede et appareillage de polymerisation d'alpha-olefine en phase gazeuse en presence d'un agent ralentisseur d'activite

Publications (2)

Publication Number Publication Date
DE68910627D1 true DE68910627D1 (de) 1993-12-16
DE68910627T2 DE68910627T2 (de) 1994-02-24

Family

ID=26226876

Family Applications (1)

Application Number Title Priority Date Filing Date
DE89308848T Expired - Fee Related DE68910627T2 (de) 1988-09-13 1989-08-31 Gasphasen-Alpha-Olefinpolymerisationsverfahren in Anwesenheit eines Aktivitätshemmers.

Country Status (16)

Country Link
US (1) US5066736A (de)
EP (1) EP0359444B1 (de)
JP (1) JP2981239B2 (de)
KR (1) KR0147070B1 (de)
AU (1) AU620641B2 (de)
CA (1) CA1333440C (de)
DE (1) DE68910627T2 (de)
DK (1) DK449189A (de)
EG (1) EG18770A (de)
ES (1) ES2045456T3 (de)
FI (1) FI96032C (de)
FR (1) FR2646426B2 (de)
HK (1) HK1007318A1 (de)
MY (1) MY104197A (de)
NO (1) NO174930C (de)
NZ (1) NZ230486A (de)

Families Citing this family (77)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473027A (en) * 1986-06-20 1995-12-05 Chevron Chemical Company Production of blow molding polyethylene resin
JP3204688B2 (ja) * 1991-06-25 2001-09-04 出光石油化学株式会社 エチレン重合体の製造方法
DE4019053A1 (de) * 1990-06-15 1991-12-19 Basf Ag Polymerisate des propylens mit breitem molmassenverhaeltnis q
US5336738A (en) * 1990-08-07 1994-08-09 Bp Chemicals Limited Kill-gas introduction to a fluidized bed reactor containing chromium oxide catalyst
FR2665704B1 (fr) * 1990-08-07 1994-04-08 Bp Chemicals Snc Procede pour arreter une reaction de (co-)polymerisation effectuee a l'aide d'un catalyseur a base d'oxyde de chrome.
GB9103527D0 (en) * 1991-02-20 1991-04-10 Exxon Chemical Patents Inc Hp catalyst killer
IT1246614B (it) 1991-06-03 1994-11-24 Himont Inc Procedimento per la polimerizzazione in fase gas delle olefine
US5227438A (en) * 1991-09-24 1993-07-13 Union Carbide Chemicals & Plastics Technology Corporation Process for the slowdown or termination of polymerization
EP0549252A1 (de) * 1991-12-23 1993-06-30 BP Chemicals Limited Verfahren zur Gasphase-Polymerisation von Alpha-Olefinen in einem Wirbelbettreaktor
IT1262933B (it) * 1992-01-31 1996-07-22 Montecatini Tecnologie Srl Processo per la polimerizzazione in fase gas di alfa-olefine
US5804678A (en) * 1993-07-13 1998-09-08 Mitsui Petrochemical Industries, Ltd. Process for gas phase polymerization of olefin
US5733988A (en) * 1994-06-29 1998-03-31 Union Carbide Chemicals & Plastics Technology Corporation Process for reducing polymer build-up in recycle lines and heat exchangers during polymerizations employing butadiene, isoprene, and/or styrene
US5625012A (en) * 1994-06-29 1997-04-29 Union Carbide Chemicals & Plastics Technology Corporation Process for reducing polymer build-up in recycle lines and heat exchangers during polymerization of alpha olefins
US5548042A (en) * 1994-08-19 1996-08-20 Union Carbide Chemical & Plastics Technology Corporation Process for the production of polypropylene
US5525678A (en) * 1994-09-22 1996-06-11 Mobil Oil Corporation Process for controlling the MWD of a broad/bimodal resin produced in a single reactor
EP0863922B1 (de) * 1995-12-01 2004-09-15 Chevron Phillips Chemical Company LP Polymerisationsverfahren
DE19621838A1 (de) * 1996-05-31 1997-12-04 Basf Ag Verfahren zur Herstellung von Polymerisaten von C¶2¶- bis C¶1¶¶2¶-Alkenen unter Zusatz eines Reaktionsverzögerers
AU4913597A (en) * 1996-11-01 1998-05-29 Union Carbide Chemicals & Plastics Technology Corporation Reduction of fouling in olefin polymerization systems
US5731381A (en) * 1996-11-01 1998-03-24 Union Carbide Chemicals & Plastics Technology Corporation Termination of gas phase polymerizations of conjugated dienes, vinyl-substituted aromatic compounds and mixtures thereof
US5844054A (en) * 1997-03-21 1998-12-01 Samples; Paul Kevin Process control in the presence of chromium based catalysts
DE19800020A1 (de) * 1998-01-05 1999-07-08 Basf Ag Kontinuierliches Gasphasenpolymerisationsverfahren
US6977283B1 (en) 1998-04-07 2005-12-20 Exxonmobil Chemical Patents Inc. Polymerization process
EP0959082A1 (de) * 1998-05-19 1999-11-24 Bp Chemicals S.N.C. Polymerisationsverfahren
EP0959081A1 (de) * 1998-05-19 1999-11-24 Bp Chemicals S.N.C. Polymerisationsverfahren in der Gasphase
US7354880B2 (en) * 1998-07-10 2008-04-08 Univation Technologies, Llc Catalyst composition and methods for its preparation and use in a polymerization process
KR100610968B1 (ko) 1998-10-27 2006-08-10 이스트만 케미칼 캄파니 올레핀의 중합 방법, 신규한 폴리에틸렌, 및 이로부터제조된 필름 및 제품
EP1514882A1 (de) * 1998-12-17 2005-03-16 Univation Technologies LLC Katalysatorsystem und Verfahren zu dessen Herstellung und dessen Verwendung in einem Polymerisationsverfahren
US6288181B1 (en) 1999-03-30 2001-09-11 Eastman Chemical Company Process for producing polyolefins
JP2002540265A (ja) 1999-03-30 2002-11-26 イーストマン ケミカル カンパニー ポリオレフィンの製造方法
US6313236B1 (en) 1999-03-30 2001-11-06 Eastman Chemical Company Process for producing polyolefins
US6300432B1 (en) 1999-03-30 2001-10-09 Eastman Chemical Company Process for producing polyolefins
WO2001016189A1 (en) 1999-08-31 2001-03-08 Eastman Chemical Company Process for producing polyolefins
US6191238B1 (en) 1999-08-31 2001-02-20 Eastman Chemical Company Process for producing polyolefins
US6187879B1 (en) 1999-08-31 2001-02-13 Eastman Chemical Company Process for producing polyolefins
JP3860702B2 (ja) * 2000-03-16 2006-12-20 株式会社プライムポリマー ポリオレフィンの製造方法および気相重合装置
EP1207170A1 (de) * 2000-11-20 2002-05-22 BP Chemicals S.N.C. Verfahren zur kontinuierlichen Gasphasen (Co-)Polymerisation von Olefinen in einem Fliessbettreaktor
US6593267B2 (en) 2000-12-18 2003-07-15 Univation Technologies, Llc Method for preparing a supported catalyst system and its use in a polymerization process
US6933258B2 (en) * 2000-12-19 2005-08-23 Univation Technologies, L.L.C. Catalyst composition and methods for its preparation and use in a polymerization process
US6365681B1 (en) 2001-01-16 2002-04-02 Union Carbide Chemicals & Plastics Technology Corporation Preventing upsets in polymerization reactors
DE10156202A1 (de) * 2001-11-15 2003-06-05 Basell Polyolefine Gmbh Kontinuierliches Gasphasenpolymerisationsverfahren
US6846884B2 (en) * 2002-09-27 2005-01-25 Union Carbide Chemicals & Plastics Technology Corporation Control of resin properties
EP1576016A4 (de) * 2002-12-27 2006-02-08 Univation Tech Llc Verfahren zum übergang zwischenziegler-natta-polymerisationskatalysatoren undsingle-site-polymerisationskatalysatoren auf alumoxan-basis
EP1611169B1 (de) * 2003-03-21 2010-06-02 Dow Global Technologies Inc. Verfahren zur herstellung von polyolefinen mit kontrollierter morphologie
US6759489B1 (en) 2003-05-20 2004-07-06 Eastern Petrochemical Co. Fluidized bed methods for making polymers
AU2004280327B2 (en) 2003-09-23 2009-11-05 Dow Global Technologies Inc. Catalyst composition for ethylene polymerization
US6828395B1 (en) 2003-10-15 2004-12-07 Univation Technologies, Llc Polymerization process and control of polymer composition properties
US7238756B2 (en) * 2003-10-15 2007-07-03 Univation Technologies, Llc Polymerization process and control of polymer composition properties
US20050148742A1 (en) * 2004-01-02 2005-07-07 Hagerty Robert O. Method for controlling sheeting in gas phase reactors
US20070073012A1 (en) * 2005-09-28 2007-03-29 Pannell Richard B Method for seed bed treatment before a polymerization reaction
US7985811B2 (en) * 2004-01-02 2011-07-26 Univation Technologies, Llc Method for controlling sheeting in gas phase reactors
US7683140B2 (en) 2004-05-20 2010-03-23 Univation Technologies, Llc Method for determining temperature value indicative of resin stickiness from data generated by polymerization reaction monitoring
TW200613325A (en) * 2004-05-20 2006-05-01 Exxonmobil Chemical Patents Inc Polymerization process
US7754830B2 (en) 2004-05-20 2010-07-13 Univation Technologies, Llc Polymerization reaction monitoring with determination of induced condensing agent concentration for preventing discontinuity events
KR101228401B1 (ko) 2004-10-14 2013-02-01 바셀 폴리올레핀 이탈리아 에스.알.엘 올레핀의 기체-상 중합 방법
WO2006107373A1 (en) 2005-03-31 2006-10-12 Exxonmobil Chemical Patents Inc. Processes for producing high density polyethylene
MX2009002495A (es) * 2006-09-07 2009-05-22 Univation Tech Llc Metodos para determinacion en linea del grado de pegajosidad de resina usando un modelo para la reduccion de la temperatura de inicio de fusion.
MX2009002494A (es) * 2006-09-07 2009-05-22 Univation Tech Llc Metodos para determinar el valor de temperatura indicativo de pegajosidad de resina a partir de datos generados por monitoreo de la reaccion de polimerizacion.
AU2006348445B2 (en) 2006-09-21 2011-03-10 Union Carbide Chemicals & Plastics Technology Llc Method of controlling properties in multimodal systems
WO2008066843A1 (en) * 2006-11-30 2008-06-05 Westlake Longview Corporation Gas distribution plate for fluidized-bed olefin polymerization reactors equipped with flowrate or pressure sensors to detect grid fouling
WO2009023111A1 (en) * 2007-08-16 2009-02-19 Univation Technologies, Llc Continuity additives and their use in polymerization processes
JP5661645B2 (ja) 2009-01-08 2015-01-28 ユニベーション・テクノロジーズ・エルエルシー ポリオレフィン重合プロセス用の添加剤
WO2010080871A1 (en) 2009-01-08 2010-07-15 Univation Technologies, Llc Additive for gas phase polymerization processes
WO2011029735A1 (en) 2009-09-11 2011-03-17 Basell Poliolefine Italia S.R.L. Process for the gas-phase polymerization of olefins
EP2519549A1 (de) 2009-12-29 2012-11-07 Basell Poliolefine Italia S.r.l. Verfahren zur herstellung von polyolefinfolien
KR101863039B1 (ko) 2010-09-28 2018-06-01 바젤 폴리올레핀 게엠베하 중합 반응기에 정전기 방지 화합물을 공급하는 방법
WO2012041811A1 (en) 2010-09-28 2012-04-05 Basell Polyolefine Gmbh Method for feeding an antistatic compound to a polymerization reactor
CN103347905B (zh) 2010-12-22 2015-12-16 尤尼威蒂恩技术有限责任公司 用于聚烯烃聚合方法的添加剂
EP2610269A1 (de) 2011-12-28 2013-07-03 Saudi Basic Industries Corporation Katalysatorzusammensetzung und Herstellungsverfahren dafür
EP2711379A1 (de) 2012-09-21 2014-03-26 Basell Poliolefine Italia S.r.l. Verfahren zur Gasphasenpolymerisation von Olefinen
EP2754678A1 (de) 2013-01-14 2014-07-16 Basell Poliolefine Italia S.r.l. Verfahren zur Herstellung von Ethylenpolymeren
EP2842912A1 (de) 2013-08-26 2015-03-04 Basell Poliolefine Italia S.r.l. Verfahren zur Verbesserung der Funktionsfähigkeit eines Olefinpolymerisationsreaktors
JP2016539234A (ja) 2013-12-09 2016-12-15 ユニベーション・テクノロジーズ・エルエルシー 重合プロセスへの重合添加剤の供給
RU2717314C2 (ru) 2015-08-04 2020-03-20 Базелл Полиолефин Италия С.Р.Л. Предварительно полимеризованные компоненты катализатора для полимеризации олефинов
EP3592780A1 (de) 2017-03-09 2020-01-15 ExxonMobil Chemical Patents Inc. Verfahren zur herstellung von polyethylenpolymeren
US11820841B2 (en) 2020-01-28 2023-11-21 Exxonmobil Chemical Patents Inc. Reducing accumulation of C6+ hydrocarbon components in polyolefin gas-phase reactors
CN115151576B (zh) 2020-02-26 2024-04-19 埃克森美孚化学专利公司 用于气相聚乙烯生产的高效c6不活泼物质排出
KR102513518B1 (ko) 2020-12-23 2023-03-22 디엘케미칼 주식회사 메탈로센 올레핀 중합 공정용 대전방지제를 이용한 올레핀 중합 방법

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1420408A1 (de) * 1957-02-19 1968-10-10 Bayer Ag Verfahren zur Polymerisation von AEthylen
US3067190A (en) * 1960-01-12 1962-12-04 Ruhrchemie Ag Process for the polymerization of aliphatic olefins
US3562357A (en) * 1968-12-11 1971-02-09 Mobil Oil Corp Method for increasing yield of copolymers of butene-1 with long chain olefins
DE2966150D1 (en) * 1978-03-23 1983-10-20 Ici Plc Gas-phase olefin polymerisation system and process for operating it
DE3366573D1 (en) * 1982-06-24 1986-11-06 Bp Chimie Sa Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed
FR2566781B1 (fr) * 1984-06-28 1986-11-14 Bp Chimie Sa Procede de polymerisation ou de copolymerisation d'alpha-olefines en lit fluidise, en presence d'un systeme catalytique ziegler-natta
SU1249025A1 (ru) * 1984-10-01 1986-08-07 Предприятие П/Я В-8296 Способ управлени процессом полимеризации или сополимеризации альфа-олефинов в газовой фазе
JPS61151211A (ja) * 1984-12-24 1986-07-09 Toa Nenryo Kogyo Kk エチレンの共重合方法
US4649128A (en) * 1985-11-21 1987-03-10 National Distillers And Chemical Corporation Deactivator for olefin polymerization catalyst
US4956426A (en) * 1986-07-24 1990-09-11 Union Carbide Chemicals And Plastics Company Inc. Process for controlled polymerization of stereospecific alpha-olefins having preselected isotacticity
US4727125A (en) * 1986-11-03 1988-02-23 Hercules Incorporated Thermally activated two component metathesis catalyst system
FR2618786B1 (fr) * 1987-07-31 1989-12-01 Bp Chimie Sa Procede de polymerisation d'olefines en phase gazeuse dans un reacteur a lit fluidise
US4803251A (en) * 1987-11-04 1989-02-07 Union Carbide Corporation Method for reducing sheeting during polymerization of alpha-olefins

Also Published As

Publication number Publication date
FR2646426A2 (fr) 1990-11-02
ES2045456T3 (es) 1994-01-16
FR2646426B2 (fr) 1991-08-16
NO893562L (no) 1990-03-14
HK1007318A1 (en) 1999-04-09
NZ230486A (en) 1990-10-26
DK449189D0 (da) 1989-09-12
FI96032C (fi) 1996-04-25
US5066736A (en) 1991-11-19
DE68910627T2 (de) 1994-02-24
JP2981239B2 (ja) 1999-11-22
FI894325A0 (fi) 1989-09-13
DK449189A (da) 1990-03-14
EP0359444B1 (de) 1993-11-10
FI96032B (fi) 1996-01-15
KR900004766A (ko) 1990-04-13
EG18770A (en) 1994-03-30
NO893562D0 (no) 1989-09-05
MY104197A (en) 1994-02-28
AU4099489A (en) 1990-03-22
FI894325A (fi) 1990-03-14
NO174930C (no) 1994-08-03
CA1333440C (en) 1994-12-06
EP0359444A1 (de) 1990-03-21
JPH02113004A (ja) 1990-04-25
NO174930B (no) 1994-04-25
AU620641B2 (en) 1992-02-20
KR0147070B1 (ko) 1998-08-17

Similar Documents

Publication Publication Date Title
DE68910627D1 (de) Gasphasen-Alpha-Olefinpolymerisationsverfahren in Anwesenheit eines Aktivitätshemmers.
BG94227A (bg) Метод за полимеризация на олефини в газова фаза
NO904047D0 (no) Fast katalysatorkomponent for polymerisering av olefiner og olefinpolymerisasjonskatalysator inneholdende samme.
NO893898L (no) Katalysatorer for polymerisering av olefiner.
IT8822150A0 (it) Componenti e catalizzatori per la polimerizzazione di olefine
ITRM910379A0 (it) Procedimento per la polimerizzazione in fase gas delle olefine.
DE69308209T2 (de) Polymerisation von alpha-olefinen
DE69016876D1 (de) Produktion von alpha-Olefinpolymeren.
IT8920329A0 (it) Componenti e catalizzatori per la polimerizzazione di olefine.
FI932580A0 (fi) Menetelmä C4-C40- -olefiinien polymeroimiseksi tai kopolymeroimiseksi muiden -olefiinien kanssa
DE68904083D1 (de) Hmg-coa-reduktaseinhibitoren.
NO174154C (no) Katalysatorkomponent, fremgangsmåte for fremstilling av denne, katalysator som omfatter komponenten, og anvendelse av denne ved polymerisering av olefiner
NO172496C (no) Katalysatorsystem for kopolymerisasjon av etylen og alfa-olefiner og fremgangsmaate for fremstilling av etylen-alfa-olefinkopolymer ved anvendelse av katalysatorsystemet
DE68901091D1 (de) Hmg-coa-reduktaseinhibitoren.
DE68906566T2 (de) Dimerisierung von niedrigen alpha-olefinen.
DE69009372D1 (de) Verringerung des Wellenwiderstandes eines Schiffes.
DE69023050T2 (de) Alpha-Olefinverfahren.
FI961575A0 (fi) Menetelmä olefiinin polymeroimiseksi halogeenimetalloseeniä sisältävän katalyyttijärjestelmän läsnäollessa
DE69102198T2 (de) Vorbehandlung eines Olefin-Hydratisierungskatalysators.
ATE97134T1 (de) Gasphasen-alpha-olefinpolymerisationsverfahren in anwesenheit eines aktivitaetshemmers.
DE68912725D1 (de) Produzierung von Alpha-Olefinpolymeren.
DE58904126D1 (de) Fachboden eines verkaufsregals.
FI93828C (fi) Menetelmä olefiiniseoksien oligomeroimiseksi, menetelmällä valmistettu oligomeeri ja sen käyttö
FI931989A (fi) Katalyytti olefiinien polymerisointia varten
IT7826399A0 (it) Procedimento per la polimerizzazione in fase gas di miscele di etilene ed alfa-olefine.

Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee