DE69224242T2 - Verfahren zur Verbesserung der oxidativen thermischen Stabilität von Ethylenpolymeren - Google Patents

Verfahren zur Verbesserung der oxidativen thermischen Stabilität von Ethylenpolymeren

Info

Publication number
DE69224242T2
DE69224242T2 DE69224242T DE69224242T DE69224242T2 DE 69224242 T2 DE69224242 T2 DE 69224242T2 DE 69224242 T DE69224242 T DE 69224242T DE 69224242 T DE69224242 T DE 69224242T DE 69224242 T2 DE69224242 T2 DE 69224242T2
Authority
DE
Germany
Prior art keywords
improving
thermal stability
ethylene polymers
oxidative thermal
oxidative
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.)
Revoked
Application number
DE69224242T
Other languages
English (en)
Other versions
DE69224242D1 (de
Inventor
Morgan Hughes
Michael Rowland
Chad Strait
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.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
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=24664075&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69224242(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of DE69224242D1 publication Critical patent/DE69224242D1/de
Application granted granted Critical
Publication of DE69224242T2 publication Critical patent/DE69224242T2/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F6/00—Post-polymerisation treatments
    • C08F6/001—Removal of residual monomers by physical means
    • C08F6/005—Removal of residual monomers by physical means from solid polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/76—Venting, drying means; Degassing means
    • B29C48/762—Vapour stripping
DE69224242T 1991-03-04 1992-03-04 Verfahren zur Verbesserung der oxidativen thermischen Stabilität von Ethylenpolymeren Revoked DE69224242T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66399591A 1991-03-04 1991-03-04
PCT/US1992/001720 WO1992015621A1 (en) 1991-03-04 1992-03-04 Method of improving the oxidative thermal stability of ethylene polymers

Publications (2)

Publication Number Publication Date
DE69224242D1 DE69224242D1 (de) 1998-03-05
DE69224242T2 true DE69224242T2 (de) 1998-05-14

Family

ID=24664075

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224242T Revoked DE69224242T2 (de) 1991-03-04 1992-03-04 Verfahren zur Verbesserung der oxidativen thermischen Stabilität von Ethylenpolymeren

Country Status (9)

Country Link
US (1) US5756659A (de)
EP (1) EP0527225B1 (de)
JP (1) JP3174915B2 (de)
CA (1) CA2081105C (de)
DE (1) DE69224242T2 (de)
ES (1) ES2111635T3 (de)
FI (1) FI924965A0 (de)
TW (1) TW246679B (de)
WO (1) WO1992015621A1 (de)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0169505B1 (ko) * 1992-09-11 1999-01-15 오오쓰끼 아끼히꼬 약제 포장용 폴리올레핀 포장재, 그의 제조방법 및 약제 포장용 용기
US5442041A (en) * 1995-01-19 1995-08-15 Arco Chemical Technology, L.P. Removal of volatile substances from thermoplastic resins
US5521275A (en) * 1995-09-05 1996-05-28 General Electric Company Method for improving catalyst efficiency during polycarbonate redistribution
US5861474A (en) * 1996-07-23 1999-01-19 The Dow Chemical Company Polymer devolatilization
US6576131B1 (en) * 1997-12-16 2003-06-10 Flint Ink Corporation Process and apparatus for changing the wetting agent of pigments
US6160060A (en) * 1998-08-04 2000-12-12 Eastman Chemical Company Process for the synthesis of high molecular weight predominantly amorphous polymers with improved color and adhesive properties
US6022946A (en) * 1998-12-23 2000-02-08 Union Carbide Chemicals & Plastics Technology Corporation Process for deactivation of polyolefin compositions utilizing carbon dioxide as a deactivation agent
DE60015672T2 (de) * 1999-08-27 2005-12-01 Rohm And Haas Co. Verfahren zum Abstrippen von Polymerdispersionen oder Polymerlösungen
US6348091B1 (en) 1999-09-17 2002-02-19 Flint Ink Corporation Process and apparatus for preparing pigment flush in response to a material property value
KR20040034251A (ko) * 2002-10-21 2004-04-28 삼성에스디아이 주식회사 전계방출소자
US7645474B1 (en) * 2003-07-31 2010-01-12 Advanced Cardiovascular Systems, Inc. Method and system of purifying polymers for use with implantable medical devices
US7785512B1 (en) 2003-07-31 2010-08-31 Advanced Cardiovascular Systems, Inc. Method and system of controlled temperature mixing and molding of polymers with active agents for implantable medical devices
US8779053B2 (en) 2003-08-25 2014-07-15 Dow Global Technologies Llc Coating compositions
US8946329B2 (en) 2003-08-25 2015-02-03 Dow Global Technologies Llc Coating compositions
US7763676B2 (en) * 2003-08-25 2010-07-27 Dow Global Technologies Inc. Aqueous polymer dispersions and products from those dispersions
US8158711B2 (en) * 2003-08-25 2012-04-17 Dow Global Technologies Llc Aqueous dispersion, its production method, and its use
US7803865B2 (en) * 2003-08-25 2010-09-28 Dow Global Technologies Inc. Aqueous dispersion, its production method, and its use
TW200517426A (en) 2003-08-25 2005-06-01 Dow Global Technologies Inc Aqueous dispersion, its production method, and its use
US9169406B2 (en) 2003-08-25 2015-10-27 Dow Global Technologies Llc Coating compositions
US8349929B2 (en) * 2003-08-25 2013-01-08 Dow Global Technologies Llc Coating composition and articles made therefrom
US7947776B2 (en) 2003-08-25 2011-05-24 Dow Global Technologies Llc Aqueous dispersion, its production method, and its use
US8722787B2 (en) 2003-08-25 2014-05-13 Dow Global Technologies Llc Coating composition and articles made therefrom
US8357749B2 (en) * 2003-08-25 2013-01-22 Dow Global Technologies Llc Coating composition and articles made therefrom
JP5038896B2 (ja) * 2004-08-17 2012-10-03 フリント グループ インコーポレイテッド 有機色素分散およびインクを製造する方法
US8287949B2 (en) 2005-07-07 2012-10-16 Dow Global Technologies Inc. Aqueous dispersions
CN101068667A (zh) * 2005-07-07 2007-11-07 陶氏环球技术公司 长纤维增强热塑性浓缩物及其制备方法
US8043713B2 (en) * 2005-12-15 2011-10-25 Dow Global Technologies Llc Compositions and aqueous dispersions
US8029646B2 (en) 2005-12-15 2011-10-04 Dow Global Technologies Llc Cellulose articles containing an additive composition
US7528080B2 (en) * 2005-12-15 2009-05-05 Dow Global Technologies, Inc. Aqueous polyolefin dispersions for textile impregnation
US20070243331A1 (en) * 2006-02-17 2007-10-18 Dow Global Technologies Inc. Heat sealable compositions from aqueous dispersions
US8007978B2 (en) 2006-03-03 2011-08-30 Dow Global Technologies Llc Aqueous dispersions for use as toners
US9547246B2 (en) * 2006-03-03 2017-01-17 Dow Global Technologies Llc Aqueous dispersions for use as toners
US8916640B2 (en) * 2006-07-06 2014-12-23 Dow Global Technologies Llc Blended polyolefin dispersions
US8785531B2 (en) * 2006-07-06 2014-07-22 Dow Global Technologies Llc Dispersions of olefin block copolymers
EP2066744B1 (de) * 2006-09-11 2018-07-11 Dow Global Technologies LLC Für harzbeschichteten sand verwendete polyolefindispersions-technologie
US8476326B2 (en) * 2006-09-22 2013-07-02 Dow Global Technologies Llc Fibrillated polyolefin foam
US20080118728A1 (en) * 2006-10-20 2008-05-22 Dow Global Technologies Inc. Aqueous dispersions disposed on glass-based fibers and glass-containing substrates
MX2009004459A (es) 2006-10-25 2009-08-24 Dow Global Technologies Inc Dispersiones, espumajos o espumas de poliolefina.
KR101408452B1 (ko) 2006-11-02 2014-06-17 다우 글로벌 테크놀로지스 엘엘씨 고품질 이오노머의 제조 방법
EP2109641B1 (de) * 2007-01-17 2017-03-01 AgroFresh Inc. Freisetzung von ethylenblock- und/oder förderungsmitteln
EP2115213A1 (de) * 2007-02-08 2009-11-11 Dow Global Technologies Inc. Flexible und leitfähige polymerfolie
JP2011501764A (ja) * 2007-09-28 2011-01-13 ダウ グローバル テクノロジーズ インコーポレイティド 高結晶化度オレフィン類の分散液
CN102084053A (zh) * 2007-10-25 2011-06-01 陶氏环球技术公司 用于多孔基质的聚烯烃分散技术
US8859661B2 (en) 2007-11-15 2014-10-14 Dow Global Technologies Llc Coating composition, a coated article, and method of forming such articles
EP2212390B1 (de) * 2007-11-15 2014-04-30 Dow Global Technologies LLC Beschichtungszusammensetzung, beschichteter artikel und verfahren zu ihrer herstellung
US8349531B2 (en) * 2007-11-29 2013-01-08 Dow Global Technologies Llc Compounds and methods of forming compounds useful as a toner
CN101945756B (zh) 2007-12-21 2014-09-17 陶氏环球技术有限责任公司 地毯，地毯衬垫和使用烯烃嵌段共聚物制备它们的方法
WO2010075251A1 (en) 2008-12-22 2010-07-01 Dow Global Technologies Inc. Woven carpet coating compounds, associated methods of use, and articles made therefrom
CN103380465B (zh) 2010-12-29 2016-03-09 陶氏环球技术有限责任公司 制备缆线加强件的方法
RU2606625C2 (ru) 2011-06-10 2017-01-10 ДАУ ГЛОБАЛ ТЕКНОЛОДЖИЗ ЭлЭлСи Способ получения композиции водного понизителя температуры застывания в виде дисперсии
EP2551298B1 (de) 2011-07-27 2014-12-31 Dow Global Technologies LLC Redispergierbares Polymerpulver aus Polyolefindispersionen und dessen Verwendung bei Konstruktionsanwendungen
JP6352256B2 (ja) 2012-06-29 2018-07-04 ダウ グローバル テクノロジーズ エルエルシー エポキシ樹脂ブレンド分散体およびその分散体の調製方法
EP2922925B1 (de) 2012-12-28 2019-12-04 Dow Global Technologies LLC Beschichtungszusammensetzungen
US9938413B2 (en) 2012-12-28 2018-04-10 Dow Global Technologies Llc Coating composition and articles made therefrom
EP2945994B1 (de) 2013-01-18 2018-07-11 Basf Se Beschichtungszusammensetzungen auf basis von acryldispersionen
BR112016004061A2 (pt) 2013-08-29 2017-09-12 Dow Global Technologies Llc um processo para produzir uma dispersão aquosa, uma dispersão aquosa assim produzida e uma composição de revestimento que compreende a dispersão aquosa
CN106457752A (zh) 2013-12-30 2017-02-22 艾利丹尼森公司 可堆肥膜和可堆肥标签
KR20170030092A (ko) 2014-07-17 2017-03-16 다우 글로벌 테크놀로지스 엘엘씨 에틸셀룰로오스 분산물 및 필름
JP2017524053A (ja) 2014-08-15 2017-08-24 ダウ グローバル テクノロジーズ エルエルシー エチルセルロース分散体及び粉末
CN106715542A (zh) 2014-09-30 2017-05-24 陶氏环球技术有限责任公司 具有聚合物添加剂的水性乙基纤维素分散液
KR101568798B1 (ko) * 2015-01-15 2015-11-12 주식회사 티알켐텍 줄눈 보수용 스크래퍼
CN107429106B (zh) 2015-03-18 2020-03-31 陶氏环球技术有限责任公司 制作弹性体聚烯烃外壳的方法
WO2016160228A1 (en) 2015-03-31 2016-10-06 Dow Global Technologies Llc Spray dried polyolefin elastomer powder for rotational molding processes
BR112018013610A2 (pt) 2016-01-05 2019-01-22 Dow Global Technologies Llc compósitos para tubulações curadas no local
EP3468762A1 (de) 2016-06-08 2019-04-17 Dow Global Technologies, LLC Verfahren zur herstellung eines verbundverkleidungsteils für kraftfahrzeuge
CN110662796A (zh) 2017-06-06 2020-01-07 陶氏环球技术有限责任公司 制造汽车装饰复合部件的方法
CN111132825A (zh) 2017-09-27 2020-05-08 陶氏环球技术有限责任公司 原位固化管的耐磨柔性复合材料和多层管衬垫
WO2019113142A1 (en) 2017-12-06 2019-06-13 Dow Global Technologies Llc Flotation separation aid useful for collection of mineral ore fines
CN112703131B (zh) 2018-10-17 2024-01-30 陶氏环球技术有限责任公司 涂料组合物、经涂布织物、制造经涂布织物的方法以及由经涂布织物制成的制品
US20220001829A1 (en) 2018-10-17 2022-01-06 Dow Global Technologies Llc A coating composition, a coated fabric, a method of making a coated fabric, and an article made from the coated fabric
WO2020081279A1 (en) 2018-10-17 2020-04-23 Dow Global Technologies Llc A coating composition, a coated fabric, a method of making a coated fabric, and an article made from the coated fabric
US20220372340A1 (en) * 2019-02-26 2022-11-24 Moresco Corporation Method for producing hot melt adhesive and hot melt adhesive
EP3913029A4 (de) * 2019-02-26 2022-03-16 Moresco Corporation Verfahren zur herstellung eines ethylen-vinylacetat-schmelzklebstoffs sowie schmelzklebstoff

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3156009A (en) * 1960-12-30 1964-11-10 Standard Oil Co Devolatilizing extruder
US3476736A (en) * 1966-04-14 1969-11-04 Phillips Petroleum Co Solvent removal from polyolefin in vented extruder with water addition
US3799235A (en) * 1970-11-27 1974-03-26 Firestone Tire & Rubber Co Method and apparatus for desolventizing elastomers
US3799234A (en) * 1971-02-22 1974-03-26 Welding Engineers Countercurrent vapor stripping in screw devolatilizer
US3917507A (en) * 1971-02-22 1975-11-04 Welding Engineers Countercurrent combined liquid and vapor stripping in screw devolatilizer
US3992500A (en) * 1974-06-07 1976-11-16 Koehring Company Vented extruder
JPS5111882A (en) * 1974-07-20 1976-01-30 Sumitomo Chemical Co Mihannotanryotaio jokyosuruhoho
JPS5249267A (en) * 1975-10-17 1977-04-20 Japan Steel Works Ltd Degassing modifying extruder
US4107422A (en) * 1977-02-02 1978-08-15 Phillips Petroleum Company Solvent removal from polymer solutions
DE2800632C3 (de) * 1978-01-07 1981-02-19 Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover Schneckenstrangpresse für thermoplastische Kunststoffe
US4690981A (en) * 1983-03-21 1987-09-01 E. I. Du Pont De Nemours And Company Ionomers having improved low temperature properties
DE3310676A1 (de) * 1983-03-24 1984-09-27 Basf Ag, 6700 Ludwigshafen Verfahren und vorrichtung zum entfernen von fluechtigen anteilen aus polymerenschmelzen oder paste
US4927888A (en) * 1986-09-05 1990-05-22 The Dow Chemical Company Maleic anhydride graft copolymers having low yellowness index and films containing the same
JPH0621130B2 (ja) * 1985-04-09 1994-03-23 三菱油化株式会社 アイオノマ−樹脂の製造法
FR2598350B1 (fr) * 1986-05-06 1989-11-17 Bp Chimie Sa Procede et dispositif pour degazer et pour transformer en granules des particules de polyolefines obtenues par polymerisation en phase gazeuse
US4909898A (en) * 1986-10-01 1990-03-20 Polysar Limited Polymer recovery from solution
JP2635354B2 (ja) * 1988-03-02 1997-07-30 住友ゴム工業株式会社 変性アイオノマー樹脂の製法
DE3815487A1 (de) * 1988-05-06 1989-11-16 Basf Ag Verfahren zur niederdruckcopolymerisation von ethylen mit (alpha)-olefinen und ethylencopolymerisate mit niederem restmonomerengehalt
US4958006A (en) * 1988-06-28 1990-09-18 Union Carbide Chemicals And Plastics Inc. Fluidized bed product discharge process
DE3822069A1 (de) * 1988-06-30 1990-01-18 Basf Ag Verfahren zur ionischen vernetzung eines ethylencopolymerisates, ionisch vernetzte ethylencopolymerisate und deren verwendung als haftvermittler, spritzgussartikel oder beschichtungsfolie
US4952672A (en) * 1988-08-11 1990-08-28 The Dow Chemical Company Method for the devolatilization of thermoplastic materials
US4944906A (en) * 1988-10-11 1990-07-31 Spirex Corporation Methods of injection molding and extruding wet hygroscopic ionomers
DE3840293A1 (de) * 1988-11-30 1990-05-31 Werner & Pfleiderer Verfahren zum entfernen von verunreinigungen aus polymeren kunststoffen und vorrichtung zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
WO1992015621A1 (en) 1992-09-17
FI924965A (fi) 1992-11-03
JP3174915B2 (ja) 2001-06-11
JPH05506692A (ja) 1993-09-30
DE69224242D1 (de) 1998-03-05
US5756659A (en) 1998-05-26
ES2111635T3 (es) 1998-03-16
TW246679B (de) 1995-05-01
EP0527225B1 (de) 1998-01-28
CA2081105C (en) 2004-10-05
FI924965A0 (fi) 1992-11-03
EP0527225A1 (de) 1993-02-17
CA2081105A1 (en) 1992-09-05

Similar Documents

Publication Publication Date Title
DE69224242T2 (de) Verfahren zur Verbesserung der oxidativen thermischen Stabilität von Ethylenpolymeren
DE69228265T2 (de) Verfahren zur Herstellung von Ethylenpolymeren
DE69116182T2 (de) Verfahren zur Herstellung von alpha-Olefinpolymeren
DE69307472D1 (de) Verfahren zur Herstellung von Alpha-Olefinpolymeren
DE59010898D1 (de) Verfahren zur Herstellung von Ethylenpolymeren
DE69404257D1 (de) Verfahren zur Herstellung von alpha-Olefinpolymeren
DE69217878D1 (de) Verfahren zur Herstellung von Polymerisationskatalysator
DE69309864T3 (de) Verfahren zur Herstellung von Olefinpolymer
DE69116623D1 (de) Verfahren zur Reinigung von 1,1,1,2-Tetrafluorethan
DE69214194T3 (de) Verfahren zur Herstellung von aminierten Olefin-Polymeren
DE69323125D1 (de) Verfahren zur Umwandlung von Polymeren
DE69209102T2 (de) Verfahren zur Herstellung von Ethylenpolymere
DE69119011D1 (de) Verfahren zur Herstellung von Olefinoligomeren
DE59302486D1 (de) Verfahren zur Herstellung von Propenoligomeren
DE69316271D1 (de) Verfahren zur Herstellung von Alpha-Olefinpolymeren
DE69209256T2 (de) Verfahren zur Reinigung von 1,1,1,2-Tetrafluorethan
DE69025964T2 (de) Verfahren zur Herstellung von Ethylencopolymeren
DE3689248D1 (de) Verfahren zur Verbesserung der Reinheit von Propylenpolymeren.
DE69215001T2 (de) Verfahren zur Herstellung von Biarylverbindungen
DE69123118T2 (de) Verfahren zur Herstellung von Blockpolymeren
DE69226042D1 (de) Verfahren zur Herstellung von Polymeren
DE69207486T2 (de) Verfahren zur Herstellung von Polymeren
DE69119165D1 (de) Verfahren zur Herstellung von Olefinpolymeren
DE69303319D1 (de) Verfahren zur Herstellung von Ethylenpolymeren
DE69116132D1 (de) Verfahren zur Herstellung von Olefin Polymer

Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation