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BR9915237A - Complexos aniÈnicos do grupo 13 que contên nitrogênio para polimerização de olefinas - Google Patents

Complexos aniÈnicos do grupo 13 que contên nitrogênio para polimerização de olefinas

Info

Publication number
BR9915237A
BR9915237A BR9915237-1A BR9915237A BR9915237A BR 9915237 A BR9915237 A BR 9915237A BR 9915237 A BR9915237 A BR 9915237A BR 9915237 A BR9915237 A BR 9915237A
Authority
BR
Brazil
Prior art keywords
olefin polymerization
group
containing nitrogen
complexes containing
activated
Prior art date
Application number
BR9915237-1A
Other languages
English (en)
Inventor
Matthew W Holtcamp
Original Assignee
Univation Tech Llc
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
Application filed by Univation Tech Llc filed Critical Univation Tech Llc
Publication of BR9915237A publication Critical patent/BR9915237A/pt

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
    • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F10/02—Ethene
    • 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
    • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
    • 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
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/65916—Component covered by group C08F4/64 containing a transition metal-carbon bond supported on a carrier, e.g. silica, MgCl2, polymer
    • 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
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65925—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually non-bridged
    • 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
    • C08F4/00—Polymerisation catalysts
    • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/62—Refractory metals or compounds thereof
    • C08F4/64—Titanium, zirconium, hafnium or compounds thereof
    • C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
    • C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
    • C08F4/65927—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S526/943—Polymerization with metallocene catalysts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Polymerization Catalysts (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

Patente de Invenção: <B>"COMPLEXOS ANIÈNICOS DO GRUPO 13 QUE CONTéM NITRÈGENIO PARA POLIMERIZAçãO DE OLEFINAS"<D>. Esta descrição refere-se a um processo para a preparação de poliolefinas a partir de um ou mais monómeros olefínicos, o qual compreende combinar as olefinas sob condições de polimerização de olefinas com um composto organometálico de catalisador que é ativado para polimerização de olefinas através de reação com um complexo de co-catalisador de elemento do Grupo 13 que compreende pelo menos um ligando de grupo aromático halogenado que contém nitrogênio. Polímeros e copolímeros de altos pesos moleculares numéricos médios sob altas taxas de produtividade foram observados a partir do uso de complexos de catalisadores de metalocenos quando ativados com [(C~ 6~H~ 5~)~ 3~C][(C~ 6~F~ 5~)~ 3~B(C~ 5~F~4~N)].
BR9915237-1A 1998-11-13 1999-10-28 Complexos aniÈnicos do grupo 13 que contên nitrogênio para polimerização de olefinas BR9915237A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/191,922 US6147173A (en) 1998-11-13 1998-11-13 Nitrogen-containing group 13 anionic complexes for olefin polymerization
PCT/US1999/025275 WO2000029454A1 (en) 1998-11-13 1999-10-28 Nitrogen-containing group 13 anionic complexes for olefin polymerization

Publications (1)

Publication Number Publication Date
BR9915237A true BR9915237A (pt) 2001-07-24

Family

ID=22707468

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915237-1A BR9915237A (pt) 1998-11-13 1999-10-28 Complexos aniÈnicos do grupo 13 que contên nitrogênio para polimerização de olefinas

Country Status (11)

Country Link
US (2) US6147173A (pt)
EP (1) EP1135419B1 (pt)
JP (1) JP2002530442A (pt)
AT (1) ATE247676T1 (pt)
AU (1) AU756439B2 (pt)
BR (1) BR9915237A (pt)
CA (1) CA2330882A1 (pt)
DE (1) DE69910611T2 (pt)
ES (1) ES2205920T3 (pt)
PT (1) PT1135419E (pt)
WO (1) WO2000029454A1 (pt)

Families Citing this family (200)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6147173A (en) * 1998-11-13 2000-11-14 Univation Technologies, Llc Nitrogen-containing group 13 anionic complexes for olefin polymerization
US6660679B2 (en) 2001-06-18 2003-12-09 Univation Technologies, Llc Catalyst system and its use in a polymerization process
US6703338B2 (en) 2002-06-28 2004-03-09 Univation Technologies, Llc Polymerization catalyst activators, method of preparing, and their use in polymerization processes
US6841504B2 (en) * 2002-01-28 2005-01-11 Univation Technologies, Llc Polymerization catalyst activator and its use in a polymerization process
US6989341B2 (en) * 2002-01-28 2006-01-24 Univation Technologies, Llc Halogen substituted catalyst system for olefin polymerization
CN100532400C (zh) * 2002-07-09 2009-08-26 巴塞尔聚烯烃股份有限公司 用于烯烃聚合的催化剂体系
AU2003285869A1 (en) * 2002-11-26 2004-06-18 Dow Global Technologies, Inc. Triphenylcarbenium salts of group 13 fluoroaryl complexes
US7094848B2 (en) * 2003-05-13 2006-08-22 Exxonmobil Chemical Patents Inc. Olefin polymerization catalyst system
US7220695B2 (en) * 2004-01-07 2007-05-22 Exxonmobil Chemical Patents Inc. Supported activator
US7741417B2 (en) * 2004-01-07 2010-06-22 Exxonmobil Chemical Patents Inc. Preparation of polymerization catalyst activators utilizing indole-modified silica supports
US20050182210A1 (en) 2004-02-17 2005-08-18 Natarajan Muruganandam De-foaming spray dried catalyst slurries
TW200631965A (en) * 2004-12-07 2006-09-16 Fina Technology Random copolymers and formulations useful for thermoforming and blow molding applications
US20060247394A1 (en) * 2005-04-29 2006-11-02 Fina Technology, Inc. Process for increasing ethylene incorporation into random copolymers
US7645834B2 (en) * 2005-04-29 2010-01-12 Fina Technologies, Inc. Catalyst system for production of polyolefins
US7220806B2 (en) * 2005-04-29 2007-05-22 Fina Technology, Inc. Process for increasing ethylene incorporation into random copolymers
US7081285B1 (en) 2005-04-29 2006-07-25 Fina Technology, Inc. Polyethylene useful for blown films and blow molding
US7282546B2 (en) * 2005-06-22 2007-10-16 Fina Technology, Inc. Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations
US20070299222A1 (en) 2006-04-04 2007-12-27 Fina Technology, Inc. Transition metal catalysts and formation thereof
US7683002B2 (en) 2006-04-04 2010-03-23 Fina Technology, Inc. Transition metal catalyst and formation thereof
US20070235896A1 (en) * 2006-04-06 2007-10-11 Fina Technology, Inc. High shrink high modulus biaxially oriented films
US7893181B2 (en) * 2006-07-11 2011-02-22 Fina Technology, Inc. Bimodal film resin and products made therefrom
US7449529B2 (en) * 2006-07-11 2008-11-11 Fina Technology, Inc. Bimodal blow molding resin and products made therefrom
US20080051538A1 (en) * 2006-07-11 2008-02-28 Fina Technology, Inc. Bimodal pipe resin and products made therefrom
US7514510B2 (en) 2006-07-25 2009-04-07 Fina Technology, Inc. Fluorenyl catalyst compositions and olefin polymerization process
US7470759B2 (en) * 2006-07-31 2008-12-30 Fina Technology, Inc. Isotactic-atactic polypropylene and methods of making same
US20080061468A1 (en) * 2006-09-07 2008-03-13 Frank Li Fiber processing of high ethylene level propylene-ethylene random copolymers by use of nucleators
US7538167B2 (en) * 2006-10-23 2009-05-26 Fina Technology, Inc. Syndiotactic polypropylene and methods of preparing same
US20080114130A1 (en) * 2006-11-10 2008-05-15 John Ashbaugh Resin composition for production of high tenacity slit film, monofilaments and fibers
KR20090093981A (ko) 2006-12-15 2009-09-02 피나 테크놀러지, 인코포레이티드 폴리프로필렌 블로운 필름
WO2008082954A1 (en) * 2006-12-29 2008-07-10 Fina Technology, Inc. Succinate-containing polymerization catalyst system using n-butylmethyldimethoxysilane for preparation of polypropylene film grade resins
EP2112175A1 (en) 2008-04-16 2009-10-28 ExxonMobil Chemical Patents Inc. Activator for metallocenes comprising one or more halogen substituted heterocyclic heteroatom containing ligand coordinated to an alumoxane
US8022005B2 (en) * 2007-11-08 2011-09-20 Exxonmobil Chemical Patents Inc. Halogen substituted heterocyclic heteroatom containing ligands-alumoxane activation of metallocenes
TW200936619A (en) 2007-11-15 2009-09-01 Univation Tech Llc Polymerization catalysts, methods of making, methods of using, and polyolefin products made therefrom
US8859084B2 (en) * 2008-01-29 2014-10-14 Fina Technology, Inc. Modifiers for oriented polypropylene
US8003741B2 (en) 2008-02-07 2011-08-23 Fina Technology, Inc. Ziegler-Natta catalyst
US20090202770A1 (en) * 2008-02-08 2009-08-13 Fengkui Li Polypropylene/polyisobutylene blends and films prepared from same
US7740070B2 (en) * 2008-06-16 2010-06-22 Halliburton Energy Services, Inc. Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using same
US8283428B2 (en) 2008-06-20 2012-10-09 Exxonmobil Chemical Patents Inc. Polymacromonomer and process for production thereof
US8372930B2 (en) 2008-06-20 2013-02-12 Exxonmobil Chemical Patents Inc. High vinyl terminated propylene based oligomers
US8399725B2 (en) 2008-06-20 2013-03-19 Exxonmobil Chemical Patents Inc. Functionalized high vinyl terminated propylene based oligomers
US8283419B2 (en) 2008-06-20 2012-10-09 Exxonmobil Chemical Patents Inc. Olefin functionalization by metathesis reaction
US8802797B2 (en) 2008-06-20 2014-08-12 Exxonmobil Chemical Patents Inc. Vinyl-terminated macromonomer oligomerization
US8759446B2 (en) * 2008-06-30 2014-06-24 Fina Technology, Inc. Compatibilized polypropylene and polylactic acid blends and methods of making and using same
US8545971B2 (en) * 2008-06-30 2013-10-01 Fina Technology, Inc. Polymeric compositions comprising polylactic acid and methods of making and using same
US8268913B2 (en) * 2008-06-30 2012-09-18 Fina Technology, Inc. Polymeric blends and methods of using same
US9334342B2 (en) 2008-10-01 2016-05-10 Fina Technology, Inc. Polypropylene for reduced plate out in polymer article production processes
US20100087602A1 (en) * 2008-10-08 2010-04-08 Fina Technology, Inc. Long chain branched polypropylene for cast film applications
WO2010080871A1 (en) 2009-01-08 2010-07-15 Univation Technologies, Llc Additive for gas phase 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
US9090000B2 (en) 2009-03-26 2015-07-28 Fina Technology, Inc. Injection stretch blow molded articles and random copolymers for use therein
US20100247887A1 (en) 2009-03-26 2010-09-30 Fina Technology, Inc. Polyolefin films for in-mold labels
US8653198B2 (en) 2009-03-26 2014-02-18 Fina Technology, Inc. Method for the preparation of a heterophasic copolymer and uses thereof
WO2011011427A1 (en) 2009-07-23 2011-01-27 Univation Technologies, Llc Polymerization reaction system
US9174384B2 (en) * 2009-09-01 2015-11-03 Fina Technology, Inc. Multilayer polypropylene films and methods of making and using same
US8592535B2 (en) 2010-01-11 2013-11-26 Fina Technology, Inc. Ziegler-natta catalyst systems and polymers formed therefrom
US10351640B2 (en) 2010-04-22 2019-07-16 Fina Technology, Inc. Formation of Ziegler-Natta catalyst using non-blended components
US8278403B2 (en) 2010-07-08 2012-10-02 Fina Technology, Inc. Multi-component catalyst systems and polymerization processes for forming broad composition distribution polymers
US20120046429A1 (en) 2010-08-23 2012-02-23 Fina Technology, Inc. Sequential Formation of Ziegler-Natta Catalyst Using Non-blended Components
US10711077B2 (en) 2011-02-07 2020-07-14 Fina Technology, Inc. Ziegler-natta catalyst composition with controlled morphology
US8586192B2 (en) 2011-02-15 2013-11-19 Fina Technology, Inc. Compatibilized polymeric compositions comprising polyolefin-polylactic acid copolymers and methods of making the same
US9382347B2 (en) 2011-02-16 2016-07-05 Fina Technology Inc Ziegler-Natta catalysts doped with non-group IV metal chlorides
US8628718B2 (en) 2011-02-18 2014-01-14 Fina Technology, Inc. Modified polylactic acid, polymeric blends and methods of making the same
US8658556B2 (en) 2011-06-08 2014-02-25 Exxonmobil Chemical Patents Inc. Catalyst systems comprising multiple non-coordinating anion activators and methods for polymerization therewith
WO2012170202A2 (en) * 2011-06-08 2012-12-13 Exxonmobil Chemical Patents Inc. Catalyst systems comprising multiple non-coordinating anion activators and methods for polymerization therewith
KR102022132B1 (ko) 2011-11-08 2019-09-17 유니베이션 테크놀로지즈, 엘엘씨 촉매 시스템의 제조 방법
US8580893B2 (en) 2011-12-22 2013-11-12 Fina Technology, Inc. Methods for improving multimodal polyethylene and films produced therefrom
US8664461B2 (en) 2012-03-19 2014-03-04 Exxonmobil Chemical Patents Inc. Catalysts for producing polyalpha-olefins and processes related thereto
US9321854B2 (en) 2013-10-29 2016-04-26 Exxonmobil Chemical Patents Inc. Aluminum alkyl with C5 cyclic and pendent olefin polymerization catalyst
US9206293B2 (en) 2014-01-31 2015-12-08 Fina Technology, Inc. Polyethyene and articles produced therefrom
US10584823B2 (en) 2014-06-11 2020-03-10 Fina Technology, Inc. Chlorine-resistant polyethylene compound and articles made therefrom
US9650448B2 (en) 2014-06-13 2017-05-16 Fina Technology, Inc. Formation of a Ziegler-Natta catalyst
US9624321B2 (en) 2014-06-13 2017-04-18 Fina Technology, Inc. Formation of a Ziegler-Natta catalyst
WO2016094866A1 (en) 2014-12-12 2016-06-16 Exxonmobil Chemical Patents Inc. Olefin polymerization catalyst system comprising mesoporous organosilica support
EP3229944A1 (en) 2014-12-12 2017-10-18 ExxonMobil Research and Engineering Company Membrane fabrication methods using organosilica materials and uses thereof
WO2016094843A2 (en) 2014-12-12 2016-06-16 Exxonmobil Chemical Patents Inc. Olefin polymerization catalyst system comprising mesoporous organosilica support
WO2016094861A1 (en) 2014-12-12 2016-06-16 Exxonmobil Chemical Patents Inc. Olefin polymerization catalyst system comprising mesoporous organosilica support
WO2016094870A1 (en) 2014-12-12 2016-06-16 Exxonmobil Chemical Patents Inc. Olefin polymerization catalyst system comprising mesoporous organosilica support
JP6509349B2 (ja) 2015-01-14 2019-05-08 エクソンモービル ケミカル パテンツ インコーポレイテッド ポリマー組成物及びその製造方法
EP3274353B1 (en) 2015-03-24 2021-03-31 ExxonMobil Chemical Patents Inc. Bisphenolate transition metal complexes, production and use thereof
EP3286230B1 (en) 2015-04-20 2023-03-08 ExxonMobil Chemical Patents Inc. Supported catalyst systems and processes for use thereof
US10351647B2 (en) 2015-05-29 2019-07-16 Exxonmobil Chemical Patents Inc. Polymerization process using bridged metallocene compounds supported on organoaluminum treated layered silicate supports
CN107922537B (zh) 2015-06-05 2021-07-27 埃克森美孚化学专利公司 气相或淤浆相中多相聚合物的制备
WO2016196334A1 (en) 2015-06-05 2016-12-08 Exxonmobil Chemical Patents Inc. Single reactor production of polymers in gas or slurry phase
US11041029B2 (en) 2015-08-31 2021-06-22 Exxonmobil Chemical Patents Inc. Aluminum alkyls with pendant olefins for polyolefin reactions
EP3344385A4 (en) 2015-08-31 2019-08-14 ExxonMobil Chemical Patents Inc. ALUMINUM ALKYLE WITH HANGING OLEFINS ON SOUND
US10618988B2 (en) 2015-08-31 2020-04-14 Exxonmobil Chemical Patents Inc. Branched propylene polymers produced via use of vinyl transfer agents and processes for production thereof
EP3356038A4 (en) 2015-10-02 2018-11-14 ExxonMobil Chemical Patents Inc. Asymmetric fluorenyl-substituted salan catalysts
US10087268B2 (en) 2015-10-22 2018-10-02 Exxonmobil Chemical Patents Inc. Catalysts for the formation of multimodal polymers
EP3365379B1 (en) 2015-10-23 2024-12-18 ExxonMobil Chemical Patents Inc. Production of polyolefins with internal unsaturation structures using a metallocene catalyst system
US10059788B2 (en) 2016-04-29 2018-08-28 Exxonmobil Chemical Patents Inc. Organoaluminum activators on clays
US9803037B1 (en) 2016-05-03 2017-10-31 Exxonmobil Chemical Patents Inc. Tetrahydro-as-indacenyl catalyst composition, catalyst system, and processes for use thereof
CN109312015B (zh) 2016-05-03 2021-10-26 埃克森美孚化学专利公司 四氢引达省基催化剂组合物、催化剂体系及其使用方法
US11059918B2 (en) 2016-05-27 2021-07-13 Exxonmobil Chemical Patents Inc. Metallocene catalyst compositions and polymerization process therewith
WO2018005201A1 (en) 2016-06-30 2018-01-04 Exxonmobil Chemical Patents Inc. Quinolinyldiamido transition metal complexes, production and use thereof
US10562987B2 (en) 2016-06-30 2020-02-18 Exxonmobil Chemical Patents Inc. Polymers produced via use of quinolinyldiamido transition metal complexes and vinyl transfer agents
WO2018022279A1 (en) 2016-07-29 2018-02-01 Exxonmobil Chemical Patents Inc. Phenolate transition metal complexes, production and use thereof
WO2018022263A1 (en) 2016-07-29 2018-02-01 Exxonmobil Chemical Patents Inc. Polymerization processes using high molecular weight polyhydric quenching agents
CN109996820A (zh) 2016-10-05 2019-07-09 埃克森美孚化学专利公司 茂金属催化剂，催化剂体系和使用其的方法
WO2018075243A1 (en) 2016-10-19 2018-04-26 Exxonmobil Chemical Patents Inc. Supported catalyst systems and methods of using same
CN110062777A (zh) 2016-10-19 2019-07-26 埃克森美孚化学专利公司 混合催化剂体系及其使用方法
EP3532291A4 (en) 2016-10-28 2020-06-03 Fina Technology, Inc. USE OF AGENTS FOR REDUCING CRYSTALLINITY IN POLYPROPYLENE FOR BOPP APPLICATIONS
WO2018118259A1 (en) 2016-12-22 2018-06-28 Exxonmobil Chemical Patents Inc. Spray-dried olefin polymerization catalyst compositions and polymerization processes for using the same
KR102271789B1 (ko) 2017-02-20 2021-06-30 엑손모빌 케미칼 패턴츠 인코포레이티드 지지된 촉매 시스템 및 그의 사용 방법
WO2018151904A1 (en) 2017-02-20 2018-08-23 Exxonmobil Chemical Patents Inc. Group 4 catalyst compounds and process for use thereof
EP3583141B1 (en) 2017-02-20 2021-02-17 ExxonMobil Chemical Patents Inc. Group 4 catalyst compounds and process for use thereof
WO2018151790A1 (en) 2017-02-20 2018-08-23 Exxonmobil Chemical Patents Inc. Hafnocene catalyst compounds and process for use thereof
US10626200B2 (en) 2017-02-28 2020-04-21 Exxonmobil Chemical Patents Inc. Branched EPDM polymers produced via use of vinyl transfer agents and processes for production thereof
US10676551B2 (en) 2017-03-01 2020-06-09 Exxonmobil Chemical Patents Inc. Branched ethylene copolymers produced via use of vinyl transfer agents and processes for production thereof
US20200071438A1 (en) 2017-03-21 2020-03-05 Exxonmobil Chemical Patents Inc. Processes for Preparing a Catalyst System and Polymerizing Olefins
WO2018191000A1 (en) 2017-04-10 2018-10-18 Exxonmobil Chemicl Patents Inc. Methods for making polyolefin polymer compositions
JP6868714B2 (ja) 2017-05-10 2021-05-12 ユニベーション・テクノロジーズ・エルエルシー 触媒系およびその使用のためのプロセス
WO2018212852A1 (en) 2017-05-19 2018-11-22 Exxonmobil Chemical Patents Inc. Catalyst systems and polymerization processes for using the same
CN111491959B (zh) 2017-08-04 2023-08-25 埃克森美孚化学专利公司 由聚乙烯组合物制成的膜及其制造方法
EP3697822B1 (en) 2017-08-04 2025-07-30 ExxonMobil Chemical Patents Inc. Mixed catalysts with unbridged hafnocenes with -ch2-sime3 moieties
CN111094366B (zh) 2017-08-04 2022-06-24 埃克森美孚化学专利公司 聚乙烯组合物和由其制备的膜
CN111587256B (zh) 2017-10-23 2023-05-19 埃克森美孚化学专利公司 催化剂体系和使用催化剂体系的聚合方法
WO2019094131A1 (en) 2017-11-13 2019-05-16 Exxonmobil Chemical Patents Inc. Polyethylene compositions and articles made therefrom
WO2019094132A1 (en) 2017-11-13 2019-05-16 Exxonmobil Chemical Patents Inc. Polyethylene compositions and articles made therefrom
EP3710491B1 (en) 2017-11-14 2025-01-01 ExxonMobil Chemical Patents Inc. (di)silicon bridged metallocenes that produce polyethylene broad molecular weight distribution and molecular weight
US11015002B2 (en) 2017-11-15 2021-05-25 Exxonmobil Chemical Patents Inc. Polymerization processes
EP3710501A2 (en) 2017-11-15 2020-09-23 ExxonMobil Chemical Patents Inc. Polymerization processes
US11111325B2 (en) 2017-11-15 2021-09-07 Exxonmobil Chemical Patents Inc. Polymerization processes
US10934376B2 (en) 2017-11-28 2021-03-02 Exxonmobil Chemical Patents Inc. Polyethylene compositions and films made therefrom
WO2019108315A1 (en) 2017-11-28 2019-06-06 Exxonmobil Chemical Patents Inc. Catalyst systems and polymerization processes for using the same
US11028196B2 (en) 2017-12-22 2021-06-08 Exxonmobil Chemical Patents Inc. Polyolefin compositions
US11952480B2 (en) 2018-02-05 2024-04-09 Exxonmobil Chemical Patents Inc. Enhanced processability of LLDPE by addition of ultra-high molecular weight density polyethylene
WO2019156968A1 (en) 2018-02-07 2019-08-15 Exxonmobil Chemical Patents Inc. Supported catalysts systems and polymerization processes for using the same
CN112513110B (zh) 2018-03-08 2023-10-27 埃克森美孚化学专利公司 作为粘度改性剂的乙烯-丙烯线性共聚物
CN112236505A (zh) 2018-03-08 2021-01-15 埃克森美孚化学专利公司 具有增强的燃料经济性的作为粘度改性剂的乙烯-丙烯支化共聚物
CN111868117B (zh) 2018-03-19 2023-04-21 埃克森美孚化学专利公司 使用四氢引达省基催化剂体系制备高丙烯含量pedm的方法
CN111902435B (zh) 2018-03-19 2024-07-19 埃克森美孚化学专利公司 弹性体丙烯-α-烯烃-二烯三元共聚物组合物
CN112218900B (zh) 2018-06-04 2023-07-04 埃克森美孚化学专利公司 包括两种二茂铪催化剂化合物的催化剂体系
WO2019236351A1 (en) 2018-06-04 2019-12-12 Exxonmobil Chemical Patents Inc. Metallocenes with si-si bridges
WO2019236418A1 (en) 2018-06-05 2019-12-12 Exxonmobil Chemical Patents Inc. Alcohol-polyalphaolefins and methods thereof
WO2019246069A1 (en) 2018-06-19 2019-12-26 Exxonmobil Chemical Patents Inc. Polyethylene compositions and films prepared therefrom
EP3810667A1 (en) 2018-06-22 2021-04-28 ExxonMobil Chemical Patents Inc. Methods to produce heterogeneous polyethylene granules
WO2020023193A1 (en) 2018-07-23 2020-01-30 Exxonmobil Chemical Patents Inc. Preparation of bimodal rubber, thermoplastic vulcanizates, and articles made therefrom
US12006423B2 (en) 2018-08-29 2024-06-11 ExxonMobil Engineering & Technology Company Methods of making polymer compositions with enhanced elasticity by employing VTP and HMP catalyst systems in parallel processes
WO2020046406A1 (en) 2018-08-30 2020-03-05 Exxonmobil Chemical Patents Inc. Polymerization processes and polymers made therefrom
WO2020056119A1 (en) 2018-09-14 2020-03-19 Fina Technology, Inc. Polyethylene and controlled rheology polypropylene polymer blends and methods of use
US12202920B2 (en) 2019-01-08 2025-01-21 ExxonMobil Engineering & Technology Company Olefin polymerization processes featuring in situ blending of an oil extension
US20200263000A1 (en) 2019-02-20 2020-08-20 Fina Technology, Inc. Polymer Compositions with Low Warpage
US11180580B2 (en) 2019-03-29 2021-11-23 Exxonmobil Chemical Patents Inc. Benzazole and pseudoindole diamido transition metal complexes and use thereof in olefin polymerization
CN114423838B (zh) 2019-07-17 2023-11-24 埃克森美孚化学专利公司 包含丙烯-乙烯(-二烯)共聚物的压敏粘合剂
US12338257B2 (en) 2019-08-02 2025-06-24 Exxonmobil Chemical Patents Inc. Metallocenes and methods thereof
CN114450336B (zh) 2019-08-05 2024-01-09 埃克森美孚化学专利公司 用于改进橡胶粘着性的丙烯-α-烯烃-二烯三元共聚物添加剂
CN114929761A (zh) 2019-08-22 2022-08-19 埃克森美孚化学专利公司 用c1对称的茂金属催化剂生产的全同立构的丙烯均聚物和共聚物
CN114787202A (zh) 2019-08-27 2022-07-22 雪佛龙奥伦耐有限责任公司 乙烯共聚物及作为粘度改性剂的用途
US11649256B2 (en) 2019-10-11 2023-05-16 Exxonmobil Chemical Patents Inc. Catalysts for olefin polymerization
WO2021118715A1 (en) 2019-12-11 2021-06-17 Exxonmobil Chemical Patents Inc. Low aromatic polyolefins
WO2021126692A1 (en) 2019-12-16 2021-06-24 Exxonmobil Chemical Patents Inc. Iron bis(imino) aryl catalysts and methods thereof
EP4110835A1 (en) 2020-02-24 2023-01-04 ExxonMobil Chemical Patents Inc. Lewis base catalysts and methods thereof
WO2021173361A1 (en) 2020-02-24 2021-09-02 Exxonmobil Chemical Patents Inc. Ansa-bis(inden-2-yl) catalysts for producing vinylidene-terminated polyalphaolefins
US11760814B2 (en) 2020-03-03 2023-09-19 Exxonmobil Chemical Patents Inc. 1,5 diazabicyclooctane ligand systems and methods therewith
WO2021188361A1 (en) 2020-03-20 2021-09-23 Exxonmobil Chemical Patents Inc. Linear alpha-olefin copolymers and impact copolymers thereof
US12528892B2 (en) 2020-03-25 2026-01-20 Exxonmobil Chemical Patents Inc. Alkylation of transition metal coordination catalyst complexes
CN115380073A (zh) 2020-03-30 2022-11-22 埃克森美孚化学专利公司 梳型嵌段共聚物及其方法
US12534582B2 (en) 2020-05-01 2026-01-27 Exxonmobil Chemical Patents Inc. Linear low density polyethylene for film applications
US20230174757A1 (en) 2020-05-01 2023-06-08 Exxonmobil Chemical Patents Inc. Linear Low Density Polyethylene for Film Applications
US20230242745A1 (en) 2020-06-03 2023-08-03 Exxonmobil Chemical Patents Inc Process for Production of Thermoplastic Vulcanizates using Supported Catalyst Systems and Compositions Made Therefrom
WO2021257264A1 (en) 2020-06-16 2021-12-23 Exxonmobil Chemical Patents Inc. Metallocene catalysts for producing vinyl-terminated polyalphaolefins and methods associated therewith
WO2021262838A1 (en) 2020-06-26 2021-12-30 Exxonmobil Chemical Patents Inc. Copolymers composed of ethylene, a-olefin, non-conjugated diene, and substituted styrene and articles therefrom
WO2021262842A1 (en) 2020-06-26 2021-12-30 Exxonmobil Chemical Patents Inc. COPOLYMERS OF ETHYLENE, α-OLEFIN, NON-CONJUGATED DIENE, AND ARYL-SUBSTITUTED CYCLOALKENE, METHODS TO PRODUCE, BLENDS, AND ARTICLES THEREFROM
WO2022035585A1 (en) 2020-08-13 2022-02-17 Exxonmobil Chemical Patents Inc. Cyclic containing polymer compositions obtained using transition metal bis(phenolate) catalyst complexes and process for production thereof
US20250353939A1 (en) 2020-09-30 2025-11-20 Exxonmobil Chemical Patents Inc. Bis(heterocyclic-olate) Lewis Base Catalysts and Methods Thereof
WO2022076216A1 (en) 2020-10-08 2022-04-14 Exxonmobil Chemical Patents Inc. Supported catalyst systems and processes for use thereof
US11814460B2 (en) 2020-10-22 2023-11-14 Exxonmobil Chemical Patents Inc. Pyridyl hydroxyl amine catalyst compounds and systems for Olefin Polymerization
EP4232484A1 (en) 2020-10-22 2023-08-30 ExxonMobil Chemical Patents Inc. Multidentate lewis base catalysts and methods for use thereof
US11919981B2 (en) 2020-10-22 2024-03-05 Exxonmobil Chemical Patents Inc. Monocyclopentadienyl pyridyl hydroxyl amine catalyst compounds and systems for olefin polymerization
US20230406967A1 (en) 2020-10-28 2023-12-21 Exxonmobil Chemical Patents Inc. Non-Aromatic Hydrocarbon Soluble Olefin Polymerization Catalysts and Use Thereof
US12195563B2 (en) 2020-12-29 2025-01-14 Exxonmobil Chemical Patents Inc. Polyolefin-based ionomers and production thereof
EP4271718A1 (en) 2020-12-29 2023-11-08 ExxonMobil Chemical Patents Inc. Polyolefin-based ionomers and production thereof
US12503529B2 (en) 2021-02-26 2025-12-23 Exxonmobil Chemical Patents Inc. Polymers of 4-substituted hexadiene and processes for production thereof
JP2024518327A (ja) 2021-04-26 2024-05-01 フイナ・テクノロジー・インコーポレーテツド 薄シングルサイト触媒ポリマーシート
WO2022240946A1 (en) 2021-05-14 2022-11-17 Exxonmobil Chemical Patents Inc. Ethylene-propylene branched copolymers used as viscosity modifiers
JP2024518830A (ja) 2021-05-14 2024-05-07 エクソンモービル ケミカル パテンツ，インコーポレイティド 粘度調整剤としてのエチレン－プロピレン分岐コポリマー
EP4347670A1 (en) 2021-05-24 2024-04-10 ExxonMobil Chemical Patents Inc. Biphasic polymerization processes
EP4396246A1 (en) 2021-09-02 2024-07-10 ExxonMobil Chemical Patents Inc. C1 symmetric metallocene catalysts tailored for production of vinyl-terminated polypropylene oligomers and macromonomers
WO2023044215A1 (en) 2021-09-14 2023-03-23 Exxonmobil Chemical Patents Inc. Catalyst feeder and processes thereof
US20250188108A1 (en) 2022-03-14 2025-06-12 Exxonmobil Chemical Patents Inc. Metal-Containing Bis(Imino) per-Substituted Aryl Compounds and Methods Thereof
CN118922428A (zh) 2022-03-14 2024-11-08 埃克森美孚化学专利公司 金属双(亚氨基)芳基化合物及其方法
US20250368760A1 (en) 2022-06-24 2025-12-04 Exxonmobil Chemical Patents Inc. Constrained Geometry Metal-Ligand Complexes and Use Thereof in Olefin Polymerization
CN115651101B (zh) * 2022-09-21 2024-08-09 天津科技大学 一种用于乙烯聚合的负载化茂金属催化剂及其制备方法
EP4594403A1 (en) 2022-09-29 2025-08-06 ExxonMobil Chemical Patents Inc. Foamable branched polypropylene compositions and foamed products produced therefrom
CN120187768A (zh) 2022-11-29 2025-06-20 弗纳技术股份有限公司 用于增材制造的聚丙烯
EP4662254A1 (en) 2023-02-08 2025-12-17 ExxonMobil Technology and Engineering Company Catalysts for copolymerizations
CN120981492A (zh) 2023-02-14 2025-11-18 埃克森美孚技术与工程公司 具有二茂铁基取代基的茂金属催化剂化合物
WO2024242933A1 (en) 2023-05-23 2024-11-28 ExxonMobil Technology and Engineering Company Catalysts and polymerizations for improved polyolefins
WO2024242932A1 (en) 2023-05-23 2024-11-28 ExxonMobil Technology and Engineering Company Polethylenes, catalysts for their polymerization, and films thereof
CN121464161A (zh) 2023-05-23 2026-02-03 埃克森美孚技术与工程公司 具有改进的加工性的聚乙烯及其膜
WO2024242929A1 (en) 2023-05-23 2024-11-28 ExxonMobil Technology and Engineering Company Low density polethylenes, films thereof, and methods and catalysts for production thereof
CN121420003A (zh) 2023-05-23 2026-01-27 埃克森美孚技术与工程公司 催化剂、聚乙烯、其聚合及其膜
WO2024242936A1 (en) 2023-05-23 2024-11-28 ExxonMobil Technology and Engineering Company Catalysts and polymerizations for improved polyolefins
WO2025080492A1 (en) 2023-10-13 2025-04-17 ExxonMobil Technology and Engineering Company Metallocene catalyst compounds for producing polyolefins
WO2025117332A1 (en) 2023-12-01 2025-06-05 ExxonMobil Technology and Engineering Company Methods for producing impact copolymers using dianionic complexes containing eight-membered chelate rings
WO2025117379A1 (en) 2023-12-01 2025-06-05 ExxonMobil Technology and Engineering Company Formation of branched polypropylenes using dianionic complexes having eight-membered chelate rings
WO2025117277A1 (en) 2023-12-01 2025-06-05 ExxonMobil Technology and Engineering Company Metallocene catalyst compounds for producing polyolefins
WO2025117354A1 (en) 2023-12-01 2025-06-05 ExxonMobil Technology and Engineering Company Methods for producing impact copolymers using c1 symmetric metallocene catalysts
WO2026024944A1 (en) 2024-07-25 2026-01-29 ExxonMobil Technology and Engineering Company Metallocene catalyst compounds for producing polyolefins
WO2026024926A1 (en) 2024-07-25 2026-01-29 ExxonMobil Technology and Engineering Company Metallocene catalyst compounds for producing polyolefins

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3574683D1 (de) * 1984-09-28 1990-01-18 Siemens Ag Schweisseinrichtung fuer das schmelzschweissen mit magnetisch bewegtem lichtbogen.
IL85097A (en) * 1987-01-30 1992-02-16 Exxon Chemical Patents Inc Catalysts based on derivatives of a bis(cyclopentadienyl)group ivb metal compound,their preparation and their use in polymerization processes
US5198401A (en) * 1987-01-30 1993-03-30 Exxon Chemical Patents Inc. Ionic metallocene catalyst compositions
EP0427697B1 (en) * 1989-10-10 1996-05-08 Fina Technology, Inc. Metallocene catalysts with Lewis acids and aluminum alkyls
US5721185A (en) * 1991-06-24 1998-02-24 The Dow Chemical Company Homogeneous olefin polymerization catalyst by abstraction with lewis acids
US5288677A (en) * 1991-06-28 1994-02-22 Exxon Chemical Patents Inc. Immobilized Lewis acid catalysts
CA2124187C (en) * 1991-11-25 2001-08-07 Howard William Turner Polyonic transition metal catalyst composition
JP3194438B2 (ja) * 1992-01-08 2001-07-30 出光興産株式会社 スチレン系重合体の製造方法及びその触媒
ES2105331T3 (es) * 1992-10-02 1997-10-16 Dow Chemical Co Complejos cataliticos homogeneos soportados para polimerizacion de olefinas.
IT1273701B (it) * 1994-07-29 1997-07-09 Enichem Elastomers Derivati metallorganici del grupo iiia e procedimento per la loro preparazione
US5643847A (en) * 1994-08-03 1997-07-01 Exxon Chemical Patents Inc. Supported ionic catalyst composition
IT1275812B1 (it) * 1995-10-27 1997-10-17 Enichem Spa Sistema catalitico attivato per la (co)polimerizzazione delle alfa-olefine
IT1283010B1 (it) * 1996-05-15 1998-04-03 Enichem Spa Complesso metallocenico supportato e procedimento per la sua prepa- razione
US5854166A (en) * 1996-08-19 1998-12-29 Northwestern University Synthesis and use of (perfluoroaryl) fluoro-aluminate anion
DE69916834T2 (de) * 1998-06-12 2004-09-30 Univation Technologies, LLC, Houston Verfahren zur polymerisation von olefinen unter verwendung von aktivierten lewis säure-base komplexen
JP2002520452A (ja) * 1998-07-16 2002-07-09 ユニベーション・テクノロジーズ・エルエルシー オレフィン重合用のアルミニウム系ルイス酸助触媒
US6147173A (en) * 1998-11-13 2000-11-14 Univation Technologies, Llc Nitrogen-containing group 13 anionic complexes for olefin polymerization

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