ATE169936T1 - Herstellung von polyolefinen mit lankettiger verzweigung nach einem gasphaseverfahren - Google Patents

Herstellung von polyolefinen mit lankettiger verzweigung nach einem gasphaseverfahren

Info

Publication number
ATE169936T1
ATE169936T1 AT94309546T AT94309546T ATE169936T1 AT E169936 T1 ATE169936 T1 AT E169936T1 AT 94309546 T AT94309546 T AT 94309546T AT 94309546 T AT94309546 T AT 94309546T AT E169936 T1 ATE169936 T1 AT E169936T1
Authority
AT
Austria
Prior art keywords
gas phase
phase process
lang
polyolefins
production
Prior art date
Application number
AT94309546T
Other languages
English (en)
Inventor
Frederick John Karol
Eric Paul Wasserman
Sun-Chueh Kao
Robert Converse Brady
Original Assignee
Union Carbide Chem Plastic
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=22623168&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE169936(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Union Carbide Chem Plastic filed Critical Union Carbide Chem Plastic
Application granted granted Critical
Publication of ATE169936T1 publication Critical patent/ATE169936T1/de

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
    • B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
    • 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
    • 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
    • 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
    • C08F4/65904—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with another component of C08F4/64
    • 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
    • C08F4/65912—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an organoaluminium compound
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Polymerisation Methods In General (AREA)
AT94309546T 1993-12-21 1994-12-20 Herstellung von polyolefinen mit lankettiger verzweigung nach einem gasphaseverfahren ATE169936T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17127293A 1993-12-21 1993-12-21

Publications (1)

Publication Number Publication Date
ATE169936T1 true ATE169936T1 (de) 1998-09-15

Family

ID=22623168

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94309546T ATE169936T1 (de) 1993-12-21 1994-12-20 Herstellung von polyolefinen mit lankettiger verzweigung nach einem gasphaseverfahren

Country Status (8)

Country Link
EP (1) EP0659773B2 (de)
JP (1) JP2895408B2 (de)
AT (1) ATE169936T1 (de)
AU (1) AU697056B2 (de)
BR (1) BR9405192A (de)
CA (1) CA2138572C (de)
DE (1) DE69412576T3 (de)
ES (1) ES2122179T5 (de)

Families Citing this family (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6538080B1 (en) 1990-07-03 2003-03-25 Bp Chemicals Limited Gas phase polymerization of olefins
US5710224A (en) * 1991-07-23 1998-01-20 Phillips Petroleum Company Method for producing polymer of ethylene
US5525695A (en) * 1991-10-15 1996-06-11 The Dow Chemical Company Elastic linear interpolymers
ATE304025T1 (de) * 1994-04-07 2005-09-15 Innovene Europ Ltd Copolymere
UA47394C2 (uk) * 1995-05-16 2002-07-15 Юнівейшн Текнолоджіз, Ллс Етиленовий полімер, який має підвищену придатність до обробки та вирiб, що містить етиленовий полімер
ES2182950T3 (es) * 1995-05-16 2003-03-16 Univation Tech Llc Produccion de polietileno utilizando metalocenos estereosomericos.
EP0780404A3 (de) * 1995-12-18 1997-12-29 Union Carbide Chemicals & Plastics Technology Corporation Verbessertes Winkelschichtreaktionsverfahren unter Verwendung nicht-geträgerter Katalysatoren
US6114477A (en) * 1996-02-09 2000-09-05 Exxon Chemical Patents Inc. Polymerization process
JPH09309926A (ja) 1996-05-17 1997-12-02 Dow Chem Co:The エチレン共重合体の製造方法
CN1093141C (zh) * 1996-05-17 2002-10-23 Bp化学有限公司 最大分子量出现在共聚单体含量最高的组合物部分中的聚烯烃共聚物组合物
US5693727A (en) * 1996-06-06 1997-12-02 Union Carbide Chemicals & Plastics Technology Corporation Method for feeding a liquid catalyst to a fluidized bed polymerization reactor
US6211310B1 (en) 1997-06-05 2001-04-03 Union Carbide Chemicals & Plastics Technology Corporation Manufacture of stereoregular polymers
US6759499B1 (en) 1996-07-16 2004-07-06 Exxonmobil Chemical Patents Inc. Olefin polymerization process with alkyl-substituted metallocenes
US6180736B1 (en) 1996-12-20 2001-01-30 Exxon Chemical Patents Inc High activity metallocene polymerization process
US6114457A (en) * 1997-02-07 2000-09-05 Exxon Chemical Patents Inc. High melt strength polyethylene compositions
US6355757B2 (en) 1997-02-14 2002-03-12 Exxonmobil Chemical Patents, Inc. Processing olefin copolymers
US6420507B1 (en) 1997-05-01 2002-07-16 The Dow Chemical Company Olefin polymers prepared with substituted indenyl containing metal complexes
NL1006346C2 (nl) * 1997-06-18 1998-12-21 Dsm Nv Werkwijze voor de bereiding van polyolefines bij hoge temperatuur met behulp van Zr-metallocenen.
US6921794B2 (en) 1997-08-12 2005-07-26 Exxonmobil Chemical Patents Inc. Blends made from propylene ethylene polymers
US7232871B2 (en) 1997-08-12 2007-06-19 Exxonmobil Chemical Patents Inc. Propylene ethylene polymers and production process
US6635715B1 (en) 1997-08-12 2003-10-21 Sudhin Datta Thermoplastic polymer blends of isotactic polypropylene and alpha-olefin/propylene copolymers
US6677265B1 (en) 1997-12-08 2004-01-13 Albemarle Corporation Process of producing self-supported catalysts
GB9800245D0 (en) 1998-01-07 1998-03-04 Bp Chem Int Ltd Novel polymers
AU4962399A (en) 1998-07-01 2000-01-24 Exxon Chemical Patents Inc. Elastic blends comprising crystalline polymer and crystallizable polymers of propylene
AU1241600A (en) 1998-11-02 2000-05-22 Dupont Dow Elastomers L.L.C. Shear thinning ethylene/alpha-olefin interpolymers and their preparation
WO2000050466A1 (en) * 1999-02-22 2000-08-31 Borealis Technology Oy Olefin polymerisation process
AR023992A1 (es) * 1999-10-22 2002-09-04 Univation Tech Llc Metodos para introducir catalizadores multiples en un reactor en fase de gas o de suspension y un metodo para controlar un producto de polimerizacion producido usando dos o mas catalizadores
EP1390417B1 (de) 2001-04-12 2010-10-20 ExxonMobil Chemical Patents Inc. Verfahren zur Polymerisation von Propylen und Ethylen in Lösung
US6825293B1 (en) 2001-08-20 2004-11-30 Nova Chemicals (International) S.A. Polymer control through co-catalyst
US6927256B2 (en) 2001-11-06 2005-08-09 Dow Global Technologies Inc. Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent
WO2003040201A1 (en) 2001-11-06 2003-05-15 Dow Global Technologies Inc. Isotactic propylene copolymers, their preparation and use
US7579407B2 (en) 2002-11-05 2009-08-25 Dow Global Technologies Inc. Thermoplastic elastomer compositions
US7459500B2 (en) 2002-11-05 2008-12-02 Dow Global Technologies Inc. Thermoplastic elastomer compositions
ES2293344T3 (es) 2003-08-19 2008-03-16 Dow Global Technologies Inc. Interpolimeros adecuados para usar en colas termoplasticas y procesos para prepararlos.
US7309741B2 (en) 2004-06-01 2007-12-18 Nova Chemicals (International) S.A. Polyolefin blends and pipe
US7211535B2 (en) 2004-10-29 2007-05-01 Nova Chemicals Corporation Enhanced polyolefin catalyst
US7321015B2 (en) * 2004-12-07 2008-01-22 Nova Chemicals (International) S.A. Adjusting polymer characteristics through process control
US7323523B2 (en) 2004-12-07 2008-01-29 Nova Chemicals (International) S.A. Adjusting polymer characteristics through process control
WO2007077732A1 (ja) * 2005-12-19 2007-07-12 Tosoh Corporation エチレン系重合体、エチレン系重合体製造用触媒およびエチレン系重合体の製造方法
JP2007177168A (ja) * 2005-12-28 2007-07-12 Nippon Polyethylene Kk ポリエチレン系フィルム及びその積層フィルム並びにそれらから形成される包装用袋体
EP2050771B1 (de) * 2006-07-31 2020-07-15 Mitsui Chemicals, Inc. Folie oder laminat, umfassend ethylenharz oder ethylenharzzusammensetzung
JP5014701B2 (ja) * 2006-07-31 2012-08-29 三井化学株式会社 肉厚フィルムおよびその製造方法ならびにその用途
JP2008031385A (ja) * 2006-07-31 2008-02-14 Mitsui Chemicals Inc 熱可塑性樹脂用改質材および樹脂組成物
JP5174333B2 (ja) * 2006-07-31 2013-04-03 三井化学株式会社 積層体用樹脂組成物および積層体
WO2009066689A1 (ja) 2007-11-19 2009-05-28 Mitsui Chemicals, Inc. 架橋メタロセン化合物およびそれを用いたオレフィン重合用触媒、ならびに該触媒を用いて得られるエチレン系重合体
CA2793693A1 (en) * 2010-04-05 2011-10-13 Dow Global Technologies Llc Process for polymerizing olefin-based polymers containing high molecular weight fractions in condensed and super-condensed mode
WO2012133717A1 (ja) 2011-03-30 2012-10-04 日本ポリエチレン株式会社 エチレン系重合体、ポリエチレン系樹脂組成物とその用途、オレフィン重合用触媒成分、該成分を含むオレフィン重合用触媒および該触媒を用いたエチレン系重合体の製造方法
US9221935B2 (en) 2011-06-09 2015-12-29 Nova Chemicals (International) S.A. Modified phosphinimine catalysts for olefin polymerization
US9321859B2 (en) 2011-06-09 2016-04-26 Nova Chemicals (International) S.A. Modified phosphinimine catalysts for olefin polymerization
US9127094B2 (en) 2011-06-09 2015-09-08 Nova Chemicals (International) S.A. Modified phosphinimine catalysts for olefin polymerization
CA2742454C (en) 2011-06-09 2018-06-12 Nova Chemicals Corporation Methods for controlling ethylene copolymer properties
US9315591B2 (en) 2011-06-09 2016-04-19 Nova Chemicals (International) S.A. Modified phosphinimine catalysts for olefin polymerization
US9243092B2 (en) 2011-06-09 2016-01-26 Nova Chemicals (International) S.A. Modified phosphinimine catalysts for olefin polymerization
US9127106B2 (en) 2011-06-09 2015-09-08 Nova Chemicals (International) S.A. Modified phosphinimine catalysts for olefin polymerization
CA2742461C (en) 2011-06-09 2018-06-12 Nova Chemicals Corporation Modified phosphinimine catalysts for olefin polymerization
WO2013052273A2 (en) * 2011-10-04 2013-04-11 Exxonmobil Chemical Patents Inc. Use of temperature and ethylene partial pressure to introduce long chain branching in high density polyethylene
US8796409B2 (en) 2011-10-04 2014-08-05 Exxonmobil Chemical Patents Inc. Use of temperature and ethylene partial pressure to introduce long chain branching in high density polyethylene
US9309337B2 (en) 2012-04-02 2016-04-12 Exxonmobil Research And Engineering Company Branched saturated hydrocarbon polymers as extensional rheology modifiers without impacting shear properties
US9115233B2 (en) 2012-06-21 2015-08-25 Nova Chemicals (International) S.A. Ethylene copolymer compositions, film and polymerization processes
CA2797620C (en) 2012-12-03 2019-08-27 Nova Chemicals Corporation Controlling resin properties in a gas phase polymerization process
CA2800056A1 (en) 2012-12-24 2014-06-24 Nova Chemicals Corporation Polyethylene blend compositions
CA2890606C (en) 2015-05-07 2022-07-19 Nova Chemicals Corporation Process for polymerization using dense and spherical ziegler-natta type catalyst
CA2892882C (en) 2015-05-27 2022-03-22 Nova Chemicals Corporation Ethylene/1-butene copolymers with enhanced resin processability
CA2900772C (en) 2015-08-20 2022-07-12 Nova Chemicals Corporation Method for altering melt flow ratio of ethylene polymers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY141000A (en) * 1990-04-18 2010-02-12 Mitsui Chemicals Inc Process for the preparation of an ethylene copolymer and an olefin polymer, and catalysts for olefin polymerization
US5272236A (en) * 1991-10-15 1993-12-21 The Dow Chemical Company Elastic substantially linear olefin polymers
US5278272A (en) * 1991-10-15 1994-01-11 The Dow Chemical Company Elastic substantialy linear olefin polymers
US5317036A (en) † 1992-10-16 1994-05-31 Union Carbide Chemicals & Plastics Technology Corporation Gas phase polymerization reactions utilizing soluble unsupported catalysts

Also Published As

Publication number Publication date
DE69412576D1 (de) 1998-09-24
EP0659773A1 (de) 1995-06-28
JPH07252311A (ja) 1995-10-03
DE69412576T2 (de) 1998-12-24
ES2122179T3 (es) 1998-12-16
JP2895408B2 (ja) 1999-05-24
BR9405192A (pt) 1995-08-01
CA2138572A1 (en) 1995-06-22
EP0659773B1 (de) 1998-08-19
AU8152494A (en) 1995-06-29
DE69412576T3 (de) 2002-05-29
ES2122179T5 (es) 2002-12-01
EP0659773B2 (de) 2001-12-05
AU697056B2 (en) 1998-09-24
CA2138572C (en) 1999-08-24

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