TW200706546A - Process for transitioning a reactor from a ziegler-natta catalyzed polymerization to a polymerization catalyzed by another type of catalyst system - Google Patents

Process for transitioning a reactor from a ziegler-natta catalyzed polymerization to a polymerization catalyzed by another type of catalyst system

Info

Publication number
TW200706546A
TW200706546A TW095118752A TW95118752A TW200706546A TW 200706546 A TW200706546 A TW 200706546A TW 095118752 A TW095118752 A TW 095118752A TW 95118752 A TW95118752 A TW 95118752A TW 200706546 A TW200706546 A TW 200706546A
Authority
TW
Taiwan
Prior art keywords
reactor
catalyst
catalyzed
polymerization
ziegler
Prior art date
Application number
TW095118752A
Other languages
Chinese (zh)
Inventor
Michael D Turner
Guadalupe G Leal
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
Application filed by Union Carbide Chem Plastic filed Critical Union Carbide Chem Plastic
Publication of TW200706546A publication Critical patent/TW200706546A/en

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

A process for transitioning a continuous olefin polymerization reaction, catalyzed by a Ziegler-type catalyst, to a polymerization reaction catalyzed by another type of catalyst system. In this process, the introduction of the transition metal halide component of the Ziegler-type catalyst and the electron donor of the Ziegler-type catalyst into the reactor are discontinued, and the level of each of these components is reduced, using a catalyst inventory reduction step or steps, before and/or after the discontinuation of the catalyst components. The catalyst inventory reduction is eventually followed by the introduction of at least one reversible poison, such as CO2, and/or at least one irreversible poison into the reactor, and the circulation of the poison(s) within the reactor. The reactor is purged with an inert gas. Following this process, another catalyst system (or second catalyst system) is introduced into the reactor, and polymerization initiated.
TW095118752A 2005-05-27 2006-05-26 Process for transitioning a reactor from a ziegler-natta catalyzed polymerization to a polymerization catalyzed by another type of catalyst system TW200706546A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US68555305P 2005-05-27 2005-05-27

Publications (1)

Publication Number Publication Date
TW200706546A true TW200706546A (en) 2007-02-16

Family

ID=36950415

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095118752A TW200706546A (en) 2005-05-27 2006-05-26 Process for transitioning a reactor from a ziegler-natta catalyzed polymerization to a polymerization catalyzed by another type of catalyst system

Country Status (3)

Country Link
AR (1) AR055325A1 (en)
TW (1) TW200706546A (en)
WO (1) WO2006130310A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015181151A1 (en) 2014-05-27 2015-12-03 Sabic Global Technologies B.V. Process for transitioning between incompatible catalysts
WO2016102544A1 (en) 2014-12-22 2016-06-30 Sabic Global Technologies B.V. Recovery of hydrocarbons from a hydrocarbon recycle
KR102461683B1 (en) 2016-09-16 2022-11-01 더블유.알. 그레이스 앤드 캄파니-콘. Process for efficient purging of polymer particles

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460755A (en) * 1982-09-30 1984-07-17 Union Carbide Corporation Direct conversion of a polymerization reaction catalyzed by a Ziegler-type catalyst into one catalyzed by a chromium-based catalyst
US6833417B2 (en) * 2002-12-31 2004-12-21 Univation Technologies, Llc Processes for transitioning between chrome-based and mixed polymerization catalysts
US7629422B2 (en) * 2004-12-21 2009-12-08 Univation Technologies, Llc Process for transitioning between Ziegler-Natta-based and chromium-based catalysts

Also Published As

Publication number Publication date
WO2006130310A1 (en) 2006-12-07
AR055325A1 (en) 2007-08-15

Similar Documents

Publication Publication Date Title
Liarou et al. Copper‐mediated polymerization without external deoxygenation or oxygen scavengers
DE60214038D1 (en) GAS PHASES OLEFIN POLYMERIZATION PROCEDURE USING A DUAL DONOR ZIEGLER-NATTA CATALYST
TW200704656A (en) Aminosilane compound, catalyst component and catalyst for olefin polymerization, and process for producing olefin polymer using the same
TW200609253A (en) High activity and good hydrogen response ziegler-natta polyethylene catalyst
Jiang et al. Immortal SET–LRP mediated by Cu (0) wire
Jia et al. Emergent Lévy behavior in single-cell stochastic gene expression
AU3135102A (en) Polymerization process
TW200722440A (en) Polymerization process
MXPA03005072A (en) Method for hydrotreatment of a heavy hydrocarbon fraction with switchable reactors and reactors capable of being shorted out.
TW200505953A (en) Enhanced solubility of magnesium halides and catalysts and polymerization processes using same
TW200706546A (en) Process for transitioning a reactor from a ziegler-natta catalyzed polymerization to a polymerization catalyzed by another type of catalyst system
EP2039677A4 (en) Organic compounds containing heteroatoms and their use in ziegler-natta catalyst with single activation center
WO2008081638A1 (en) PROCESS FOR PRODUCTION OF α-OLEFIN LOW POLYMERS
WO2004085488A3 (en) Methods of polymerizing olefin monomers with mixed catalyst systems
Lou et al. Recent developments in atom transfer radical polymerization (ATRP): methods to reduce metal catalyst concentrations
CA2508761A1 (en) Processes for transitioning between various polymerization catalysts
RU2011106788A (en) METHOD OF TRANSITION BETWEEN INCOMPATIBLE SYSTEMS OF CATALYSTS FOR POLYMERIZATION OF OLEFINS
WO2004080924A3 (en) Method of producing dinitrile compounds
WO2018050126A3 (en) Self-regulating external electron donor-containing catalyst used for alpha-olefin polymerisation, and application of catalyst
IN2012DN02743A (en)
TW200626238A (en) Methods for designing and operating a dehydrogenation process system that uses a high stability dehydrogenation catalyst
WO2009132053A3 (en) Olefin polymerization processes and catalysts for use therein
WO2011071900A3 (en) Methods for reducing static charge of a catalyst and methods for using the catalyst to produce polyolefins
EP4071157A4 (en) Transition metal compound, catalyst composition comprising same, and method for producing olefin polymer using catalyst composition
TW200710100A (en) Polypropylene having reduced residual metals