WO2001000690A3 - Multi-stage process for producing polyethene - Google Patents

Multi-stage process for producing polyethene Download PDF

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Publication number
WO2001000690A3
WO2001000690A3 PCT/FI2000/000580 FI0000580W WO0100690A3 WO 2001000690 A3 WO2001000690 A3 WO 2001000690A3 FI 0000580 W FI0000580 W FI 0000580W WO 0100690 A3 WO0100690 A3 WO 0100690A3
Authority
WO
WIPO (PCT)
Prior art keywords
stage process
producing
polyethene
phase polymerisation
polymerisation step
Prior art date
Application number
PCT/FI2000/000580
Other languages
French (fr)
Other versions
WO2001000690A2 (en
Inventor
Vidar Almqvist
Arild Follestad
Original Assignee
Borealis Tech Oy
Vidar Almqvist
Arild Follestad
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 Borealis Tech Oy, Vidar Almqvist, Arild Follestad filed Critical Borealis Tech Oy
Priority to AU58297/00A priority Critical patent/AU5829700A/en
Publication of WO2001000690A2 publication Critical patent/WO2001000690A2/en
Publication of WO2001000690A3 publication Critical patent/WO2001000690A3/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
    • C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
    • C08F297/08—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
    • 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
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • 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
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
    • 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)
  • Inorganic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyethers (AREA)

Abstract

The invention relates to a multi-stage process for producing ethene homo or copolymer, which multi-stage process comprises, in any order, at least a liquid-phase polymerisation step (a) and a gas-phase polymerisation step (b). The process is characterised in that the polymerisation is carried out in the presence of a chromium catalyst. According to an embodiment of the invention, the molar masses and/or melt flow rates of the ethene homo or copolymers produced in steps (a) and (b) are essentially identical.
PCT/FI2000/000580 1999-06-29 2000-06-28 Multi-stage process for producing polyethene WO2001000690A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU58297/00A AU5829700A (en) 1999-06-29 2000-06-28 Multi-stage process for producing polyethene

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI991480A FI991480A0 (en) 1999-06-29 1999-06-29 Multi-step process for the production of polyethylene Flerstegsprocess för Produktion av polyeten
FI991480 1999-06-29

Publications (2)

Publication Number Publication Date
WO2001000690A2 WO2001000690A2 (en) 2001-01-04
WO2001000690A3 true WO2001000690A3 (en) 2001-05-10

Family

ID=8554983

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000580 WO2001000690A2 (en) 1999-06-29 2000-06-28 Multi-stage process for producing polyethene

Country Status (3)

Country Link
AU (1) AU5829700A (en)
FI (1) FI991480A0 (en)
WO (1) WO2001000690A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11674023B2 (en) * 2020-10-15 2023-06-13 Chevron Phillips Chemical Company Lp Polymer composition and methods of making and using same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992012182A1 (en) * 1990-12-28 1992-07-23 Neste Oy Multi-stage process for producing polyethylene
WO1997027225A1 (en) * 1996-01-26 1997-07-31 Borealis A/S Process for producing polyethylenes having a broad molecular weight distribution, and a catalyst system used thereby
EP0829495A1 (en) * 1996-09-13 1998-03-18 Fina Research S.A. Process for the preparation of polyethylene having a broad molecular weight distribution

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992012182A1 (en) * 1990-12-28 1992-07-23 Neste Oy Multi-stage process for producing polyethylene
WO1997027225A1 (en) * 1996-01-26 1997-07-31 Borealis A/S Process for producing polyethylenes having a broad molecular weight distribution, and a catalyst system used thereby
EP0829495A1 (en) * 1996-09-13 1998-03-18 Fina Research S.A. Process for the preparation of polyethylene having a broad molecular weight distribution

Also Published As

Publication number Publication date
FI991480A0 (en) 1999-06-29
WO2001000690A2 (en) 2001-01-04
AU5829700A (en) 2001-01-31

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