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WO1999045038A8 - A process for polymerizing an olefin - Google Patents

A process for polymerizing an olefin

Info

Publication number
WO1999045038A8
WO1999045038A8 PCT/US1999/004735 US9904735W WO9945038A8 WO 1999045038 A8 WO1999045038 A8 WO 1999045038A8 US 9904735 W US9904735 W US 9904735W WO 9945038 A8 WO9945038 A8 WO 9945038A8
Authority
WO
WIPO (PCT)
Prior art keywords
catalyst system
support
cocatalyst
polymer density
polymerizing
Prior art date
Application number
PCT/US1999/004735
Other languages
French (fr)
Other versions
WO1999045038A1 (en
Inventor
Steven Joseph Secora
Anthony Patrick Eaton
Max Paul Mcdaniel
Elizabeth Ann Benham
Original Assignee
Phillips Petroleum Co
Steven Joseph Secora
Anthony Patrick Eaton
Max Paul Mcdaniel
Elizabeth Ann Benham
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 Phillips Petroleum Co, Steven Joseph Secora, Anthony Patrick Eaton, Max Paul Mcdaniel, Elizabeth Ann Benham filed Critical Phillips Petroleum Co
Priority to AU28935/99A priority Critical patent/AU2893599A/en
Publication of WO1999045038A1 publication Critical patent/WO1999045038A1/en
Publication of WO1999045038A8 publication Critical patent/WO1999045038A8/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
    • 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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

A process to control the polymer density in slurry ethylene polymerization processes comprising precontacting a catalyst system and cocatalyst for a time sufficient to reduce polymer density is provided. The catalyst system comprises chromium supported on a silica-titania support wherein the support comprises from about 2 to about 20 weight percent titanium, based on the weight of the support, and wherein the catalyst system has been activated in an oxygen-containing ambient and subsequently reduced in the presence of carbon monoxide. The cocatalyst is a trialkyl boron compound.
PCT/US1999/004735 1998-03-04 1999-03-03 A process for polymerizing an olefin WO1999045038A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU28935/99A AU2893599A (en) 1998-03-04 1999-03-03 A process for polymerizing an olefin

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3444798A 1998-03-04 1998-03-04
US09/034,447 1998-03-04

Publications (2)

Publication Number Publication Date
WO1999045038A1 WO1999045038A1 (en) 1999-09-10
WO1999045038A8 true WO1999045038A8 (en) 2000-03-02

Family

ID=21876477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/004735 WO1999045038A1 (en) 1998-03-04 1999-03-03 A process for polymerizing an olefin

Country Status (2)

Country Link
AU (1) AU2893599A (en)
WO (1) WO1999045038A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100377287B1 (en) * 2000-05-29 2003-03-26 삼성종합화학주식회사 Ethylene polymerization method
US6982304B2 (en) 2003-12-22 2006-01-03 Union Carbide Chemicals & Plastics Technology Corporation Blow molding resins with improved ESCR
US20080269441A1 (en) * 2007-04-30 2008-10-30 Gerhard Guenther Polymerization process providing polyethylene of enhanced optical properties

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4735931A (en) * 1986-06-16 1988-04-05 Phillips Petroleum Company In situ comonomer generation in olefin polymerization

Also Published As

Publication number Publication date
WO1999045038A1 (en) 1999-09-10
AU2893599A (en) 1999-09-20

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