GB824003A - Improvements in preparation of polyethylene - Google Patents

Improvements in preparation of polyethylene

Info

Publication number
GB824003A
GB824003A GB1037/57A GB103757A GB824003A GB 824003 A GB824003 A GB 824003A GB 1037/57 A GB1037/57 A GB 1037/57A GB 103757 A GB103757 A GB 103757A GB 824003 A GB824003 A GB 824003A
Authority
GB
United Kingdom
Prior art keywords
tetrahalide
catalyst
alkali metal
hydride
suspension
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1037/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metal Hydrides Inc
Original Assignee
Metal Hydrides Inc
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 Metal Hydrides Inc filed Critical Metal Hydrides Inc
Publication of GB824003A publication Critical patent/GB824003A/en
Expired legal-status Critical Current

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

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)

Abstract

A catalyst for the polymerization of ethylene consists of a mixture prepared by heating a tetrahalide of titanium, zirconium, hafnium or thorium with an alkali metal or an alkali metal hydride at between 100 DEG and 250 DEG C., the molar ratio of metal or hydride to tetrahalide being not less than two. The catalyst may be prepared by adding tetrahalide to a suspension of the other substance in an inert liquid, e.g. mineral oil or other liquid hydrocarbon such as benzene. U.S.A. Specification 2,720,444 is referred to.ALSO:Ethylene is polymerized at between 150 DEG C. and 250 DEG C. using as catalyst a mixture prepared by heating a tetrahalide of titanium, zirconium, hafnium or thorium with an alkali metal or an alkali metal hydride at between 100 DEG and 250 DEG C., the molar ratio of metal or hydride to tetrahalide being not less than two. The catalyst is usually prepared by adding the tetrahalide to a suspension of the other material in an inert liquid, e.g. mineral oil, and other liquid hydrocarbons such as benzene and the suspension produced may be used as such in the polymerization reaction. U.S.A. Specification 2,720,444 is referred to.
GB1037/57A 1956-01-10 1957-01-10 Improvements in preparation of polyethylene Expired GB824003A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US824003XA 1956-01-10 1956-01-10

Publications (1)

Publication Number Publication Date
GB824003A true GB824003A (en) 1959-11-25

Family

ID=22170956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1037/57A Expired GB824003A (en) 1956-01-10 1957-01-10 Improvements in preparation of polyethylene

Country Status (1)

Country Link
GB (1) GB824003A (en)

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