GB829626A - Improvements in or relating to olefine polymerisation catalysts and to olefine polymerisation processes involving the same - Google Patents

Improvements in or relating to olefine polymerisation catalysts and to olefine polymerisation processes involving the same

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Publication number
GB829626A
GB829626A GB25148/55A GB2514855A GB829626A GB 829626 A GB829626 A GB 829626A GB 25148/55 A GB25148/55 A GB 25148/55A GB 2514855 A GB2514855 A GB 2514855A GB 829626 A GB829626 A GB 829626A
Authority
GB
United Kingdom
Prior art keywords
compound
catalyst
organo
aluminium
amount
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
GB25148/55A
Inventor
Norbert Waldemar Luft
Dhafir Yusuf Waddan
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.)
Petrochemicals Ltd
Original Assignee
Petrochemicals Ltd
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 Petrochemicals Ltd filed Critical Petrochemicals Ltd
Priority to GB25148/55A priority Critical patent/GB829626A/en
Publication of GB829626A publication Critical patent/GB829626A/en
Expired legal-status Critical Current

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/584—Recycling of catalysts

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  • 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

In the preparation of Ziegler-type catalysts the complex formed by reducing the Group IV to VI compound with an organo-metallic compound or a derivative thereof is separated and mixed with a further amount of the second compound. For example, titanium tetrachloride is mixed with aluminium diethyl chloride, and the resulting brown precipitate is suspended in iso-octane and a further quantity of aluminium diethyl chloride added, which may be the supernatant liquor from the first reaction still containing the aluminium compound, to form the final catalyst. It is stated that the yield of polymer is a function of the amount of the first precipitated compound used, while the amount of the metallo-organic compound controls molecular weight of the product. Polymerisation may first proceed with the original precipitate as catalyst, and the organo-metallic compound which may be the same or different from that used in the first stage, added at a later stage or stages to reactivate the catalyst. The process is applied to olefines especially mono-olefines to give solid polymers and co-polymers using the catalyst components described in Specifications 799,392, 799,823, 801,031, 829,627 and 829,628.ALSO:In the preparation of catalysts of the Ziegler type for low-pressure polymerization of olefines, the complex formed by reducing the Group IV to Group VI compound with an organo-metallic compound or a derivative thereof is separated and mixed with a further amount of the organo-metallic compound. For example, titanium tetrachloride is mixed with aluminium di-ethyl chloride, and the resulting brown precipitate is suspended in iso-octane and a further quantity of aluminium di-ethyl chloride added, which may be the supernatant liquor from the first reaction still containing the aluminium compound, to form the final catalyst. It is stated that the yield of polymer is a function of the amount of the first complex used, while the amount of the organo-metallic compound controls the molecular weight of the product. Polymerization may first proceed with the original precipitated complex as catalyst, and the organo-metallic compound, which may be the same or different from that used in the first stage, added at a later stage or stages to reactivate the catalyst. The process is applied to olefines especially mono-olefines, e.g. ethylene, to give solid polymers and co-polymers using the catalyst components described in Specifications 799,392, 799,823, 801,031, 829,627 and 829,628.
GB25148/55A 1955-09-01 1955-09-01 Improvements in or relating to olefine polymerisation catalysts and to olefine polymerisation processes involving the same Expired GB829626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB25148/55A GB829626A (en) 1955-09-01 1955-09-01 Improvements in or relating to olefine polymerisation catalysts and to olefine polymerisation processes involving the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25148/55A GB829626A (en) 1955-09-01 1955-09-01 Improvements in or relating to olefine polymerisation catalysts and to olefine polymerisation processes involving the same

Publications (1)

Publication Number Publication Date
GB829626A true GB829626A (en) 1960-03-02

Family

ID=10223007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25148/55A Expired GB829626A (en) 1955-09-01 1955-09-01 Improvements in or relating to olefine polymerisation catalysts and to olefine polymerisation processes involving the same

Country Status (1)

Country Link
GB (1) GB829626A (en)

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