GB992122A - Method of producing poly olefines of high whiteness - Google Patents

Method of producing poly olefines of high whiteness

Info

Publication number
GB992122A
GB992122A GB4192061A GB4192061A GB992122A GB 992122 A GB992122 A GB 992122A GB 4192061 A GB4192061 A GB 4192061A GB 4192061 A GB4192061 A GB 4192061A GB 992122 A GB992122 A GB 992122A
Authority
GB
United Kingdom
Prior art keywords
aluminium
hydrogen
olefine
polymerization
partial pressure
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
GB4192061A
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.)
Scholven Chemie AG
Original Assignee
Scholven Chemie AG
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 Scholven Chemie AG filed Critical Scholven Chemie AG
Publication of GB992122A publication Critical patent/GB992122A/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
    • 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
    • C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • C08F110/02—Ethene

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

Polyolefines of high whiteness are prepared by polymerizing olefines in the presence of liquid diluents by means of mixed catalysts containing titanium tetrahalides and organo-metallic compounds of Group I to III of the Mendel<\>aeeff Table, under conditions of pressure and temperature such that the polymer is separated in the liquid as a solid phase which is then separated and washed out, characterized in that the polymerization is effected in the presence of hydrogen at a constant olefine-hydrogen partial pressure ratio, the hydrogen partial pressure being kept at less than 10% of the olefine partial pressure. Ethylene and its homologues are particularly suitable monomers. Suitable organo-metallic compounds mentioned are aluminium-organic compounds having 1 to 3 alkyl, aryl and/or cycloalkyl groups and up to 2 halide atoms in the molecule e.g. aluminium trialkyls, triaryls, tricycloalkyls, dialkyl aluminium halides and alkyl aluminium sesquihalides. Liquid hydrocarbons mentioned are butane, pentane, hexane, isopropylcylohexane, petrol and diesel oil fractions. Polymerization temperature is from 20 to 200 DEG C. and pressure is ordinary or slightly elevated. The polymerization may be carried out continuously or discontinuously in the presence of an inert diluent. The hydrogen is advantageously mixed with the olefine; in the case of a continuous process it can be introduced to the cycled gas.
GB4192061A 1960-11-30 1961-11-23 Method of producing poly olefines of high whiteness Expired GB992122A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESC028856 1960-11-30

Publications (1)

Publication Number Publication Date
GB992122A true GB992122A (en) 1965-05-19

Family

ID=7431241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4192061A Expired GB992122A (en) 1960-11-30 1961-11-23 Method of producing poly olefines of high whiteness

Country Status (5)

Country Link
BE (1) BE610942A (en)
DE (1) DE1520909B2 (en)
GB (1) GB992122A (en)
LU (1) LU40839A1 (en)
NL (1) NL271965A (en)

Also Published As

Publication number Publication date
LU40839A1 (en) 1962-01-20
BE610942A (en)
NL271965A (en)
DE1520909A1 (en) 1970-05-21
DE1520909B2 (en) 1970-05-21

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