GB856317A - Process for polymerizing isoprene - Google Patents

Process for polymerizing isoprene

Info

Publication number
GB856317A
GB856317A GB119159A GB119159A GB856317A GB 856317 A GB856317 A GB 856317A GB 119159 A GB119159 A GB 119159A GB 119159 A GB119159 A GB 119159A GB 856317 A GB856317 A GB 856317A
Authority
GB
United Kingdom
Prior art keywords
aluminium
ether
organo
aralkyl
isoprene
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
GB119159A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB119159A priority Critical patent/GB856317A/en
Publication of GB856317A publication Critical patent/GB856317A/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
    • C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
    • C08F136/08—Isoprene

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

Isoprene is polymerized in the presence of titanium tetrachloride and an etherate of an organo-aluminium compound but in the absence of free ether; the products have an essentially cis:1, 4 configuration. The organo-aluminium compound may have the formula A1 R1R2R3 wherein R1 is alkyl, aryl or aralkyl and R2 and R3 are alkyl, aryl, aralkyl or hydrogen, a large number being specified; the used of aluminium triethyl and triisobutyl are exemplified. The ether used to form the etherate may be dimethyl, diethyl, di-n-propyl, di-isopropyl, di-n-butyl, di-isobutyl, or diamyl ether. The mol ratio of aluminium to titanium can be 0,5 to 2 and the total amount of catalyst 0,5-5 parts per 100 parts by weight of isoprene. Inert diluents may be present, e.g. cyclohexane, heptane, hexane, pentane or benzene, or mass polymerization may be used, or isoprene vapour can be contacted with the catalyst.ALSO:A catalyst for polymerizing isoprene comprises titanium tetrachloride and an etherate of an organo-aluminium compound, free ether being absent. The organo-aluminium may have the formula Al R1 R2 R3 where R1 is alkyl, aryl or aralkyl and R2 and R3 are hydrogen, alkyl, aryl or aralkyl. A large number are specified and the uses of the triethyl and triisobutyl are exemplified. The ether may be dimethyl, diethyl, di-n- or -iso-propyl, di-n- or -iso-butyl or diamyl ether. The mol ratio of aluminium to titanium can be from 0.5 to 2.
GB119159A 1959-01-13 1959-01-13 Process for polymerizing isoprene Expired GB856317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB119159A GB856317A (en) 1959-01-13 1959-01-13 Process for polymerizing isoprene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB119159A GB856317A (en) 1959-01-13 1959-01-13 Process for polymerizing isoprene

Publications (1)

Publication Number Publication Date
GB856317A true GB856317A (en) 1960-12-14

Family

ID=9717757

Family Applications (1)

Application Number Title Priority Date Filing Date
GB119159A Expired GB856317A (en) 1959-01-13 1959-01-13 Process for polymerizing isoprene

Country Status (1)

Country Link
GB (1) GB856317A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228422B (en) * 1961-02-04 1966-11-10 Snam Spa Process for the stereospecific polymerization of isoprene
DE1258095B (en) * 1964-06-12 1968-01-04 Goodyear Tire & Rubber Process for the polymerization of conjugated diolefins
US3462405A (en) * 1962-08-03 1969-08-19 Goodyear Tire & Rubber Preparation of polymerization catalyst

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1228422B (en) * 1961-02-04 1966-11-10 Snam Spa Process for the stereospecific polymerization of isoprene
US3462405A (en) * 1962-08-03 1969-08-19 Goodyear Tire & Rubber Preparation of polymerization catalyst
DE1258095B (en) * 1964-06-12 1968-01-04 Goodyear Tire & Rubber Process for the polymerization of conjugated diolefins

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