GB782970A - Polymerisation catalyst - Google Patents

Polymerisation catalyst

Info

Publication number
GB782970A
GB782970A GB5544/56A GB554456A GB782970A GB 782970 A GB782970 A GB 782970A GB 5544/56 A GB5544/56 A GB 5544/56A GB 554456 A GB554456 A GB 554456A GB 782970 A GB782970 A GB 782970A
Authority
GB
United Kingdom
Prior art keywords
sodium
pentyl
styrene
parts
isopropoxide
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
GB5544/56A
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.)
Polysar Ltd
Polymer Corp
Original Assignee
Polysar Ltd
Polymer Corp
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 Polysar Ltd, Polymer Corp filed Critical Polysar Ltd
Publication of GB782970A publication Critical patent/GB782970A/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
    • C08F4/00—Polymerisation catalysts
    • C08F4/06—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen
    • C08F4/12—Metallic compounds other than hydrides and other than metallo-organic compounds; Boron halide or aluminium halide complexes with organic compounds containing oxygen of boron, aluminium, gallium, indium, thallium or rare earths
    • 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
    • C08F2/00—Processes of polymerisation
    • 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
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers and copolymers 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
    • C08F36/04—Homopolymers and copolymers 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Catalysts (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

A catalyst for polymerizing unsaturated hydrocarbons, consists of a mixture of sodium chloride, n-pentyl sodium and sodium isopropoxide, made by reacting pentyl chloride with sodium to form n-pentyl sodium and sodium chloride, and then treating a portion of the n-pentyl sodium with isopropyl alcohol. Preferred proportions are sodium chloride 100 parts by weight, n-pentyl sodium 60 to 30 parts, and sodium isopropoxide 40 to 70 parts. Starting materials specified are conjugated di-olefines, e.g. butadiene, pentadiene and homologues up to dodecadiene. Co-polymerizable materials may be added including vinyl aromatic compounds, e.g. styrene, p-methyl styrene, chlorostyrene, and isoprene. Polymerization is effected at a temperature of -800 DEG to +60 DEG C., but preferably at -10 DEG to +30 DEG C., above which undesirable amounts of diene polymer occur. Solvents such as n-pentane or other inert hydrocarbons may be used. Polymers may be vulcanized to form a synthetic rubber by heating and curing a mixture of the polymer and carbon black, a plasticiser consisting of high molecular weight hydrocarbons, stearic acid, zinc oxide, sulphur, and N-cyclohexyl-2-benzothiazylsulphonamide.ALSO:A catalyst for polymerizing conjugated diolefins consists of a mixture of sodium chloride, n-pentyl sodium, and sodium isopropoxide, the preferred proportions being respectively 100, 60 to 30, and 40 to 70 parts by weight. Starting materials specified are butadiene, pentadiene and homologues up to dodecadiene. Co-polymerizable substances may be added, including vinyl aromatic compounds, e.g. styrene, p-methyl styrene and chloro-styrene, and isoprene. Solvents such as n-pentane may be used. The ratio of 1,4 to 1,2 addition may be controlled by the amount of isopropoxide used. The polymer may be cured by heating it with carbon black, a plasticiser consisting of high molecular weight hydrocarbons, stearic acid, zinc oxide, sulphur, and N-cyclohexyl 2-benzothiazylsulphonamide.
GB5544/56A 1955-02-28 1956-02-22 Polymerisation catalyst Expired GB782970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA782970X 1955-02-28

Publications (1)

Publication Number Publication Date
GB782970A true GB782970A (en) 1957-09-18

Family

ID=4172460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5544/56A Expired GB782970A (en) 1955-02-28 1956-02-22 Polymerisation catalyst

Country Status (3)

Country Link
DE (1) DE1092206B (en)
FR (1) FR1161023A (en)
GB (1) GB782970A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953409A (en) * 1969-05-31 1976-04-27 Japan Synthetic Rubber Co., Ltd. Process for producing conjugated diolefinic polymers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE608094A (en) * 1960-11-14

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953409A (en) * 1969-05-31 1976-04-27 Japan Synthetic Rubber Co., Ltd. Process for producing conjugated diolefinic polymers

Also Published As

Publication number Publication date
FR1161023A (en) 1958-08-19
DE1092206B (en) 1960-11-03

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