GB701293A - Improvements in the production of polyacrylonitrile - Google Patents

Improvements in the production of polyacrylonitrile

Info

Publication number
GB701293A
GB701293A GB133/51A GB13351A GB701293A GB 701293 A GB701293 A GB 701293A GB 133/51 A GB133/51 A GB 133/51A GB 13351 A GB13351 A GB 13351A GB 701293 A GB701293 A GB 701293A
Authority
GB
United Kingdom
Prior art keywords
carbon dioxide
polyacrylonitrile
pressure
redox catalyst
polymer
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
GB133/51A
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
Priority to DEC3403A priority Critical patent/DE925430C/en
Priority to FR1030277D priority patent/FR1030277A/en
Application filed by Individual filed Critical Individual
Priority to GB133/51A priority patent/GB701293A/en
Priority to US255567A priority patent/US2642418A/en
Priority to DEC5896A priority patent/DE939053C/en
Priority to GB20005/52A priority patent/GB769303A/en
Priority to US355418A priority patent/US2745825A/en
Publication of GB701293A publication Critical patent/GB701293A/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
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/42—Nitriles
    • C08F20/44—Acrylonitrile
    • 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
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Artificial Filaments (AREA)

Abstract

Polyacrylonitrile is made by polymerizing, batchwise or continuously, an aqueous dispersion of acrylonitrile in the presence of a water soluble redox catalyst system and employing carbon dioxide, preferably under pressure, to maintain and regulate an acid pH, e.g. between 4 and 4.5. The polymerization may be terminated at any stage by releasing the carbon dioxide pressure. The redox catalyst may be a mixture of potassium persulphate and sodium bisulphite. The polymer dispersion may be treated with steam under reduced pressure to remove carbon dioxide and unreacted monomer. The polymer may be dry spun into threads.
GB133/51A 1950-11-14 1951-01-02 Improvements in the production of polyacrylonitrile Expired GB701293A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DEC3403A DE925430C (en) 1950-11-14 1950-11-14 Process for the production of polyacrylonitrile
FR1030277D FR1030277A (en) 1950-11-14 1950-12-29 Process for the production of polyacrylic nitrile
GB133/51A GB701293A (en) 1951-01-02 1951-01-02 Improvements in the production of polyacrylonitrile
US255567A US2642418A (en) 1950-11-14 1951-11-09 Process for the production of polyacrylic nitrile
DEC5896A DE939053C (en) 1950-11-14 1952-05-28 Process for the production of polyacrylonitrile
GB20005/52A GB769303A (en) 1950-11-14 1952-08-08 Improvements in the production of polyacrylonitrile
US355418A US2745825A (en) 1950-11-14 1953-05-15 Process for the production of polyacrylonitrile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB133/51A GB701293A (en) 1951-01-02 1951-01-02 Improvements in the production of polyacrylonitrile

Publications (1)

Publication Number Publication Date
GB701293A true GB701293A (en) 1953-12-23

Family

ID=9698998

Family Applications (1)

Application Number Title Priority Date Filing Date
GB133/51A Expired GB701293A (en) 1950-11-14 1951-01-02 Improvements in the production of polyacrylonitrile

Country Status (1)

Country Link
GB (1) GB701293A (en)

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