GB841732A - Process of making colourless aqueous saline solutions of polyacrylonitrile - Google Patents

Process of making colourless aqueous saline solutions of polyacrylonitrile

Info

Publication number
GB841732A
GB841732A GB2998/58A GB299858A GB841732A GB 841732 A GB841732 A GB 841732A GB 2998/58 A GB2998/58 A GB 2998/58A GB 299858 A GB299858 A GB 299858A GB 841732 A GB841732 A GB 841732A
Authority
GB
United Kingdom
Prior art keywords
solution
zinc halide
solvent
solutions
reduce
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
GB2998/58A
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 US409526A priority Critical patent/US2837492A/en
Application filed by Individual filed Critical Individual
Priority to GB2998/58A priority patent/GB841732A/en
Priority to FR1205219D priority patent/FR1205219A/en
Publication of GB841732A publication Critical patent/GB841732A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • 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
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/18—Homopolymers or copolymers of nitriles
    • C08J2333/20—Homopolymers or copolymers of acrylonitrile

Abstract

Polymers consisting of at least 85% of acrylonitrile are dissolved in aqueous zinc halide solutions by a process which comprises acidifying the zinc halide solution with a watersoluble non-oxidising acid which forms only colourless and water-soluble salts with the cations present in the solution, the amount of acid being such as to reduce the pH of the solution to a value of a solution in water of the zinc halide at the same concentration, the reduce pH value not exceeding 4,0, and thereafter using the so-acidified solution as the solvent for the polymer, for example by polymerizing acrylointrile with the aid of potassium persulphate or hydrogen peroxide whilst dissolved in the solvent medium. Acids specified are hydrogen halides and sulphuric, phosphoric, formic, acetic, chloroacetic, lactic, butyric and citric acids. The solvent solutions may contain salts such as calcium andmagnesium chlorides in addition to the zinc halide, which is preferably zinc chloride. Specifications 729,382, 748,954 and 786,139 are referred to.
GB2998/58A 1954-02-10 1958-01-29 Process of making colourless aqueous saline solutions of polyacrylonitrile Expired GB841732A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US409526A US2837492A (en) 1954-02-10 1954-02-10 Process of making colorless aqueous saline solutions of polyacrylonitrile
GB2998/58A GB841732A (en) 1958-01-29 1958-01-29 Process of making colourless aqueous saline solutions of polyacrylonitrile
FR1205219D FR1205219A (en) 1958-01-29 1958-03-13 Process for obtaining aqueous and colorless saline solutions of polyacrylonitrile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2998/58A GB841732A (en) 1958-01-29 1958-01-29 Process of making colourless aqueous saline solutions of polyacrylonitrile

Publications (1)

Publication Number Publication Date
GB841732A true GB841732A (en) 1960-07-20

Family

ID=9750012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2998/58A Expired GB841732A (en) 1954-02-10 1958-01-29 Process of making colourless aqueous saline solutions of polyacrylonitrile

Country Status (2)

Country Link
FR (1) FR1205219A (en)
GB (1) GB841732A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153809A2 (en) * 1984-02-10 1985-09-04 Nikkiso Co., Ltd. A process for preparing acrylonitrile-based filaments for carbon fibres free of agglutination

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB947728A (en) * 1960-07-16 1964-01-29 Toho Rayon Kk Method for the photopolymerization of acrylonitrile in aqueous zinc chloride solution

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0153809A2 (en) * 1984-02-10 1985-09-04 Nikkiso Co., Ltd. A process for preparing acrylonitrile-based filaments for carbon fibres free of agglutination
EP0153809A3 (en) * 1984-02-10 1986-04-16 Nikkiso Co., Ltd. A process for preparing acrylonitrile-based filaments for carbon fibres free of agglutination

Also Published As

Publication number Publication date
FR1205219A (en) 1960-02-01

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