GB881073A - A method of producing an aqueous solution of high concentration of polyvinyl alcohol - Google Patents

A method of producing an aqueous solution of high concentration of polyvinyl alcohol

Info

Publication number
GB881073A
GB881073A GB23301/59A GB2330159A GB881073A GB 881073 A GB881073 A GB 881073A GB 23301/59 A GB23301/59 A GB 23301/59A GB 2330159 A GB2330159 A GB 2330159A GB 881073 A GB881073 A GB 881073A
Authority
GB
United Kingdom
Prior art keywords
polyvinyl alcohol
producing
aqueous solution
high concentration
extruder
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
GB23301/59A
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.)
Kurashiki Rayon Co Ltd
Original Assignee
Kurashiki Rayon Co Ltd
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 Kurashiki Rayon Co Ltd filed Critical Kurashiki Rayon Co Ltd
Publication of GB881073A publication Critical patent/GB881073A/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
    • C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
    • 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
    • C08F8/00—Chemical modification by after-treatment
    • 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
    • C08J2329/00—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 at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Aqueous solutions of polyvinyl alcohol of 35 to 65% concentration are produced by means of a screw-type extruder from a mixture of polyvinyl alcohol and water wherein the temperature at the inlet of the extruder and for between 5 and 40% of the total length of the screw is maintained at a temperature not exceeding 90 DEG C. and the exit of the extruder is maintained at between 110 DEG C. and 160 DEG C.
GB23301/59A 1958-07-18 1959-07-07 A method of producing an aqueous solution of high concentration of polyvinyl alcohol Expired GB881073A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP881074X 1958-07-18
JP881073X 1958-07-18

Publications (1)

Publication Number Publication Date
GB881073A true GB881073A (en) 1961-11-01

Family

ID=34117707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23301/59A Expired GB881073A (en) 1958-07-18 1959-07-07 A method of producing an aqueous solution of high concentration of polyvinyl alcohol

Country Status (1)

Country Link
GB (1) GB881073A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374993A2 (en) * 1988-12-09 1990-06-27 Amylum, N.V. Use of a mixture of starch and polyvinylalcohol
DE102007026166A1 (en) * 2007-06-04 2008-12-11 Kuraray Europe Gmbh Thermoplastic shaping of polyvinyl alcohol for manufacturing granulates, foil, fibers or coating for use in pharmaceutical or cosmetic applications, involves accomplishing shaping in absence of extrusion additive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0374993A2 (en) * 1988-12-09 1990-06-27 Amylum, N.V. Use of a mixture of starch and polyvinylalcohol
EP0374993A3 (en) * 1988-12-09 1990-10-10 Amylum, N.V. Procedure for the manufacture of a mixture of starch and polyvinyl alcohol and thus manufactured mixture
US5032337A (en) * 1988-12-09 1991-07-16 Amylum, Naamloze Vennootschap Procedure for the manufacture of a mixture of starch and polyvinyl alcohol and thus manufactured mixture
DE102007026166A1 (en) * 2007-06-04 2008-12-11 Kuraray Europe Gmbh Thermoplastic shaping of polyvinyl alcohol for manufacturing granulates, foil, fibers or coating for use in pharmaceutical or cosmetic applications, involves accomplishing shaping in absence of extrusion additive

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