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 alcoholInfo
- 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
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.
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)
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 |
-
1959
- 1959-07-07 GB GB23301/59A patent/GB881073A/en not_active Expired
Cited By (4)
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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