JPS5686936A - Production of polyvinyl alcohol aqueous solution - Google Patents

Production of polyvinyl alcohol aqueous solution

Info

Publication number
JPS5686936A
JPS5686936A JP16541579A JP16541579A JPS5686936A JP S5686936 A JPS5686936 A JP S5686936A JP 16541579 A JP16541579 A JP 16541579A JP 16541579 A JP16541579 A JP 16541579A JP S5686936 A JPS5686936 A JP S5686936A
Authority
JP
Japan
Prior art keywords
pva
aqueous solution
aqueous
inlet
water
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.)
Granted
Application number
JP16541579A
Other languages
Japanese (ja)
Other versions
JPS601333B2 (en
Inventor
Hirotoshi Yamamoto
Hiroshi Saijo
Kikuo Tamura
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.)
Shibaura Machine Co Ltd
Original Assignee
Toshiba Machine 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 Toshiba Machine Co Ltd filed Critical Toshiba Machine Co Ltd
Priority to JP16541579A priority Critical patent/JPS601333B2/en
Publication of JPS5686936A publication Critical patent/JPS5686936A/en
Publication of JPS601333B2 publication Critical patent/JPS601333B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE: A powder of PVA is fed to a high-speed shear intermesing type double- screw extruder and water or aqueous PVA is added from two inlets in order to effect mixing, thus producting a high-quality high-concentration aqueous PVA for making films through a one-step process.
CONSTITUTION: A PVA powder without any specific processig is quantitatively fed from inlet 5 to a high-speed shear intermeshing type double-screw extruder. After the powder passes through the barrel at a constant speed, water or an aqueous solution containing less than 25wt% of PVA is added from inlet 11 with a metering device under low pressures and they are melt kneaded so that a homogeneous PVA solution contains more than 50wt% of PVA. Further, water or aqueous PVA is quantitatively added from inlet 17 and a homogeneous PVA aqueous solution is obtained from the end of the extruder. A high-quality PVA aqueous solution is continuously obtained without loss through a one-step process.
COPYRIGHT: (C)1981,JPO&Japio
JP16541579A 1979-12-19 1979-12-19 Method for producing polyvinyl alcohol aqueous solution Expired JPS601333B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16541579A JPS601333B2 (en) 1979-12-19 1979-12-19 Method for producing polyvinyl alcohol aqueous solution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16541579A JPS601333B2 (en) 1979-12-19 1979-12-19 Method for producing polyvinyl alcohol aqueous solution

Publications (2)

Publication Number Publication Date
JPS5686936A true JPS5686936A (en) 1981-07-15
JPS601333B2 JPS601333B2 (en) 1985-01-14

Family

ID=15811975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16541579A Expired JPS601333B2 (en) 1979-12-19 1979-12-19 Method for producing polyvinyl alcohol aqueous solution

Country Status (1)

Country Link
JP (1) JPS601333B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6189232A (en) * 1984-09-28 1986-05-07 デーエスエム・ナムローゼ・フェンノートシャップ Continuous production of polymer uniform solution

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6189232A (en) * 1984-09-28 1986-05-07 デーエスエム・ナムローゼ・フェンノートシャップ Continuous production of polymer uniform solution

Also Published As

Publication number Publication date
JPS601333B2 (en) 1985-01-14

Similar Documents

Publication Publication Date Title
JPS562149A (en) Continuous manufacture of aqueous dispersion of olefin resin
ES472037A1 (en) Process for making amine oxide solution of cellulose
ATE202125T1 (en) METHOD FOR PRODUCING THERMOPLASTS
GB9017300D0 (en) Starch treatment process
JPS56162617A (en) Preparation of film
FI870729A (en) ANORDNING OCH FOERFARANDE FOER BEHANDLING AV VISKOSMATERIAL.
ES422164A1 (en) Material and apparatus for extruding a crosslinked polyolefin product
SE7900602L (en) PROCEDURE AND DEVICE FOR FORMING A FEED PRODUCT
GB780105A (en) Filtering liner for barrels of extrusion machines
JPS5310377A (en) Tablet making method for deoxidizing agent
JPS57110429A (en) Mixing and dispersing apparatus in molten resin extruder
JPS5584503A (en) Preparing cellulose ester based selective permeable membrane
JPS5686936A (en) Production of polyvinyl alcohol aqueous solution
JPS5571445A (en) Production of lactose hydrolyzate
JPS5780037A (en) High degree kneading type screw
GB1105036A (en) A continuous process and apparatus for the manufacture of dynamite
ES402980A1 (en) Production of soap bars
JPS52124097A (en) Production of polyimine
GB1536542A (en) Apparatus suitable for use in processing rubber or plastics materials
JPS5296231A (en) Production of acetylcellulose pulp
JPS5247848A (en) Process for preparing acrylonitrile polymer solutions
JPS5265215A (en) Granulating method of sorbic acid
JPS57140639A (en) Apparatus for preparing capsule
JPS5433565A (en) Process for controlling rotational speed of screw
GB1111203A (en) Improvements in and relating to the manufacture of alkali cellulose and cellulose ethers