JPS5543158A - Preparation of polyvinyl alcohol having improved dispersiblity in water - Google Patents
Preparation of polyvinyl alcohol having improved dispersiblity in waterInfo
- Publication number
- JPS5543158A JPS5543158A JP11720878A JP11720878A JPS5543158A JP S5543158 A JPS5543158 A JP S5543158A JP 11720878 A JP11720878 A JP 11720878A JP 11720878 A JP11720878 A JP 11720878A JP S5543158 A JPS5543158 A JP S5543158A
- Authority
- JP
- Japan
- Prior art keywords
- pva
- alcohol
- polyvinyl alcohol
- wet
- title
- 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
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
PURPOSE: To prepare the title polyvinyl alcohol useful as a textile finishing agent, economically, by blowing super-heated vapor of a solvent which does not dissolve polyvinyl alcohol (PVA) in a wet PVA obtained by the saponification of polyvinyl acetate, and drying the PVA under fluidized state.
CONSTITUTION: Polyvinyl acetate is dissolved in an alcohol, and saponified with a saponifying catalyst such as an alkali, and the resulting slurry is separtated into solid and liquid by a centrifugal separator, etc. to obtain wet PVA containing 30W60wt% of PVA, 50W30wt% of the alcohol, and 20W10wt% of the acetic acid ester of the alcohol. The PVA pref. has a polymerization degree of 200W3000, and a saponification degree of 75W100mol%. The wet PVA is fluidized by introducing super-heated vapor of a solvent which does not dissolve the PVA, e.g. alcohol, acetic acid ester, etc., by which the drying and the heat treatment of the PVA can be carried out simultaneously to obtain the title PVA.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11720878A JPS5543158A (en) | 1978-09-21 | 1978-09-21 | Preparation of polyvinyl alcohol having improved dispersiblity in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11720878A JPS5543158A (en) | 1978-09-21 | 1978-09-21 | Preparation of polyvinyl alcohol having improved dispersiblity in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5543158A true JPS5543158A (en) | 1980-03-26 |
| JPS6140682B2 JPS6140682B2 (en) | 1986-09-10 |
Family
ID=14706058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11720878A Granted JPS5543158A (en) | 1978-09-21 | 1978-09-21 | Preparation of polyvinyl alcohol having improved dispersiblity in water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5543158A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07109698A (en) * | 1993-08-20 | 1995-04-25 | Kuraray Co Ltd | Paper coating agent |
| KR100296785B1 (en) * | 1995-05-05 | 2001-10-25 | 티에보 다니엘 | Method for Purifying Polyvinyl Alcohol |
| KR100779522B1 (en) | 2005-07-30 | 2007-11-28 | 주식회사 엘지화학 | Method for producing polyvinyl alcohol resin having high degree of saponification |
-
1978
- 1978-09-21 JP JP11720878A patent/JPS5543158A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07109698A (en) * | 1993-08-20 | 1995-04-25 | Kuraray Co Ltd | Paper coating agent |
| KR100296785B1 (en) * | 1995-05-05 | 2001-10-25 | 티에보 다니엘 | Method for Purifying Polyvinyl Alcohol |
| KR100779522B1 (en) | 2005-07-30 | 2007-11-28 | 주식회사 엘지화학 | Method for producing polyvinyl alcohol resin having high degree of saponification |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6140682B2 (en) | 1986-09-10 |
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