JPS54150468A - Modification of polyvinyl alcohol - Google Patents
Modification of polyvinyl alcoholInfo
- Publication number
- JPS54150468A JPS54150468A JP6017678A JP6017678A JPS54150468A JP S54150468 A JPS54150468 A JP S54150468A JP 6017678 A JP6017678 A JP 6017678A JP 6017678 A JP6017678 A JP 6017678A JP S54150468 A JPS54150468 A JP S54150468A
- Authority
- JP
- Japan
- Prior art keywords
- polyvinyl alcohol
- mole
- heat
- modification
- medium
- 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
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
PURPOSE: To obtain polyvinyl alcohol (P) scarcely showing solubility in warm water at room temperature to 50°C and crosslinking with boric acic and borax, by heat- treating P powder dispersed in a specific medium.
CONSTITUTION: Polyvinyl alcohol powder (P) having a saponification degree ≥ 95 mole %, preferably 97W100 mole %, is disperased in a medium having a boiling point ≥70°C of (A) a polyhydric alcohol, e.g. an alkylene glycol or glycerol, or a mixture of (A) and (B) a non-solvent, e.g. methanol or n-butanol, for P at a weight ratio of (A) to (B) of 90:10W10:90 to give a solid concentration of 10W 30wt.%. The dispersion thus obtained is heat-treated at 70W160°C for 30 minW 2 hr.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6017678A JPS6056176B2 (en) | 1978-05-19 | 1978-05-19 | Method for modifying polyvinyl alcohol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6017678A JPS6056176B2 (en) | 1978-05-19 | 1978-05-19 | Method for modifying polyvinyl alcohol |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54150468A true JPS54150468A (en) | 1979-11-26 |
JPS6056176B2 JPS6056176B2 (en) | 1985-12-09 |
Family
ID=13134574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6017678A Expired JPS6056176B2 (en) | 1978-05-19 | 1978-05-19 | Method for modifying polyvinyl alcohol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6056176B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4478971A (en) * | 1983-07-08 | 1984-10-23 | Shakespeare Company | High temperature extruded polyvinyl alcohol monofilament and process for the preparation thereof |
US7022740B2 (en) | 2004-04-29 | 2006-04-04 | Leonard Mackles | Lubricious ophthalmic solutions |
CN110054856A (en) * | 2019-04-22 | 2019-07-26 | 常州大学 | The preparation method and applications of low temperature resistant self-healing hydrogel |
-
1978
- 1978-05-19 JP JP6017678A patent/JPS6056176B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4478971A (en) * | 1983-07-08 | 1984-10-23 | Shakespeare Company | High temperature extruded polyvinyl alcohol monofilament and process for the preparation thereof |
US7022740B2 (en) | 2004-04-29 | 2006-04-04 | Leonard Mackles | Lubricious ophthalmic solutions |
CN110054856A (en) * | 2019-04-22 | 2019-07-26 | 常州大学 | The preparation method and applications of low temperature resistant self-healing hydrogel |
CN110054856B (en) * | 2019-04-22 | 2022-01-25 | 常州大学 | Preparation method and application of low-temperature-resistant self-healing hydrogel |
Also Published As
Publication number | Publication date |
---|---|
JPS6056176B2 (en) | 1985-12-09 |
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