JPS56167713A - Production of porous polyvinyl acetal product having excellent water absorption and water retention - Google Patents
Production of porous polyvinyl acetal product having excellent water absorption and water retentionInfo
- Publication number
- JPS56167713A JPS56167713A JP7241980A JP7241980A JPS56167713A JP S56167713 A JPS56167713 A JP S56167713A JP 7241980 A JP7241980 A JP 7241980A JP 7241980 A JP7241980 A JP 7241980A JP S56167713 A JPS56167713 A JP S56167713A
- Authority
- JP
- Japan
- Prior art keywords
- water
- product
- porous
- polyvinyl acetal
- monomer
- 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
- Treatments Of Macromolecular Shaped Articles (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Graft Or Block Polymers (AREA)
Abstract
PURPOSE: To obtain titled porous product useful as a water-absorbing agent for human bodies, a water-absorbing roll or a water-retaining agent for gardening, by grafting a water-double monomer to a partially acetalized porous polyvinyl acetal product thereby to introduce therein strongly hydrophilic groups.
CONSTITUTION: A porous product having excellent water absorption and water retention is obtained by grafting a water-soluble monomer, e.g., acrylic acid or a monomer which, when neutralized or hydrolyzed, becomes water-souble, e.g., methyl methacrylate, onto a partially acetalized porous polyvinyl acetal product obtained by acetalizing PVA with an aldehyde in the presence of a pore-forming agent and an acid, in the presence of a polymerization initiator, e.g., redox type initiator, in a medium such as water or ethanol and then, if necessary, neutralizing or saponifying the product.
EFFECT: The porous product has a high rate of water absorption and a dried porous product recovers flexibility quickly by submerging it in water.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7241980A JPS5910727B2 (en) | 1980-05-29 | 1980-05-29 | Method for manufacturing polyvinyl acetal porous material with excellent water absorption and water retention properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7241980A JPS5910727B2 (en) | 1980-05-29 | 1980-05-29 | Method for manufacturing polyvinyl acetal porous material with excellent water absorption and water retention properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56167713A true JPS56167713A (en) | 1981-12-23 |
| JPS5910727B2 JPS5910727B2 (en) | 1984-03-10 |
Family
ID=13488738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7241980A Expired JPS5910727B2 (en) | 1980-05-29 | 1980-05-29 | Method for manufacturing polyvinyl acetal porous material with excellent water absorption and water retention properties |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910727B2 (en) |
-
1980
- 1980-05-29 JP JP7241980A patent/JPS5910727B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5910727B2 (en) | 1984-03-10 |
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