JPS57167304A - Production of water-absorbing resin - Google Patents
Production of water-absorbing resinInfo
- Publication number
- JPS57167304A JPS57167304A JP5303981A JP5303981A JPS57167304A JP S57167304 A JPS57167304 A JP S57167304A JP 5303981 A JP5303981 A JP 5303981A JP 5303981 A JP5303981 A JP 5303981A JP S57167304 A JPS57167304 A JP S57167304A
- Authority
- JP
- Japan
- Prior art keywords
- water
- polymer
- carboxylic acid
- unsaturated carboxylic
- monoethylenically unsaturated
- 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.)
- Pending
Links
Abstract
PURPOSE: To produce the titled resin which rapidly absorbs water and has excellent water retention, by polymerizing a monoethylenically unsaturated carboxylic acid (lower alkyl ester) with a specified monomer and saponifying, drying and grinding the polymer.
CONSTITUTION: A polymer is obtained by subjecting (A) 100pts.wt. monoethylenically unsaturated carboxylic acid or its lower alkyl ester (e.g., methyl acrylate) and (B) 10W100pts.wt. water-soluble monomer selected from monoethylenically unsaturated carboxylic acid esters of polyhydric alcohols[e.g., hydroxyethy(meth)acrylate]to an aqueous dispersion polymerization in the absence of an emulsifier and in the presence of a water-soluble polymerization initiator. Then, this polymer is saponified with a basic substance (e.g., NaOH) in an amount equimolar or slightly excess to component A, washed with acetone and water, vacuum-dried and ground.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5303981A JPS57167304A (en) | 1981-04-10 | 1981-04-10 | Production of water-absorbing resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5303981A JPS57167304A (en) | 1981-04-10 | 1981-04-10 | Production of water-absorbing resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57167304A true JPS57167304A (en) | 1982-10-15 |
Family
ID=12931740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5303981A Pending JPS57167304A (en) | 1981-04-10 | 1981-04-10 | Production of water-absorbing resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57167304A (en) |
-
1981
- 1981-04-10 JP JP5303981A patent/JPS57167304A/en active Pending
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