JPS55147512A - Preparation of high water-absorption hydrogel - Google Patents
Preparation of high water-absorption hydrogelInfo
- Publication number
- JPS55147512A JPS55147512A JP5663779A JP5663779A JPS55147512A JP S55147512 A JPS55147512 A JP S55147512A JP 5663779 A JP5663779 A JP 5663779A JP 5663779 A JP5663779 A JP 5663779A JP S55147512 A JPS55147512 A JP S55147512A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hydrogel
- acrylate
- meth
- soluble
- 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 obtain a hydrogel, of high water-absorption, which is useful for a disposable diaper, tampon, a separating agent for water in oil, a water-retaining agent for soil, etc., by the copolymerization of a water-soluble (meth)acrylate and a water-insoluble ethylenic monomer.
CONSTITUTION: 95W10pts.wt. of a water-soluble (meth)acrylate (e.g., Na salt, K salt) and 5W90pts. wt. of a water-insoluble ethylenic monomer (e,g., methyl acrylate, styrene), are copolymerized, to obtain a hydrogel which absorbs water more than ten times its own weight. The polymerization is preferably carried out by suspending the monomer, a catalyst and, if necessary, a crosslinking agent (e.g., 1,4-divinylbenzene, etc.) in water, and atomizing the suspension into an inert gas at 100W250°C, or distributing it on a moving surface in the form of a film.
EFFECT: It is possible to industrially and easily obtain an innoxious hydrogel, which can be used in water-containing conditions, for a long period of time without putrefaction.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5663779A JPS55147512A (en) | 1979-05-08 | 1979-05-08 | Preparation of high water-absorption hydrogel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5663779A JPS55147512A (en) | 1979-05-08 | 1979-05-08 | Preparation of high water-absorption hydrogel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55147512A true JPS55147512A (en) | 1980-11-17 |
Family
ID=13032835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5663779A Pending JPS55147512A (en) | 1979-05-08 | 1979-05-08 | Preparation of high water-absorption hydrogel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55147512A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6867269B2 (en) | 2001-12-19 | 2005-03-15 | Nippon Shokubai Co., Ltd. | Water-absorbent resin and production process therefor |
US6906159B2 (en) | 2000-08-03 | 2005-06-14 | Nippon Shokubai Co., Ltd. | Water-absorbent resin, hydropolymer, process for producing them, and uses of them |
WO2006024370A1 (en) * | 2004-09-02 | 2006-03-09 | Basf Aktiengesellschaft | Method for producing polymers by dispersion polymerisation |
-
1979
- 1979-05-08 JP JP5663779A patent/JPS55147512A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6906159B2 (en) | 2000-08-03 | 2005-06-14 | Nippon Shokubai Co., Ltd. | Water-absorbent resin, hydropolymer, process for producing them, and uses of them |
US7091253B2 (en) | 2000-08-03 | 2006-08-15 | Nippon Shokubai Co., Ltd. | Water-absorbent resin, hydropolymer, process for producing them, and uses of them |
US7741400B2 (en) | 2000-08-03 | 2010-06-22 | Nippon Shokubai Co., Ltd. | Water-absorbent resin, hydropolymer, process for producing them, and uses of them |
EP2206733A1 (en) | 2000-08-03 | 2010-07-14 | Nippon Shokubai Co., Ltd. | Water-absorbent resin, hydropolymer, process for producing them, and uses of them |
US6867269B2 (en) | 2001-12-19 | 2005-03-15 | Nippon Shokubai Co., Ltd. | Water-absorbent resin and production process therefor |
WO2006024370A1 (en) * | 2004-09-02 | 2006-03-09 | Basf Aktiengesellschaft | Method for producing polymers by dispersion polymerisation |
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