JPS56147809A - Highly water absorbing hydrogel and its preparation - Google Patents
Highly water absorbing hydrogel and its preparationInfo
- Publication number
- JPS56147809A JPS56147809A JP5195380A JP5195380A JPS56147809A JP S56147809 A JPS56147809 A JP S56147809A JP 5195380 A JP5195380 A JP 5195380A JP 5195380 A JP5195380 A JP 5195380A JP S56147809 A JPS56147809 A JP S56147809A
- Authority
- JP
- Japan
- Prior art keywords
- water
- acrylic acid
- agent
- meth
- soluble salt
- 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
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To obtain the titled substance, having improved water absorbing property particularly on the alkalin side, and suitable for sanitary articles, by copolymerizing a monomer component consisting of a water-soluble salt of (meth)acrylic acid and methacrylic or acrylic acid in a specific proportion in the presence of a crosslinking agent in an aqueous medium.
CONSTITUTION: A suspension containing (A) a monomer component consisting of a water-soluble salt of (meth)acrylic acid and methacrylic acid or acrylic acid at a weight ratio of 98W10:2W90, preferably 95W40:5W60 in an amount of at least 70wt% or more based on the total comonomer, (B) 0.01W1wt%, preferably 0.01W 0.5wt%, crosslinking agent having two or more reactive groups copolymerizable with the component (A), e.g. ethylene glycol diacrylate, and (C) a catalyst, e.g. ammonium persulfate, is polymerized by spraying in an inert gaseous medium at 100W250°C to give the aimed hydrogel having reversible absorption and release of water with a pH of water and no toxicity.
USE: A separating agent, drying agent, water retaining agent, etc. for water in oil.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5195380A JPS56147809A (en) | 1980-04-18 | 1980-04-18 | Highly water absorbing hydrogel and its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5195380A JPS56147809A (en) | 1980-04-18 | 1980-04-18 | Highly water absorbing hydrogel and its preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56147809A true JPS56147809A (en) | 1981-11-17 |
JPS6360044B2 JPS6360044B2 (en) | 1988-11-22 |
Family
ID=12901229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5195380A Granted JPS56147809A (en) | 1980-04-18 | 1980-04-18 | Highly water absorbing hydrogel and its preparation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56147809A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61228009A (en) * | 1985-03-30 | 1986-10-11 | Agency Of Ind Science & Technol | Production of reversibly stretchable polymer membrane |
JPS63275616A (en) * | 1987-05-06 | 1988-11-14 | Sanyo Chem Ind Ltd | Production of highly water-absorptive composite |
JPH0264106A (en) * | 1988-08-30 | 1990-03-05 | Mitsubishi Petrochem Co Ltd | Production of water-absorbing resin |
US5187235A (en) * | 1986-10-08 | 1993-02-16 | Avery Dennison Corporation | Energy-curable acrylic pressure-sensitive adhesives |
US5380808A (en) * | 1990-07-17 | 1995-01-10 | Sanyo Chemical Industries, Ltd. | Process for producing water-absorbing resins |
US5506324A (en) * | 1992-04-16 | 1996-04-09 | The Dow Chemical Company | Method of preparation of crosslinked hydrophilic resins |
KR19990057609A (en) * | 1997-12-30 | 1999-07-15 | 조정래 | Manufacturing method of super absorbent polymer |
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 |
JP2008527155A (en) * | 2005-01-18 | 2008-07-24 | ビーエーエスエフ ソシエタス・ヨーロピア | Process for producing polymers by spray polymerization |
JP2014240501A (en) * | 2006-07-19 | 2014-12-25 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | Method for producing water-absorbing polymer particle having high permeability by polymerization of droplets of monomer solution |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51136588A (en) * | 1975-05-09 | 1976-11-26 | Nat Starch Chem Corp | Surface treatment for dispersion improvement of hygroscopic composites |
JPS543995A (en) * | 1977-06-09 | 1979-01-12 | Kuroda Precision Ind Ltd | Method of jumping operation of electrospark electrode of electrospark machine |
JPS5439995A (en) * | 1977-02-14 | 1979-03-28 | Stockhausen & Cie Chem Fab | Thickening agent for discharge excrement in container |
JPS55110111A (en) * | 1979-02-19 | 1980-08-25 | Showa Denko Kk | Preparation of highly water-absorbing hydrogel |
JPS55133413A (en) * | 1979-04-06 | 1980-10-17 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of crosslinked alkali metal acrylate polymer |
JPS5684632A (en) * | 1979-12-11 | 1981-07-10 | Nippon Shokubai Kagaku Kogyo Co Ltd | Absorbent |
-
1980
- 1980-04-18 JP JP5195380A patent/JPS56147809A/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51136588A (en) * | 1975-05-09 | 1976-11-26 | Nat Starch Chem Corp | Surface treatment for dispersion improvement of hygroscopic composites |
JPS5439995A (en) * | 1977-02-14 | 1979-03-28 | Stockhausen & Cie Chem Fab | Thickening agent for discharge excrement in container |
JPS543995A (en) * | 1977-06-09 | 1979-01-12 | Kuroda Precision Ind Ltd | Method of jumping operation of electrospark electrode of electrospark machine |
JPS55110111A (en) * | 1979-02-19 | 1980-08-25 | Showa Denko Kk | Preparation of highly water-absorbing hydrogel |
JPS55133413A (en) * | 1979-04-06 | 1980-10-17 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of crosslinked alkali metal acrylate polymer |
JPS5684632A (en) * | 1979-12-11 | 1981-07-10 | Nippon Shokubai Kagaku Kogyo Co Ltd | Absorbent |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61228009A (en) * | 1985-03-30 | 1986-10-11 | Agency Of Ind Science & Technol | Production of reversibly stretchable polymer membrane |
US5187235A (en) * | 1986-10-08 | 1993-02-16 | Avery Dennison Corporation | Energy-curable acrylic pressure-sensitive adhesives |
JPS63275616A (en) * | 1987-05-06 | 1988-11-14 | Sanyo Chem Ind Ltd | Production of highly water-absorptive composite |
JPH0264106A (en) * | 1988-08-30 | 1990-03-05 | Mitsubishi Petrochem Co Ltd | Production of water-absorbing resin |
US5380808A (en) * | 1990-07-17 | 1995-01-10 | Sanyo Chemical Industries, Ltd. | Process for producing water-absorbing resins |
US5506324A (en) * | 1992-04-16 | 1996-04-09 | The Dow Chemical Company | Method of preparation of crosslinked hydrophilic resins |
KR19990057609A (en) * | 1997-12-30 | 1999-07-15 | 조정래 | Manufacturing method of super absorbent polymer |
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 |
JP2008527155A (en) * | 2005-01-18 | 2008-07-24 | ビーエーエスエフ ソシエタス・ヨーロピア | Process for producing polymers by spray polymerization |
JP2014240501A (en) * | 2006-07-19 | 2014-12-25 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | Method for producing water-absorbing polymer particle having high permeability by polymerization of droplets of monomer solution |
Also Published As
Publication number | Publication date |
---|---|
JPS6360044B2 (en) | 1988-11-22 |
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