JPS56147809A - Highly water absorbing hydrogel and its preparation - Google Patents

Highly water absorbing hydrogel and its preparation

Info

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
Application number
JP5195380A
Other languages
Japanese (ja)
Other versions
JPS6360044B2 (en
Inventor
Yoshiharu Tategami
Masato Ogura
Masayoshi Imai
Shuji Kitamura
Fumio Fujita
Toshihiro Onishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP5195380A priority Critical patent/JPS56147809A/en
Publication of JPS56147809A publication Critical patent/JPS56147809A/en
Publication of JPS6360044B2 publication Critical patent/JPS6360044B2/ja
Granted legal-status Critical Current

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
JP5195380A 1980-04-18 1980-04-18 Highly water absorbing hydrogel and its preparation Granted JPS56147809A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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