JPS5693716A - Production of highly water-absorptive acrylic acid polymer - Google Patents

Production of highly water-absorptive acrylic acid polymer

Info

Publication number
JPS5693716A
JPS5693716A JP17235679A JP17235679A JPS5693716A JP S5693716 A JPS5693716 A JP S5693716A JP 17235679 A JP17235679 A JP 17235679A JP 17235679 A JP17235679 A JP 17235679A JP S5693716 A JPS5693716 A JP S5693716A
Authority
JP
Japan
Prior art keywords
acrylic acid
absorptive
water
aqueous solution
reversed phase
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
JP17235679A
Other languages
Japanese (ja)
Other versions
JPS6352662B2 (en
Inventor
Shigeji Obayashi
Morio Nakamura
Koichi Fujiki
Takushi Yamamoto
Hidekazu Araki
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 Seika Chemicals Co Ltd
Original Assignee
Seitetsu Kagaku 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 Seitetsu Kagaku Co Ltd filed Critical Seitetsu Kagaku Co Ltd
Priority to JP17235679A priority Critical patent/JPS5693716A/en
Publication of JPS5693716A publication Critical patent/JPS5693716A/en
Publication of JPS6352662B2 publication Critical patent/JPS6352662B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To produce titled copolymer having excellent stability with lapse of time, by subjecting an aqueous solution of acrylic acid and its alkali salt in a specified mixed solvent to a reversed phase suspension polymerization.
CONSTITUTION: An aqueous solution of acrylic acid and its alkali salt prepared by neutralizing acrylic acid with an alkali so as to obtain a neutralization degree of 50W90mol%, is dispersed in an oleophilic surfactant-containing solvent mixture consisting of 99W90wt% alicyclic hydrocarbon solvent such as cyclohexane or an aliphatic hydrocarbon solvent such as n-hexane, and 1W10wt% aliphatic alcohol such as methyl alcohol. The resulting dispersion is subjected to a reversed phase suspension polymzerization at 20W100°C in the presence of 0.01W0.50mol%, based on monomer, water-soluble radical polymerization initiator such as potassium persulfate.
EFFECT: A water-absorptive resin having an absorptive capacity for physiological saline solution, of 80W90 times the weight of resin can be produced.
COPYRIGHT: (C)1981,JPO&Japio
JP17235679A 1979-12-27 1979-12-27 Production of highly water-absorptive acrylic acid polymer Granted JPS5693716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17235679A JPS5693716A (en) 1979-12-27 1979-12-27 Production of highly water-absorptive acrylic acid polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17235679A JPS5693716A (en) 1979-12-27 1979-12-27 Production of highly water-absorptive acrylic acid polymer

Publications (2)

Publication Number Publication Date
JPS5693716A true JPS5693716A (en) 1981-07-29
JPS6352662B2 JPS6352662B2 (en) 1988-10-19

Family

ID=15940377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17235679A Granted JPS5693716A (en) 1979-12-27 1979-12-27 Production of highly water-absorptive acrylic acid polymer

Country Status (1)

Country Link
JP (1) JPS5693716A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187306A (en) * 1981-05-15 1982-11-18 Sumitomo Chem Co Ltd Production of highly water-absorbing polymer material having high water absorption rate
JPS58117222A (en) * 1981-12-30 1983-07-12 Seitetsu Kagaku Co Ltd Improvement in water absorptivity of water-absorbing resin
JPS59142204A (en) * 1983-02-02 1984-08-15 Ricoh Co Ltd Production of nonaqueous latex containing ultrafine particulate water-soluble resin
FR2602985A1 (en) * 1986-08-19 1988-02-26 Beghin Say Sa Superabsorbent polymers applied to the absorption of blood or protein fluids
US5945495A (en) * 1996-01-19 1999-08-31 Basf Corporation Use of surfactants in the drying of hydrophilic highly swellable hydrogels
JP2002212221A (en) * 2001-01-12 2002-07-31 Nippon Junyaku Kk Manufacturing method of polyacrylic acid polymer
US7196139B2 (en) 2002-12-26 2007-03-27 Nippon Shokubai Co., Ltd. Water-absorbent resin composition
JP2009509722A (en) * 2005-09-30 2009-03-12 株式会社日本触媒 Water-absorbing agent containing water-absorbing resin as main component and method for producing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346389A (en) * 1976-10-07 1978-04-25 Kao Corp Preparation of self-crosslinking polymer of acrylic alkali metal salt

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5346389A (en) * 1976-10-07 1978-04-25 Kao Corp Preparation of self-crosslinking polymer of acrylic alkali metal salt

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187306A (en) * 1981-05-15 1982-11-18 Sumitomo Chem Co Ltd Production of highly water-absorbing polymer material having high water absorption rate
JPH0121164B2 (en) * 1981-05-15 1989-04-20 Sumitomo Chemical Co
JPS58117222A (en) * 1981-12-30 1983-07-12 Seitetsu Kagaku Co Ltd Improvement in water absorptivity of water-absorbing resin
JPS6018690B2 (en) * 1981-12-30 1985-05-11 住友精化株式会社 Method for improving water absorbency of water absorbent resin
JPS59142204A (en) * 1983-02-02 1984-08-15 Ricoh Co Ltd Production of nonaqueous latex containing ultrafine particulate water-soluble resin
FR2602985A1 (en) * 1986-08-19 1988-02-26 Beghin Say Sa Superabsorbent polymers applied to the absorption of blood or protein fluids
US5945495A (en) * 1996-01-19 1999-08-31 Basf Corporation Use of surfactants in the drying of hydrophilic highly swellable hydrogels
JP2002212221A (en) * 2001-01-12 2002-07-31 Nippon Junyaku Kk Manufacturing method of polyacrylic acid polymer
US7196139B2 (en) 2002-12-26 2007-03-27 Nippon Shokubai Co., Ltd. Water-absorbent resin composition
JP2009509722A (en) * 2005-09-30 2009-03-12 株式会社日本触媒 Water-absorbing agent containing water-absorbing resin as main component and method for producing the same
US9309375B2 (en) 2005-09-30 2016-04-12 Nippon Shokubai Co., Ltd. Water-absorbing agent having water-absorbent resin as a main component and production method of the water-absorbing agent

Also Published As

Publication number Publication date
JPS6352662B2 (en) 1988-10-19

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