JPS56141308A - Preparation of reactive self-crosslinking hydrogel - Google Patents

Preparation of reactive self-crosslinking hydrogel

Info

Publication number
JPS56141308A
JPS56141308A JP4526480A JP4526480A JPS56141308A JP S56141308 A JPS56141308 A JP S56141308A JP 4526480 A JP4526480 A JP 4526480A JP 4526480 A JP4526480 A JP 4526480A JP S56141308 A JPS56141308 A JP S56141308A
Authority
JP
Japan
Prior art keywords
acrylate
aqueous solution
meth
alkali metal
hydrocarbon
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
JP4526480A
Other languages
Japanese (ja)
Other versions
JPS646213B2 (en
Inventor
Atsushi Tsutsumi
Nobuaki Koyama
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.)
NHK Spring Co Ltd
Original Assignee
NHK Spring 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 NHK Spring Co Ltd filed Critical NHK Spring Co Ltd
Priority to JP4526480A priority Critical patent/JPS56141308A/en
Publication of JPS56141308A publication Critical patent/JPS56141308A/en
Publication of JPS646213B2 publication Critical patent/JPS646213B2/ja
Granted legal-status Critical Current

Links

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  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: To prepare the titled hydrogel having high water-absorbing capacity and useful as a water-absorbing material, by suspending an aqueous solution of monomers containing a specific amount of an OH-containing (meth)acrylate in a hydrocarbon in the presence of a specific surface active agent, and carrying out the polymerization.
CONSTITUTION: A≥20wt% aqueous solution of (A) an alkali metal acrylate and (B) acrylic acid is suspended in an aromatic hydrocarbon or an aliphatic hydrocarbon in the presence of (C) 1.0W90wt%, based on (A)+(B), of an OH-containing alkyl (meth)acrylate (e.g. 2-hydroxyethyl methacrylate) using a W/O type surface active agent having an HLB value of 3W6 (e.g. sorbitan monostearate), and polymerized in the absence of a crosslinking agent using a radical polymerization initiator.
EFFECT: A low concentration (≥20wt%) aqueous solution of alkali metal acrylate can be used as it is, and an oil-soluble radical polymerization initiator can also be used.
COPYRIGHT: (C)1981,JPO&Japio
JP4526480A 1980-04-08 1980-04-08 Preparation of reactive self-crosslinking hydrogel Granted JPS56141308A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4526480A JPS56141308A (en) 1980-04-08 1980-04-08 Preparation of reactive self-crosslinking hydrogel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4526480A JPS56141308A (en) 1980-04-08 1980-04-08 Preparation of reactive self-crosslinking hydrogel

Publications (2)

Publication Number Publication Date
JPS56141308A true JPS56141308A (en) 1981-11-05
JPS646213B2 JPS646213B2 (en) 1989-02-02

Family

ID=12714431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4526480A Granted JPS56141308A (en) 1980-04-08 1980-04-08 Preparation of reactive self-crosslinking hydrogel

Country Status (1)

Country Link
JP (1) JPS56141308A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268498A2 (en) * 1986-11-20 1988-05-25 Ciba Specialty Chemicals Water Treatments Limited Absorbent products and their manufacture
EP0323243A2 (en) * 1987-12-28 1989-07-05 Nippon Shokubai Co., Ltd. Hydrophilic polymer and method for production thereof
US6565981B1 (en) 1999-03-30 2003-05-20 Stockhausen Gmbh & Co. Kg Polymers that are cross-linkable to form superabsorbent polymers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0268498A2 (en) * 1986-11-20 1988-05-25 Ciba Specialty Chemicals Water Treatments Limited Absorbent products and their manufacture
US4962172A (en) * 1986-11-20 1990-10-09 Allied Colloids Ltd. Absorbent products and their manufacture
EP0323243A2 (en) * 1987-12-28 1989-07-05 Nippon Shokubai Co., Ltd. Hydrophilic polymer and method for production thereof
US5073612A (en) * 1987-12-28 1991-12-17 Nippon Shokubai Kagaku Kogyo, Co., Ltd. Hydrophilic polymer and method for production thereof
US6565981B1 (en) 1999-03-30 2003-05-20 Stockhausen Gmbh & Co. Kg Polymers that are cross-linkable to form superabsorbent polymers

Also Published As

Publication number Publication date
JPS646213B2 (en) 1989-02-02

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