JPS5653751A - Porous weakly acidic cation exchange resin and its manufacture - Google Patents
Porous weakly acidic cation exchange resin and its manufactureInfo
- Publication number
- JPS5653751A JPS5653751A JP12974579A JP12974579A JPS5653751A JP S5653751 A JPS5653751 A JP S5653751A JP 12974579 A JP12974579 A JP 12974579A JP 12974579 A JP12974579 A JP 12974579A JP S5653751 A JPS5653751 A JP S5653751A
- Authority
- JP
- Japan
- Prior art keywords
- cross
- cation exchange
- exchange resin
- pva
- surface area
- 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
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE:To manufacture the titled cation exchange resin having medium acidity stronger than that of conventional polyacrylic resin, and having an exchange group of specific structure, by specifying its specific surface area and/or pore volume. CONSTITUTION:PVA is cross-linked by adding a cross-linking agent e.g. glyoxal to the soln. of the PVA in which a salt is dissolved or suspended, then by suspending said soln. or suspension in oil dispersion medium. Then the porous cross-linked PVA, having >=5m<2>/g specific surface area and 0.1ml/g pore volume, obtained by the cross-linking reaction, is reacted with glyoxalic acid in aqueous soln. in the presence of catalyst mineral acid such as sulfuric acid to form acetal using >=0.4mol, preferably 0.9-1.8mol glyoxal per 1mol said cross-linked PVA. After separation of the acetal by conventional method, said reaction medium is washed with water thereby producing liberated weakly acidic cation exchange resin. Said cation exchange resin has an exchange group having structure shown by formula I, and has >=0.5m<2>/g specific surface area and/or >=0.1ml/g pore volume.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12974579A JPS5653751A (en) | 1979-10-08 | 1979-10-08 | Porous weakly acidic cation exchange resin and its manufacture |
US06/174,566 US4306031A (en) | 1979-08-14 | 1980-08-04 | Weakly acidic cation exchange resin and process for producing same |
EP80104794A EP0024055B1 (en) | 1979-08-14 | 1980-08-13 | Weakly acidic cation exchange resins and process for producing same |
DE8080104794T DE3065828D1 (en) | 1979-08-14 | 1980-08-13 | Weakly acidic cation exchange resins and process for producing same |
US06/280,522 US4350773A (en) | 1979-08-14 | 1981-07-06 | Weakly acidic cation exchange resin and process for producing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12974579A JPS5653751A (en) | 1979-10-08 | 1979-10-08 | Porous weakly acidic cation exchange resin and its manufacture |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5653751A true JPS5653751A (en) | 1981-05-13 |
JPS6150016B2 JPS6150016B2 (en) | 1986-11-01 |
Family
ID=15017150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12974579A Granted JPS5653751A (en) | 1979-08-14 | 1979-10-08 | Porous weakly acidic cation exchange resin and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5653751A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109641207A (en) * | 2016-08-31 | 2019-04-16 | 东丽株式会社 | Ion-exchange fibre, water-purifying filter and method for treating water |
WO2019132029A1 (en) * | 2017-12-28 | 2019-07-04 | 株式会社クラレ | Super-absorbent polymer and water-retention material for agriculture |
WO2019132030A1 (en) * | 2017-12-28 | 2019-07-04 | 株式会社クラレ | Water-absorbent resin and agricultural water-retaining material |
JP2019119891A (en) * | 2017-12-28 | 2019-07-22 | 株式会社クラレ | Water-absorbing resin, and agricultural water retention material |
-
1979
- 1979-10-08 JP JP12974579A patent/JPS5653751A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109641207A (en) * | 2016-08-31 | 2019-04-16 | 东丽株式会社 | Ion-exchange fibre, water-purifying filter and method for treating water |
WO2019132029A1 (en) * | 2017-12-28 | 2019-07-04 | 株式会社クラレ | Super-absorbent polymer and water-retention material for agriculture |
WO2019132030A1 (en) * | 2017-12-28 | 2019-07-04 | 株式会社クラレ | Water-absorbent resin and agricultural water-retaining material |
JP2019119891A (en) * | 2017-12-28 | 2019-07-22 | 株式会社クラレ | Water-absorbing resin, and agricultural water retention material |
US11787751B2 (en) | 2017-12-28 | 2023-10-17 | Kuraray Co., Ltd. | Water-absorbent resin and agricultural water-retaining material |
Also Published As
Publication number | Publication date |
---|---|
JPS6150016B2 (en) | 1986-11-01 |
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