JPS57128709A - Preparation of hydrogel - Google Patents
Preparation of hydrogelInfo
- Publication number
- JPS57128709A JPS57128709A JP1523981A JP1523981A JPS57128709A JP S57128709 A JPS57128709 A JP S57128709A JP 1523981 A JP1523981 A JP 1523981A JP 1523981 A JP1523981 A JP 1523981A JP S57128709 A JPS57128709 A JP S57128709A
- Authority
- JP
- Japan
- Prior art keywords
- hydrogel
- oil
- polymerization
- fat
- reverse 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
Links
Landscapes
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To obtain a granular or spherical hydrogel of high water absorption having a sufficient gel strength, by the reverse phase water-in-oil type suspension polymerization of an α, β-unsaturated acid (alkali metallic salt) with a specific hydrocarbon oil (fat) as an anti-tack agent.
CONSTITUTION: An α, β-unsaturated acid (alkali metallic salt) monomer, e.g. (meth)acrylic acid (Na salt) is subjected to the reverse phase water- in -oil type suspension polymerization in a medium, e.g., n-hexane, with a hydrocarbon oil (fat), e.g. liquid paraffin, cottonseed oil, soybean oil or lard, having a boiling point above the drying temperature of the recovery system of a hydrogel, preferably 50°C or more higher than the drying temperature and a melting point below the separating operation temperature of the hydrogel from the solvent, preferably 20°C or more lower than the separating operation temperature. The anti-tack agent may be added before or during the polymerization or at a suitable time after the completion of the polymerization.
EFFECT: Special pulverizing treatment is not required, and the method is simple and economical.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1523981A JPS57128709A (en) | 1981-02-03 | 1981-02-03 | Preparation of hydrogel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1523981A JPS57128709A (en) | 1981-02-03 | 1981-02-03 | Preparation of hydrogel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57128709A true JPS57128709A (en) | 1982-08-10 |
| JPS6351443B2 JPS6351443B2 (en) | 1988-10-14 |
Family
ID=11883307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1523981A Granted JPS57128709A (en) | 1981-02-03 | 1981-02-03 | Preparation of hydrogel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57128709A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60181108A (en) * | 1984-02-01 | 1985-09-14 | アライド コロイズ リミテイド | Polymer tackifier and manufacture |
| JPS60245608A (en) * | 1984-05-22 | 1985-12-05 | Nippon Kayaku Co Ltd | Production of vinyl polymer |
| EP0755964A3 (en) * | 1995-07-07 | 1997-11-12 | Hoechst Aktiengesellschaft | Hydrophylic, highly swellable hydrogels |
| US7591993B2 (en) | 1998-10-16 | 2009-09-22 | Biosphere Medical, S.A. | Polyvinyl alcohol microspheres, and injectable solutions of the same |
| JPWO2015146603A1 (en) * | 2014-03-26 | 2017-04-13 | 住友精化株式会社 | Method for producing water absorbent resin particles |
| US10265271B2 (en) | 2000-03-24 | 2019-04-23 | Biosphere Medical, Inc. | Microspheres for the treatment of a prostate hyperplasia by active embolization |
| US10293063B2 (en) | 2005-05-09 | 2019-05-21 | Merit Medical Systems, Inc. | Compositions and methods using microspheres and non-ionic contrast agents |
| US10448955B2 (en) | 2006-01-30 | 2019-10-22 | Biosphere Medical, Inc. | Compressible intravascular embolization particles and related methods and delivery systems |
-
1981
- 1981-02-03 JP JP1523981A patent/JPS57128709A/en active Granted
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60181108A (en) * | 1984-02-01 | 1985-09-14 | アライド コロイズ リミテイド | Polymer tackifier and manufacture |
| JPS60245608A (en) * | 1984-05-22 | 1985-12-05 | Nippon Kayaku Co Ltd | Production of vinyl polymer |
| JPH0410886B2 (en) * | 1984-05-22 | 1992-02-26 | ||
| EP0755964A3 (en) * | 1995-07-07 | 1997-11-12 | Hoechst Aktiengesellschaft | Hydrophylic, highly swellable hydrogels |
| US5840321A (en) * | 1995-07-07 | 1998-11-24 | Clariant Gmbh | Hydrophilic, highly swellable hydrogels |
| US7670592B2 (en) | 1998-10-16 | 2010-03-02 | Biosphere Medical, S.A. | Polyvinyl alcohol microspheres, injectable solutions and therapeutic uses of the same |
| US7591993B2 (en) | 1998-10-16 | 2009-09-22 | Biosphere Medical, S.A. | Polyvinyl alcohol microspheres, and injectable solutions of the same |
| US8673266B2 (en) | 1998-10-16 | 2014-03-18 | Biosphere Medical, S.A. | Polyvinyl alcohol microspheres, injectable solutions and therapeutic uses of the same |
| US10265271B2 (en) | 2000-03-24 | 2019-04-23 | Biosphere Medical, Inc. | Microspheres for the treatment of a prostate hyperplasia by active embolization |
| US10293063B2 (en) | 2005-05-09 | 2019-05-21 | Merit Medical Systems, Inc. | Compositions and methods using microspheres and non-ionic contrast agents |
| US10448955B2 (en) | 2006-01-30 | 2019-10-22 | Biosphere Medical, Inc. | Compressible intravascular embolization particles and related methods and delivery systems |
| JPWO2015146603A1 (en) * | 2014-03-26 | 2017-04-13 | 住友精化株式会社 | Method for producing water absorbent resin particles |
| US9745392B2 (en) | 2014-03-26 | 2017-08-29 | Sumitomo Seika Chemicals Co., Ltd. | Method for producing water-absorbent resin particle |
| EP3124502A4 (en) * | 2014-03-26 | 2018-01-03 | Sumitomo Seika Chemicals CO. LTD. | Method for producing water-absorbing resin particle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6351443B2 (en) | 1988-10-14 |
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