JPS57198714A - Production of hydrogel - Google Patents
Production of hydrogelInfo
- Publication number
- JPS57198714A JPS57198714A JP8331781A JP8331781A JPS57198714A JP S57198714 A JPS57198714 A JP S57198714A JP 8331781 A JP8331781 A JP 8331781A JP 8331781 A JP8331781 A JP 8331781A JP S57198714 A JPS57198714 A JP S57198714A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hydrogel
- organic solvent
- unsaturated carboxylic
- carboxylic acid
- 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)
- Polymerisation Methods In General (AREA)
Abstract
PURPOSE: After the reverse-phase suspension polymerization of unsaturated carboxylic acid, water is removed from the resultant polymer slurry by azeotripic distillation with an organic solvent to produce granular hydrogel of a specific water content scarcely showing tackiness.
CONSTITUTION: The water-in-oil type reverse-phase polymerization of (A) an α,β- unsaturated carboxylic acid/or its alkali metal salt, preferably acrylic acid is carried out in the presence of (B) a dispersing agent and a crosslinking agent such as ethylene glycol, then water is removed from the polymer slurry by azeotropic distillation with (C) an organic solvent, preferably hexane until the water content comes down to 10W43wt%. Further, the remaining water is removed by drying to give the objective hydrogel.
EFFECT: The stages of the production process are reduced to increase its productivity and permit the economical production of the hydrogel.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8331781A JPS57198714A (en) | 1981-05-29 | 1981-05-29 | Production of hydrogel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8331781A JPS57198714A (en) | 1981-05-29 | 1981-05-29 | Production of hydrogel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57198714A true JPS57198714A (en) | 1982-12-06 |
| JPS6411049B2 JPS6411049B2 (en) | 1989-02-23 |
Family
ID=13799041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8331781A Granted JPS57198714A (en) | 1981-05-29 | 1981-05-29 | Production of hydrogel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57198714A (en) |
Cited By (71)
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|---|---|---|---|---|
| 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 |
| US4985514A (en) * | 1987-08-10 | 1991-01-15 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Method for production of water absorbent resin |
| US5275773A (en) * | 1991-02-01 | 1994-01-04 | Nippon Shokubai Co., Ltd. | Method for production of particulate hydrated gel polymer and absorbent resin |
| EP0604153A1 (en) * | 1992-12-21 | 1994-06-29 | Calgon Corporation | Process for preparing novel high solids non-aqueous polymer compositions |
| EP0604152A1 (en) * | 1992-12-21 | 1994-06-29 | Calgon Corporation | Process for preparing novel high solids non-aqueous polymer compositions |
| EP0672705A3 (en) * | 1994-03-16 | 1995-11-29 | Calgon Corp | Stable high-solids polymer compositions and processes for their production. |
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| WO2011090130A1 (en) | 2010-01-20 | 2011-07-28 | 株式会社日本触媒 | Method for producing water absorbent resin |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56161408A (en) * | 1980-05-19 | 1981-12-11 | Kao Corp | Production of water-absorbing resin |
-
1981
- 1981-05-29 JP JP8331781A patent/JPS57198714A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56161408A (en) * | 1980-05-19 | 1981-12-11 | Kao Corp | Production of water-absorbing resin |
Cited By (102)
| 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 |
| US4985514A (en) * | 1987-08-10 | 1991-01-15 | Nippon Shokubai Kagaku Kogyo Co., Ltd. | Method for production of water absorbent resin |
| US5275773A (en) * | 1991-02-01 | 1994-01-04 | Nippon Shokubai Co., Ltd. | Method for production of particulate hydrated gel polymer and absorbent resin |
| EP0604153A1 (en) * | 1992-12-21 | 1994-06-29 | Calgon Corporation | Process for preparing novel high solids non-aqueous polymer compositions |
| EP0604152A1 (en) * | 1992-12-21 | 1994-06-29 | Calgon Corporation | Process for preparing novel high solids non-aqueous polymer compositions |
| US5480921A (en) * | 1992-12-21 | 1996-01-02 | Calgon Corporation | Process for preparing novel high solids non-aqueous polymer compositions |
| EP0672705A3 (en) * | 1994-03-16 | 1995-11-29 | Calgon Corp | Stable high-solids polymer compositions and processes for their production. |
| WO2011007974A2 (en) | 2009-07-15 | 2011-01-20 | 주식회사 엘지화학 | Method for preparing a superabsorbent polymer |
| US8623994B2 (en) | 2010-01-20 | 2014-01-07 | Nippon Shokubai, Co., Ltd. | Method for producing water absorbent resin |
| WO2011090129A1 (en) | 2010-01-20 | 2011-07-28 | 株式会社日本触媒 | Method for producing water absorbent resin |
| WO2011090130A1 (en) | 2010-01-20 | 2011-07-28 | 株式会社日本触媒 | Method for producing water absorbent resin |
| US9321855B2 (en) | 2010-01-20 | 2016-04-26 | Nippon Shokubai Co., Ltd. | Method for producing water absorbent resin |
| WO2011149313A2 (en) | 2010-05-28 | 2011-12-01 | 주식회사 엘지화학 | Crushing apparatus for a superabsorbent polymer, and method for producing a superabsorbent polymer using same |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPS6411049B2 (en) | 1989-02-23 |
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