JPH11147902A5 - Water-absorbing agent, water-absorbing article, and method for producing water-absorbing resin - Google Patents
Water-absorbing agent, water-absorbing article, and method for producing water-absorbing resinInfo
- Publication number
- JPH11147902A5 JPH11147902A5 JP1997313799A JP31379997A JPH11147902A5 JP H11147902 A5 JPH11147902 A5 JP H11147902A5 JP 1997313799 A JP1997313799 A JP 1997313799A JP 31379997 A JP31379997 A JP 31379997A JP H11147902 A5 JPH11147902 A5 JP H11147902A5
- Authority
- JP
- Japan
- Prior art keywords
- water
- absorbing
- producing
- droplets
- absorbent resin
- 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
Description
【０００１】
【発明の属する技術分野】
本発明は、吸水剤、吸水性物品および吸水性樹脂の製造方法に関する。さらに詳しくは、高濃度条件下で使用されて高荷重がかかった場合にも、十分高い吸収倍率を示すことのできる表面架橋された吸水剤およびそれを用いた吸水性物品と、そのような吸水剤を提供できるような吸水性樹脂の製造方法に関する。
[0001]
[Technical Field to which the Invention Belongs]
The present invention relates to a water-absorbing agent, a water-absorbing article, and a method for producing a water-absorbing resin. More specifically, the present invention relates to a surface-crosslinked water- absorbing agent that can exhibit a sufficiently high absorption capacity even when used under high-concentration conditions and subjected to a high load, a water-absorbing article using the same , and a method for producing a water-absorbing resin that can provide such a water-absorbing agent.
【０００６】
【発明が解決しようとする課題】
したがって、本発明の課題は、高濃度条件下で使用されて高荷重がかかった場合にも、十分高い吸収倍率を示すことのできる表面架橋された吸水剤およびそれを用いた吸水性物品と、そのような吸水剤を提供できるような吸水性樹脂の製造方法を提供することにある。
[0006]
[Problem to be solved by the invention]
Therefore, an object of the present invention is to provide a surface-crosslinked water-absorbing agent that can exhibit a sufficiently high absorption capacity even when used under high-concentration conditions and subjected to a high load , a water-absorbing article using the same, and a method for producing a water-absorbing resin that can provide such a water-absorbing agent .
【０００７】
【課題を解決するための手段】
上記課題を解決するため、本発明は、以下の構成をとる。
(1) アクリル酸またはその塩を主成分とする親水性単量体水溶液を有機溶剤中に分散・懸濁させて液滴状態としたものを逆相懸濁重合して得られた吸水性樹脂の表面近傍を架橋処理してなる吸水剤であって、
気泡が内在されており、平均粒子径２００〜１０００μｍで、角がなく、多孔質であることを特徴とする吸水剤。
(2) 前記(1)記載の吸水剤と繊維質材料を含み、吸水性樹脂と繊維質材料の総和に対する吸水性樹脂の比率が４０重量％以上である吸水性物品。
(3) 親水性単量体水溶液を有機溶剤中に分散・懸濁させて液滴状態としたものを逆相懸濁重合することにより吸水性樹脂を製造する方法において、
前記液滴中に気泡を内在させた状態で逆相懸濁重合を行うことを特徴とする吸水性樹脂の製造方法。
[0007]
[Means for solving the problem]
In order to solve the above problems, the present invention has the following configuration.
(1) A water-absorbing agent obtained by crosslinking the vicinity of the surface of a water-absorbing resin obtained by dispersing and suspending a hydrophilic monomer aqueous solution containing acrylic acid or its salt as a main component in an organic solvent to form droplets, and then subjecting the resulting droplets to reverse-phase suspension polymerization,
The water-absorbing agent has bubbles contained therein, an average particle diameter of 200 to 1000 μm, is cornerless, and is porous.
(2) A water-absorbing article comprising the water-absorbing agent according to (1) above and a fibrous material, wherein the ratio of the water-absorbing resin to the total of the water-absorbing resin and the fibrous material is 40% by weight or more.
( 3 ) A method for producing a water-absorbent resin by dispersing and suspending a hydrophilic monomer aqueous solution in an organic solvent to form droplets, and then subjecting the droplets to reverse-phase suspension polymerization,
A method for producing a water-absorbent resin, characterized in that reversed-phase suspension polymerization is carried out in a state in which air bubbles are contained in the droplets.
(4) 親水性単量体水溶液を有機溶剤中に分散・懸濁させて液滴状態としたものを逆相懸濁重合することにより吸水性樹脂を製造する方法において、
分散剤としてセルロース誘導体を用い、かつ、前記親水性単量体水溶液の粘度が１５ｃｐｓ以上であることを特徴とする吸水性樹脂の製造方法。
( 4 ) A method for producing a water-absorbent resin by dispersing and suspending a hydrophilic monomer aqueous solution in an organic solvent to form droplets, and then subjecting the droplets to reverse-phase suspension polymerization,
A method for producing a water-absorbent resin , characterized in that a cellulose derivative is used as a dispersant, and the viscosity of the aqueous solution of the hydrophilic monomer is 15 cps or more.
Claims (4)
気泡が内在されており、平均粒子径２００〜１０００μｍで、角がなく、多孔質であることを特徴とする吸水剤。The water-absorbing agent has bubbles contained therein, an average particle diameter of 200 to 1000 μm, is cornerless, and is porous.
前記液滴中に気泡を内在させた状態で逆相懸濁重合を行うことを特徴とする吸水性樹脂の製造方法。 A method for producing a water-absorbent resin by dispersing and suspending an aqueous solution of a hydrophilic monomer in an organic solvent to form droplets, and then subjecting the droplets to reverse-phase suspension polymerization, comprising:
A method for producing a water-absorbent resin, characterized in that reversed-phase suspension polymerization is carried out in a state in which air bubbles are contained in the droplets.
分散剤としてセルロース誘導体を用い、かつ、前記親水性単量体水溶液の粘度が１５ｃｐｓ以上であることを特徴とする吸水性樹脂の製造方法。 A method for producing a water-absorbent resin by dispersing and suspending an aqueous solution of a hydrophilic monomer in an organic solvent to form droplets, and then subjecting the droplets to reverse-phase suspension polymerization, comprising:
A method for producing a water-absorbent resin , characterized in that a cellulose derivative is used as a dispersant, and the viscosity of the aqueous solution of the hydrophilic monomer is 15 cps or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31379997A JP3913867B2 (en) | 1997-11-14 | 1997-11-14 | Water absorbing agent and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31379997A JP3913867B2 (en) | 1997-11-14 | 1997-11-14 | Water absorbing agent and method for producing the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH11147902A JPH11147902A (en) | 1999-06-02 |
| JPH11147902A5 true JPH11147902A5 (en) | 2005-05-12 |
| JP3913867B2 JP3913867B2 (en) | 2007-05-09 |
Family
ID=18045670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31379997A Expired - Lifetime JP3913867B2 (en) | 1997-11-14 | 1997-11-14 | Water absorbing agent and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3913867B2 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003105042A (en) * | 2001-09-28 | 2003-04-09 | Nof Corp | Method for producing polycarboxylic acid copolymer and additive for cement |
| BRPI0720482B8 (en) † | 2006-12-22 | 2021-07-27 | Basf Se | process to produce water-absorbent polymeric particles, water-absorbent polymeric particles, use of polymeric particles, and, sanitary article |
| JP2009280668A (en) * | 2008-05-21 | 2009-12-03 | San-Dia Polymer Ltd | Method for producing porous absorbent resin particle |
| WO2010095427A1 (en) * | 2009-02-17 | 2010-08-26 | 株式会社日本触媒 | Polyacrylic acid-based water-absorbing resin powder and method for producing the same |
| US8481159B2 (en) * | 2009-09-04 | 2013-07-09 | Basf Se | Water-absorbent porous polymer particles having specific sphericity and high bulk density |
| WO2011078298A1 (en) | 2009-12-24 | 2011-06-30 | 株式会社日本触媒 | Water-absorbable polyacrylic acid resin powder, and process for production thereof |
| WO2013125279A1 (en) * | 2012-02-20 | 2013-08-29 | 住友精化株式会社 | Method for producing water-absorbing resin particles |
| JP6590800B2 (en) * | 2013-10-30 | 2019-10-16 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Method for producing absorbent polymer particles by suspension polymerization |
| JP6360153B2 (en) | 2014-03-03 | 2018-07-18 | 株式会社日本触媒 | Method for producing polyacrylic acid (salt) water-absorbing resin |
| JP5719079B1 (en) | 2014-07-11 | 2015-05-13 | 住友精化株式会社 | Water absorbent resin and absorbent article |
| KR101871968B1 (en) | 2015-06-01 | 2018-06-27 | 주식회사 엘지화학 | Super absorbent polymer |
| KR101949454B1 (en) | 2015-06-15 | 2019-02-18 | 주식회사 엘지화학 | Super absorbent polymer |
| KR101949995B1 (en) | 2015-07-06 | 2019-02-19 | 주식회사 엘지화학 | Preparation method for super absorbent polymer and super absorbent polymer prepared therefrom |
| KR101855351B1 (en) | 2015-08-13 | 2018-05-04 | 주식회사 엘지화학 | Preparation method for super absorbent polymer |
| WO2017146347A1 (en) | 2016-02-25 | 2017-08-31 | 주식회사 엘지화학 | Superabsorbent polymer and preparation method therefor |
| US11332558B2 (en) * | 2017-03-02 | 2022-05-17 | Sumitomo Seika Chemicals Co., Ltd. | Water-absorbent resin, and soil |
-
1997
- 1997-11-14 JP JP31379997A patent/JP3913867B2/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH11147902A5 (en) | Water-absorbing agent, water-absorbing article, and method for producing water-absorbing resin | |
| JP2574032B2 (en) | Water-absorbing resin particles and method for producing the same | |
| JP4496225B2 (en) | Super absorbent polymer | |
| CN102911381B (en) | Chemical/ionic/physical compounding cross linking hydrogel and preparation method thereof | |
| CA2161902C (en) | Polymer composition, absorbent material composition, their production and use | |
| Zhang et al. | Aerogel microspheres based on cellulose nanofibrils as potential cell culture scaffolds | |
| JPH06506252A (en) | Wrinkled absorbent particles with highly available surface area for fast absorption rate | |
| CA2181698A1 (en) | Absorbent Materials Having Improved Absorbent Property and Methods for Making the Same | |
| CN103437067B (en) | A kind of manufacture method of oil suction fibre felt | |
| SA91110387B1 (en) | Microporous absorbent polymeric microstructures and methods for their fabrication | |
| JPS63254153A (en) | Polymer electrolyte composition | |
| CN108517205A (en) | A kind of low frictional resistance composite Nano proppant and preparation method thereof | |
| CN105064039A (en) | Antibacterial PET/PDA-Ag electrospun composite nanofiber, and preparation method thereof | |
| CN110272894A (en) | A kind of microbe carrier and preparation method thereof of built-in sponge shape porous structure | |
| KR100492917B1 (en) | Process for preparing Bead-typed hydrogel | |
| CN103113513B (en) | Synthetic method for fiber-forming polymer | |
| CN103214604A (en) | Inorganic-organic compound dispersing agent for suspension polymerization and application of inorganic-organic compound dispersing agent | |
| CN113122211A (en) | Nano-starch microsphere oil-gas reservoir protective agent and preparation method thereof | |
| WO1994019377A1 (en) | Suspension polymerized aqueous absorbent polymer particles | |
| US4511477A (en) | Process of using water-absorbent agents for low pH applications | |
| JPH0230336B2 (en) | ||
| CN105524223A (en) | Preparation method for porous PS-DVB microsphere used for immobilized enzyme carrier | |
| US5664363A (en) | Instant rechargeable coating for fishing tackle and method | |
| JPH03137105A (en) | Production of highly adsorptive copolymer | |
| CN109092260A (en) | A kind of petroleum absorption degradation material and preparation method |