JP2001220415A5 - - Google Patents
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- JP2001220415A5 JP2001220415A5 JP2000352440A JP2000352440A JP2001220415A5 JP 2001220415 A5 JP2001220415 A5 JP 2001220415A5 JP 2000352440 A JP2000352440 A JP 2000352440A JP 2000352440 A JP2000352440 A JP 2000352440A JP 2001220415 A5 JP2001220415 A5 JP 2001220415A5
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- water
- group
- soluble
- physiological saline
- absorbent resin
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【特許請求の範囲】
【請求項1】 水溶性及び/又は加水分解により水溶性となる1種以上のラジカル重合性単量体(a)と重量平均分子量1000未満の架橋剤(b)を、水存在下でラジカル重合させて吸水性樹脂を製造する方法において、共重合性二重結合を分子内に2個以上有する重量平均分子量1000〜30万の水溶性若しくは水分散性若しくは水膨潤性若しくは吸水性の親水性樹脂(c)を共存させて重合を行うことを特徴とする吸水性樹脂(A1)の製造法。
【請求項2】 (c)が、水溶性のラジカル重合性単量体及び/若しくは加水分解により水溶性となるラジカル重合性単量体を重合して得た樹脂に二重結合及び官能性基を有する化合物を反応して二重結合を導入する方法により得られるものである請求項1記載の製造法。
【請求項3】 前記二重結合及び官能性基を有する化合物が、スルホン酸(塩)基、カルボン酸(塩)基、水酸基、エポキシ基、カルボン酸無水物基、アミノ基からなる群から選ばれる官能性基と二重結合を含有する化合物の1種以上である請求項2記載の製造法。
【請求項4】 (c)の量が(a)に対して5〜50質量%である請求項1〜3のいずれか記載の製造法。
【請求項5】 請求項1〜4のいずれか記載の製造法で得られる粒子状の吸水性樹脂(A1)を、架橋剤(d)でさらに表面架橋する吸水性樹脂(A2)の製造法。
【請求項6】 請求項1〜5の何れか記載の製造法により得られ(1)生理食塩水に対する保水量が28g/g以上、(2)生理食塩水による3時間抽出後の水可溶性成分量が15%以下である吸水性樹脂。
【請求項7】 請求項5記載の製造法により得られ(1)生理食塩水に対する保水量が30g/g以上、(2)20g/cm2荷重下における生理食塩水に対する吸収量が25g/g以上、(3)40g/cm2荷重下における生理食塩水に対する吸収量が20g/g以上、(4)60g/cm2荷重下における生理食塩水に対する吸収量が15g/g以上、(5)生理食塩水による3時間抽出後の水可溶性成分量が12%以下である吸水性樹脂。
【請求項8】 請求項6又は7に記載の吸水性樹脂からなる衛生材料。
[Claims]
1. Radical polymerization of one or more radically polymerizable monomers (a) which become water-soluble and / or water-soluble by hydrolysis and a crosslinking agent (b) having a weight average molecular weight of less than 1,000 in the presence of water. A water-soluble or water-dispersible or water-swellable or water-absorbing hydrophilic resin having a weight average molecular weight of 1,000 to 300,000 having two or more copolymerizable double bonds in a molecule thereof. A method for producing a water-absorbent resin (A1), wherein polymerization is carried out in the presence of (c).
2. A resin obtained by polymerizing a water-soluble radically polymerizable monomer and / or a water-soluble radically polymerizable monomer by hydrolysis to give a double bond and a functional group to the resin. The method according to claim 1, which is obtained by a method of introducing a double bond by reacting a compound having the following formula:
3. The compound having a double bond and a functional group is selected from the group consisting of a sulfonic acid (salt) group, a carboxylic acid (salt) group, a hydroxyl group, an epoxy group, a carboxylic anhydride group, and an amino group. 3. The method according to claim 2, wherein the compound is at least one compound having a functional group and a double bond.
4. The process according to claim 1, wherein the amount of (c) is 5 to 50% by mass based on (a).
5. A method for producing a water-absorbent resin (A2) in which the particulate water-absorbent resin (A1) obtained by the production method according to claim 1 is further surface-crosslinked with a crosslinking agent (d). .
6. A water-soluble component obtained by the production method according to any one of claims 1 to 5, wherein (1) a water retention capacity with respect to physiological saline is 28 g / g or more, and (2) a three-hour extraction with physiological saline. A water-absorbent resin having an amount of 15% or less.
7. The method according to claim 5, wherein (1) the amount of water retained in physiological saline is 30 g / g or more, and (2) the amount of absorption in physiological saline under a load of 20 g / cm 2 is 25 g / g or more. (3) Absorption amount to physiological saline under a load of 40 g / cm 2 is 20 g / g or more; (4) Absorption amount to physiological saline under a load of 60 g / cm 2 is 15 g / g or more; A water-absorbent resin having a water-soluble component content of 12% or less after extraction for 3 hours.
8. A sanitary material comprising the water-absorbent resin according to claim 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000352440A JP4550256B2 (en) | 1999-11-19 | 2000-11-20 | Manufacturing method of water absorbent resin |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32899399 | 1999-11-19 | ||
JP11-328993 | 1999-11-19 | ||
JP2000352440A JP4550256B2 (en) | 1999-11-19 | 2000-11-20 | Manufacturing method of water absorbent resin |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2001220415A JP2001220415A (en) | 2001-08-14 |
JP2001220415A5 true JP2001220415A5 (en) | 2007-06-21 |
JP4550256B2 JP4550256B2 (en) | 2010-09-22 |
Family
ID=26573043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000352440A Expired - Fee Related JP4550256B2 (en) | 1999-11-19 | 2000-11-20 | Manufacturing method of water absorbent resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4550256B2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1637105A4 (en) * | 2003-06-13 | 2009-03-25 | Sumitomo Seika Chemicals | Absorbing material and absorptive article using the same |
DE602005024099D1 (en) | 2004-01-28 | 2010-11-25 | Dainippon Ink & Chemicals | METHOD FOR PRODUCING A CORE-SHELL RESIN PARTICLE WITH HIGH LIQUID ABSORPTION |
JP2006169284A (en) * | 2004-12-13 | 2006-06-29 | Dainippon Ink & Chem Inc | Absorbent and blood absorbent article |
DE102006060156A1 (en) * | 2006-12-18 | 2008-06-19 | Evonik Stockhausen Gmbh | Water-absorbing polymer structures produced using polymer dispersions |
JP5405177B2 (en) * | 2009-03-31 | 2014-02-05 | 三洋化成工業株式会社 | Disposable warmer for warmers |
JP5863673B2 (en) * | 2011-01-06 | 2016-02-17 | 株式会社カネカ | Method for producing acrylic acrylate resin |
KR20140134219A (en) | 2013-05-13 | 2014-11-21 | 주식회사 엘지화학 | Super absorbent polymer and preparation method of the same |
KR101745679B1 (en) * | 2014-11-27 | 2017-06-09 | 주식회사 엘지화학 | Preparation method of super absorbent polymer and super absorbent polymer prepared therefrom |
KR101772658B1 (en) * | 2014-12-18 | 2017-08-29 | 주식회사 엘지화학 | Superabsorbent Polymers for Blood and Viscous Liquids And Method Of Preparing The Same |
JP5966031B2 (en) * | 2015-02-24 | 2016-08-10 | 住友精化株式会社 | Water-absorbing resin and method for producing the same |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0678396B2 (en) * | 1986-05-21 | 1994-10-05 | 日本純薬株式会社 | Method for producing water-soluble acrylic copolymer |
DE3713601A1 (en) * | 1987-04-23 | 1988-11-10 | Stockhausen Chem Fab Gmbh | METHOD FOR PRODUCING A STRONG WATER-ABSORBENT POLYMER |
JP2802092B2 (en) * | 1989-03-28 | 1998-09-21 | 株式会社日本触媒 | Water-absorbing agent with excellent salt resistance |
DE19543368C2 (en) * | 1995-11-21 | 1998-11-26 | Stockhausen Chem Fab Gmbh | Water-absorbing polymers with improved properties, processes for their production and their use |
-
2000
- 2000-11-20 JP JP2000352440A patent/JP4550256B2/en not_active Expired - Fee Related
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