JP2023527468A - 高吸水性樹脂の製造方法 - Google Patents
高吸水性樹脂の製造方法 Download PDFInfo
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Abstract
Description
本出願は、2020年12月2日付韓国特許出願第10-2020-0166858号および2021年11月18日付韓国特許出願第10-2021-0159519号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として組み含まれる。
2)前記含水ゲル重合体を粗粉砕する段階(段階2);
3)前記含水ゲル重合体を乾燥、粉砕および分級してベース樹脂粉末を形成する段階(段階3);および
4)前記ベース樹脂粉末および表面架橋液を反応させて、前記ベース樹脂粉末の表面に相互浸透高分子ネットワークを形成させる段階(段階4)を含み、
前記表面架橋液は、アミノ基を有する単量体および下記化学式1で表される化合物を含む、
高吸水性樹脂の製造方法。
nは1~10の整数である。
前記段階1は、含水ゲル重合体を製造する段階であり、具体的に、少なくとも一部が中和した酸性基を有する水溶性エチレン系不飽和単量体を含む単量体組成物を架橋重合して含水ゲル重合体を形成する段階である。
R1-COOM1
R1は不飽和結合を含む炭素数2~5のアルキル基であり、
M1は水素原子、1価または2価金属、アンモニウム基または有機アミン塩である。
本発明の段階2は、前記段階1で製造した含水ゲル重合体をゲル粉砕する段階である。
本発明の段階3は、前記段階2でゲル粉砕された含水ゲル重合体を乾燥、粉砕および分級してベース樹脂粉末を形成する段階である。
本発明の段階4は、前記段階3で製造したベース樹脂粉末を表面架橋液と反応させて前記ベース樹脂粉末の表面に相互浸透高分子ネットワークを形成させる段階である。
また、本発明は、前述した本発明の製造方法により製造された高吸水性樹脂が提供される。
アクリル酸500gに希釈された0.21% IRGACURE 819開始剤20.5g(80ppm)を混合し、アクリル酸に希釈された10%ポリエチレングリコールジアクリレート(PEGDA、Mw=400)溶液21gを混合した溶液に注入し、ここに2%SDS(Sodium dodecyl sulfate)溶液12gを混合し、24%苛性ソーダ溶液800gを徐々に滴加して混合した。このように得られた水溶性エチレン系不飽和単量体としてアクリル酸ナトリウムでアクリル酸中和度は70モル%になった。
0.1N HCl水溶液(10ml)に、キトサン(0.05g)およびグルタルアルデヒド(0.025mL)を添加して攪拌して、表面架橋液を製造した。
前記実施例1と同様な方法で進行するが、表面架橋液の組成を下記表1のように変更して、高吸水性樹脂を製造した。
前記実施例および比較例で製造した高吸水性樹脂に対して、以下の方法で各物性を測定した。
各樹脂の無荷重下の吸水倍率による保水能をEDANA WSP 241.3により測定した。
CRC(g/g)={[W2(g)-W1(g)]/W0(g)}-1
実施例および比較例を通じてそれぞれ得た樹脂で、#30-50の篩で分級した樹脂を得て、1gを秤量した。秤量された試料を生理食塩水100gに1時間にかけて十分に含浸および膨潤させた。その後、吸収されない溶媒は吸引器(aspirator)を利用して4分間除去し、表面に付着した溶媒は濾過紙に均一に分布させて1回抜き取った。
Claims (12)
- 1)内部架橋剤の存在下で、少なくとも一部が中和した酸性基を有する水溶性エチレン系不飽和単量体を架橋重合して、第1架橋重合体を含む含水ゲル重合体を形成する段階(段階1);
2)前記含水ゲル重合体を粗粉砕する段階(段階2);
3)前記含水ゲル重合体を乾燥、粉砕および分級してベース樹脂粉末を形成する段階(段階3);および
4)前記ベース樹脂粉末および表面架橋液を反応させて、前記ベース樹脂粉末の表面に相互浸透高分子ネットワークを形成させる段階(段階4)を含み、
前記表面架橋液は、アミノ基を有する単量体および下記化学式1で表される化合物を含む、
高吸水性樹脂の製造方法。
nは1~10の整数である。) - 前記表面架橋液の溶媒は、水である、
請求項1に記載の製造方法。 - 前記表面架橋液のpHは、1~3である、
請求項1または2に記載の製造方法。 - 前記アミノ基を有する単量体は、キトサン、またはシクロデキストリンである、
請求項1から3のいずれか一項に記載の製造方法。 - 前記表面架橋液内の前記アミノ基を有する単量体の濃度は、1N~10Nである、
請求項1から4のいずれか一項に記載の製造方法。 - 前記表面架橋液内の前記化学式1で表される化合物の濃度は、1N~10Nである、
請求項1から5のいずれか一項に記載の製造方法。 - 前記表面架橋液内のキトサンおよび前記化学式1で表される化合物の重量比は、1:1~5:1である、
請求項1から6のいずれか一項に記載の製造方法。 - 前記化学式1のnは、2~4の整数である、
請求項1から7のいずれか一項に記載の製造方法。 - 前記化学式1で表される化合物は、グルタルアルデヒドである、
請求項1から8のいずれか一項に記載の製造方法。 - 前記段階4は、20~90℃の温度下で行われる、
請求項1から9のいずれか一項に記載の製造方法。 - 前記高吸水性樹脂のCRCは、30~40g/gである、
請求項1から10のいずれか一項に記載の製造方法。 - 前記高吸水性樹脂のゲル強度は、1.50N~3.00Nである、
請求項1から11のいずれか一項に記載の製造方法。
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KR1020210159519A KR20220077867A (ko) | 2020-12-02 | 2021-11-18 | 고흡수성 수지의 제조 방법 |
KR10-2021-0159519 | 2021-11-18 | ||
PCT/KR2021/017211 WO2022119207A1 (ko) | 2020-12-02 | 2021-11-23 | 고흡수성 수지의 제조 방법 |
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---|---|---|---|---|
US6222091B1 (en) * | 1997-11-19 | 2001-04-24 | Basf Aktiengesellschaft | Multicomponent superabsorbent gel particles |
EP1140229B1 (en) * | 1998-12-16 | 2010-10-06 | Nederlandse Organisatie voor toegepast -natuurwetenschappelijk onderzoek TNO | Acidic superabsorbent polysaccharides |
US6998367B2 (en) * | 2001-12-06 | 2006-02-14 | Kimberly-Clark Worldwide, Inc. | Absorbent composition containing transitional crosslinking points |
JP2004285548A (ja) * | 2003-01-30 | 2004-10-14 | Toyobo Co Ltd | 機能性繊維、その繊維構造物、および吸収性物品 |
KR20070007162A (ko) * | 2004-03-31 | 2007-01-12 | 니폰 쇼쿠바이 컴파니 리미티드 | 수성-액체-흡수제 및 그의 제조 방법 |
KR20120066369A (ko) * | 2010-12-14 | 2012-06-22 | 강원대학교산학협력단 | 글루타알데히드로 가교된 키토산 마이크로겔 및 그 제조방법 |
MX2017006477A (es) * | 2014-11-19 | 2017-09-12 | Perma-Fix Env Services Inc | Preparacion de material compuesto microporoso a base de quitosano y sus aplicaciones. |
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2021
- 2021-11-23 US US18/007,947 patent/US20230272169A1/en active Pending
- 2021-11-23 EP EP21900895.0A patent/EP4137535A4/en active Pending
- 2021-11-23 WO PCT/KR2021/017211 patent/WO2022119207A1/ko unknown
- 2021-11-23 JP JP2022573534A patent/JP2023527468A/ja active Pending
- 2021-11-23 CN CN202180036426.0A patent/CN115698143A/zh active Pending
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US20230272169A1 (en) | 2023-08-31 |
EP4137535A4 (en) | 2024-01-03 |
CN115698143A (zh) | 2023-02-03 |
EP4137535A1 (en) | 2023-02-22 |
WO2022119207A1 (ko) | 2022-06-09 |
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