JP7335051B2 - 高吸水性樹脂の製造方法 - Google Patents
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- C08J3/247—Heating methods
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- C08F2810/00—Chemical modification of a polymer
- C08F2810/20—Chemical modification of a polymer leading to a crosslinking, either explicitly or inherently
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- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
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- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2333/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
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Description
本出願は、2019年10月7日付韓国特許出願第10-2019-0123772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。
アクリル酸100重量部、31.5%苛性ソーダ(NaOH)126.8重量部、水46重量部、下記の成分を混合してモノマー組成物を製造した。
-重合開始剤:ビス(2,4,6-トリメチルベンゾイル)フェニルホスフィンオキシド(光開始剤)0.008重量部(80ppmw)および過硫酸ナトリウム(光開始剤)0.12重量部(1200ppmw)
実施例1
前記で製造されたベース樹脂に対して、標準ふるいを利用して、次のような粒度分布を有するベース樹脂を準備した。
前記で製造されたベース樹脂に対して、標準ふるいを利用して、次のような粒度分布を有するベース樹脂を準備した。
前記で得られたベース樹脂100重量部に対して、水約3.2重量部、メタノール約4.5重量部、エチレングリコール約0.132重量部の比率で混合して、表面架橋液を準備した。
前記で得られたベース樹脂100重量部に対して、水約5.4重量部、エチレンカーボネートおよびプロピレンカーボネート(ECPC)約1.8重量部、プロピレングリコール約0.58重量部の比率で混合して、表面架橋液を準備した。
前記で得られたベース樹脂100重量部に対して、水約3.2重量部、メタノール約4.5重量部、エチレングリコール約0.132重量部の比率で混合して、表面架橋液を準備した。
前記で得られたベース樹脂100重量部に対して、水約3.2重量部、メタノール約4.5重量部、エチレングリコール約0.132重量部の比率で混合して、表面架橋液を準備した。
前記で製造されたベース樹脂に対して、標準ふるいを利用して、次のような粒度分布を有するベース樹脂を準備した。
前記で製造されたベース樹脂に対して、標準ふるいを利用して、次のような粒度分布を有するベース樹脂を準備した。
前記で得られた表面処理された高吸水性樹脂に対して、下記方法により吸水関連諸般物性を測定した。
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
各樹脂の0.7psi加圧下吸水能を、EDANA法WSP242.3により測定した。
AUP(g/g)=[W4(g)-W3(g)]/W0(g)
実施例および比較例で製造した高吸水性樹脂2g(W5)を直径9cmのペトリ皿に均一に塗布した後、温度40±3℃、湿度80±3%水準を維持する恒温恒湿チャンバー内で10分間維持させた後、フィルターペーパーにフラスコ皿をひっくり返して3回テーピング(tapping)後、高吸水性樹脂が落ちる量(W6)を測定した。
ケーキング防止効率(%)=[W6(g)/W5(g)]×100
Claims (7)
- 重合開始剤および内部架橋剤の存在下で、少なくとも一部が中和され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、含水ゲル重合体を形成する段階;
前記含水ゲル重合体を乾燥、粉砕、および分級して、ベース樹脂粉末を得る段階;
表面架橋液の存在下で、170℃以下の温度で前記ベース樹脂粉末を表面架橋して高吸水性樹脂粒子を形成する段階を含み、
前記表面架橋は、初期温度から第1温度に昇温させながら進行される第1表面架橋、および第1温度から第2温度に降温させながら進行される第2表面架橋を含み、
前記第1温度は前記初期温度より高く、前記第2温度は前記第1温度より低く、
前記第2温度は、160℃以上、165℃未満である、
高吸水性樹脂の製造方法。 - 前記第1温度は、165℃以上、170℃以下である、請求項1に記載の高吸水性樹脂の製造方法。
- 前記第1および第2表面架橋は、それぞれ独立して、10~60分間進行される、請求項1に記載の高吸水性樹脂の製造方法。
- 前記表面架橋液は、非エポキシ系表面架橋剤を含む、請求項1に記載の高吸水性樹脂の製造方法。
- 前記表面架橋液は、多価アルコール化合物、ポリアミン化合物、オキサゾリン化合物;モノ-、ジ-またはポリオキサゾリジノン化合物、環状ウレア化合物、多価金属塩、およびアルキレンカーボネート化合物からなる群より選択される1種以上を含む、
請求項1に記載の高吸水性樹脂の製造方法。 - 表面架橋剤は、前記ベース樹脂粉末100重量部に対して0.5~10重量部で使用される、請求項1に記載の高吸水性樹脂の製造方法。
- 前記第2表面架橋の後、前記第2温度で定温進行される第3表面架橋をさらに含む、請求項1に記載の高吸水性樹脂の製造方法。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2019-0123772 | 2019-10-07 | ||
| KR20190123772 | 2019-10-07 | ||
| PCT/KR2020/013661 WO2021071246A1 (ko) | 2019-10-07 | 2020-10-07 | 고흡수성 수지의 제조 방법 |
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| JP2022540490A JP2022540490A (ja) | 2022-09-15 |
| JP7335051B2 true JP7335051B2 (ja) | 2023-08-29 |
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|---|---|
| US (1) | US12453957B2 (ja) |
| EP (1) | EP3981827A4 (ja) |
| JP (1) | JP7335051B2 (ja) |
| KR (1) | KR20210041516A (ja) |
| CN (1) | CN114174389B (ja) |
| WO (1) | WO2021071246A1 (ja) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111971761B (zh) * | 2018-03-29 | 2025-01-14 | 新东工业株式会社 | 铁基软磁性粉末及其制造方法、以及包含铁基软磁性合金粉末的物品及其制造方法 |
| EP4249539A4 (en) * | 2021-09-09 | 2024-06-26 | Lg Chem, Ltd. | METHOD FOR PRODUCING A SUPERABSORBENT POLYMER |
| KR102582622B1 (ko) | 2023-07-20 | 2023-09-22 | 황진웅 | 당구공 두께 타격 연습장치 |
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- 2020-10-07 WO PCT/KR2020/013661 patent/WO2021071246A1/ko not_active Ceased
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| JP2009534482A (ja) | 2006-04-21 | 2009-09-24 | エフォニック ストックハウゼン ゲーエムベーハー | 透過率と圧力下吸収率が改善された吸水性ポリマー構造体 |
| JP2010504211A (ja) | 2006-09-25 | 2010-02-12 | ビーエーエスエフ ソシエタス・ヨーロピア | 吸水性ポリマー粒子の分級法 |
| JP2015526572A (ja) | 2012-08-29 | 2015-09-10 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | 吸水性ポリマー粒子の製造方法 |
| WO2015046992A1 (ko) | 2013-09-30 | 2015-04-02 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 |
| WO2017170501A1 (ja) | 2016-03-28 | 2017-10-05 | 株式会社日本触媒 | 吸水剤およびその製造方法、並びに吸水剤を用いた吸収性物品 |
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| Publication number | Publication date |
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| BR112022002174A2 (pt) | 2022-06-07 |
| WO2021071246A1 (ko) | 2021-04-15 |
| US12453957B2 (en) | 2025-10-28 |
| EP3981827A1 (en) | 2022-04-13 |
| KR20210041516A (ko) | 2021-04-15 |
| JP2022540490A (ja) | 2022-09-15 |
| CN114174389A (zh) | 2022-03-11 |
| CN114174389B (zh) | 2024-02-27 |
| US20220234027A1 (en) | 2022-07-28 |
| EP3981827A4 (en) | 2022-08-10 |
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