JP7450603B2 - 超吸収体の製造方法 - Google Patents
超吸収体の製造方法 Download PDFInfo
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- JP7450603B2 JP7450603B2 JP2021509163A JP2021509163A JP7450603B2 JP 7450603 B2 JP7450603 B2 JP 7450603B2 JP 2021509163 A JP2021509163 A JP 2021509163A JP 2021509163 A JP2021509163 A JP 2021509163A JP 7450603 B2 JP7450603 B2 JP 7450603B2
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- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002195 soluble material Substances 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 229960000984 tocofersolan Drugs 0.000 description 1
- AOBORMOPSGHCAX-DGHZZKTQSA-N tocofersolan Chemical compound OCCOC(=O)CCC(=O)OC1=C(C)C(C)=C2O[C@](CCC[C@H](C)CCC[C@H](C)CCCC(C)C)(C)CCC2=C1C AOBORMOPSGHCAX-DGHZZKTQSA-N 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 235000004835 α-tocopherol Nutrition 0.000 description 1
- 239000002076 α-tocopherol Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0069—Post treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
- B01J13/0065—Preparation of gels containing an organic phase
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/01—Processes of polymerisation characterised by special features of the polymerisation apparatus used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
Description
a)酸基を有し、50~85mol%程度まで中和されている、少なくとも1種のエチレン性不飽和モノマー、
b)少なくとも1種の架橋剤、
c)少なくとも1種の開始剤、
d)任意選択で、a)に記載されるモノマーと共重合可能な1種以上のエチレン性不飽和モノマー、及び
e)任意選択で、1種以上の水溶性ポリマー
を含むモノマー溶液を重合させることによって超吸収体を製造する方法であって、
i)ベルト反応器の連続ベルト上でモノマー溶液を連続的に重合させるステップ、
ii)ステップi)で得られたポリマーゲルを粉砕するステップ、
iii)ベルト反応器の下側で得られたポリマーゲルを分離ユニット中へと水でリンスするステップ、
iv)分離ユニット中でポリマーゲルを水から分離するステップ、及び
v)ステップiv)において分離したポリマーゲルをステップii)へと再循環させるステップ
を含み、
前記ポリマーゲルが、少なくとも100g/gの水中での膨潤能を有し、ステップiii)とステップiv)との間の滞留時間が、20分未満であり、ステップiv)における分離ユニットが、少なくとも1mmの開口幅を有する開口部を備える、
方法によって達成された。
本明細書においてこれ以降記載され、且つ「WSP」と指定された標準試験方法は、Worldwide Strategic Partners EDANA (Avenue Eugene Plasky、157、1030、ブラッセル、ベルギー、www.edana.org)とINDA (1100 Crescent Green、Suite 115、Cary、ノースカロライナ27518、米国、www.inda.org)とによって共同刊行されている「Standard Test Methods for the Nonwovens Industry」、2005年版に記載されている。この刊行物は、EDANAとINDAとの両方から得ることができる。
固体含有量(SC)を決定するために、ポリマーゲルは、乾燥キャビネット中180℃にて少なくとも3時間乾燥させる(一定の質量まで)。固体含有量は、乾燥したポリマーゲルを出発重量で割った重量である。
水中自由膨潤能(FSCDIW)は、EDANA推奨試験方法No. WSP 240.2-05「Free Swell Capacity in Saline, Gravimetric Determination」と同様に、ポリマーゲルを測定前に乾燥させ、それを粉砕し、それを150μm~850μmの範囲の粒子サイズへと篩い、0.9重量%の生理食塩水溶液中ではなく脱塩水中で測定を行うことによって決定される。ティーバッグは、膨潤能がより大きい場合、相応に大きくするべきである。
37.3重量%のアクリル酸ナトリウム水溶液1028g、アクリル酸98g、水254g及び3回エトキシ化されたグリセロールトリアクリレート0.30gを、2000ml金属ビーカー中に秤取した。中和レベルは75mol%であった。金属ビーカーをParafilm(商標登録)で封じ、窒素150l/時で不活性化した。不活性化の間、モノマー溶液を3℃に冷却した。続いて、10重量%の過硫酸ナトリウムの水溶液6.47g及び1重量%の過酸化水素の水溶液5.88gを連続して添加した。
37.3重量%の水性アクリル酸ナトリウム溶液950g、アクリル酸146g、水335g及び3回エトキシ化されたグリセロールトリアクリレート0.63gを、2000ml金属ビーカー中に量り入れた。中和レベルは65mol%であった。金属ビーカーをParafilm(商標登録)で封じ、窒素150l/時で不活性化した。不活性化の間、モノマー溶液を3℃に冷却した。続いて、10重量%の過硫酸ナトリウムの水溶液6.47g及び1重量%の過酸化水素の水溶液5.88gを連続して添加した。
各実験について、使用した湿潤ポリマーゲルの量を前もって秤量し、ポリマーゲルの固体含有量(SC)を測定した。
Claims (15)
- a)酸基を有し、50~85mol%程度まで中和されている、少なくとも1種のエチレン性不飽和モノマー、
b)少なくとも1種の架橋剤、
c)少なくとも1種の開始剤、
d)任意選択で、a)に記載されるモノマーと共重合可能な1種以上のエチレン性不飽和モノマー、及び
e)任意選択で、1種以上の水溶性ポリマー
を含むモノマー溶液を重合させることによって超吸収体粒子を製造する方法であって、
i)ベルト反応器の連続ベルト上でモノマー溶液を連続的に重合させるステップ、
ii)ステップi)で得られたポリマーゲルを粉砕するステップ、
iii)ベルト反応器の連続ベルトの下側に付着しているポリマーゲルを分離ユニットの中へ水でリンスするステップ、
iv)分離ユニット中でポリマーゲルを水から分離するステップ、及び
v)ステップiv)において分離したポリマーゲルをステップii)へと再循環させるステップ
を含み、
ポリマーゲルが、少なくとも100g/gの水中での膨潤能を有し、ステップiii)とステップiv)との間の滞留時間が、20分未満であり(ここで、滞留時間とは、ポリマーゲル粒子のリンス水と最初の接触と、ポリマーゲル粒子の分離ユニット中への流入とのあいだの時間である)、ステップiv)における分離ユニットが、少なくとも1mmの開口幅を有する開口部を備える、
方法。 - ステップiii)とステップiv)との間の滞留時間が、15分未満である、請求項1に記載の方法。
- ステップiii)とステップiv)との間の滞留時間が、10分未満である、請求項1又は2に記載の方法。
- ステップiii)とステップiv)との間の滞留時間が、5分未満である、請求項1から3のいずれか一項に記載の方法。
- ベルト反応器の下側で得られたポリマーゲルが、タンク内に収集される、請求項1から4のいずれか一項に記載の方法。
- ステップiv)における分離ユニットが、少なくとも1.5mmの開口幅を有する開口部を備える、請求項1から5のいずれか一項に記載の方法。
- ステップiv)における分離ユニットが、少なくとも2mmの開口幅を有する開口部を備える、請求項1から6のいずれか一項に記載の方法。
- ステップiv)における分離ユニットが、少なくとも3mmの開口幅を有する開口部を備える、請求項1から7のいずれか一項に記載の方法。
- ステップiv)における分離ユニット中の開口部が、スクリーンのメッシュからなる、請求項1から8のいずれか一項に記載の方法。
- ステップiv)における分離ユニット中の開口部が、スロットの形態をとる、請求項1から8のいずれか一項に記載の方法。
- 分離ユニットが、水平型回転ドラムであり、ドラムが、入口から出口へ傾斜している、請求項1から10のいずれか一項に記載の方法。
- ドラムが、水平に対して少なくとも10°傾斜している、請求項11に記載の方法。
- ドラムが、水平に対して少なくとも20°傾斜している、請求項11又は12に記載の方法。
- ドラムが、水平に対して少なくとも30°傾斜している、請求項11から13のいずれか一項に記載の方法。
- ステップv)において得られた水が、ステップiii)における工程に再循環される、請求項1から14のいずれか一項に記載の方法。
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- 2019-08-09 JP JP2021509163A patent/JP7450603B2/ja active Active
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JP2013511612A (ja) | 2009-11-23 | 2013-04-04 | ビーエーエスエフ ソシエタス・ヨーロピア | 発泡された吸水ポリマー粒子の製造方法 |
JP2016094625A (ja) | 2010-03-25 | 2016-05-26 | 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 |
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CN112533692A (zh) | 2021-03-19 |
US20210154637A1 (en) | 2021-05-27 |
JP2021536512A (ja) | 2021-12-27 |
KR20210036368A (ko) | 2021-04-02 |
WO2020038742A1 (de) | 2020-02-27 |
EP3840872B1 (de) | 2023-08-30 |
CN112533692B (zh) | 2023-03-28 |
EP3840872A1 (de) | 2021-06-30 |
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