JP5871803B2 - 表面後架橋された吸水性ポリマー粒子の後給湿方法 - Google Patents
表面後架橋された吸水性ポリマー粒子の後給湿方法 Download PDFInfo
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- JP5871803B2 JP5871803B2 JP2012532569A JP2012532569A JP5871803B2 JP 5871803 B2 JP5871803 B2 JP 5871803B2 JP 2012532569 A JP2012532569 A JP 2012532569A JP 2012532569 A JP2012532569 A JP 2012532569A JP 5871803 B2 JP5871803 B2 JP 5871803B2
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- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- XXIJLZCMICIETD-UHFFFAOYSA-M sodium;1,2-dihydroxy-2-oxoethanesulfinate Chemical compound [Na+].OC(=O)C(O)S([O-])=O XXIJLZCMICIETD-UHFFFAOYSA-M 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- CCUZKVDGQHXAFK-UHFFFAOYSA-L strontium;2-hydroxypropanoate Chemical compound [Sr+2].CC(O)C([O-])=O.CC(O)C([O-])=O CCUZKVDGQHXAFK-UHFFFAOYSA-L 0.000 description 1
- RXSHXLOMRZJCLB-UHFFFAOYSA-L strontium;diacetate Chemical compound [Sr+2].CC([O-])=O.CC([O-])=O RXSHXLOMRZJCLB-UHFFFAOYSA-L 0.000 description 1
- FXWRHZACHXRMCI-UHFFFAOYSA-L strontium;diformate Chemical compound [Sr+2].[O-]C=O.[O-]C=O FXWRHZACHXRMCI-UHFFFAOYSA-L 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- 229920000247 superabsorbent polymer Polymers 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229960000984 tocofersolan Drugs 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- PLSARIKBYIPYPF-UHFFFAOYSA-H trimagnesium dicitrate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O PLSARIKBYIPYPF-UHFFFAOYSA-H 0.000 description 1
- RRHXZLALVWBDKH-UHFFFAOYSA-M trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;chloride Chemical compound [Cl-].CC(=C)C(=O)OCC[N+](C)(C)C RRHXZLALVWBDKH-UHFFFAOYSA-M 0.000 description 1
- JOPDZQBPOWAEHC-UHFFFAOYSA-H tristrontium;diphosphate Chemical compound [Sr+2].[Sr+2].[Sr+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JOPDZQBPOWAEHC-UHFFFAOYSA-H 0.000 description 1
- WGIWBXUNRXCYRA-UHFFFAOYSA-H trizinc;2-hydroxypropane-1,2,3-tricarboxylate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O.[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O WGIWBXUNRXCYRA-UHFFFAOYSA-H 0.000 description 1
- 229940046009 vitamin E Drugs 0.000 description 1
- 235000019165 vitamin E Nutrition 0.000 description 1
- 239000011709 vitamin E Substances 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011746 zinc citrate Substances 0.000 description 1
- 235000006076 zinc citrate Nutrition 0.000 description 1
- 229940068475 zinc citrate Drugs 0.000 description 1
- 239000011576 zinc lactate Substances 0.000 description 1
- 235000000193 zinc lactate Nutrition 0.000 description 1
- 229940050168 zinc lactate Drugs 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
- 229960001763 zinc sulfate Drugs 0.000 description 1
- 229910000368 zinc sulfate Inorganic materials 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 description 1
- 239000002076 α-tocopherol Substances 0.000 description 1
- 235000004835 α-tocopherol Nutrition 0.000 description 1
Classifications
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/245—Differential crosslinking of one polymer with one crosslinking type, e.g. surface crosslinking
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- 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
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
-
- 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
- C08F6/00—Post-polymerisation treatments
- C08F6/26—Treatment of polymers prepared in bulk also solid polymers or polymer melts
-
- 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
- A61L2400/00—Materials characterised by their function or physical properties
- A61L2400/18—Modification of implant surfaces in order to improve biocompatibility, cell growth, fixation of biomolecules, e.g. plasma treatment
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/14—Water soluble or water swellable polymers, e.g. aqueous gels
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- Processes Of Treating Macromolecular Substances (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
a)少なくとも部分的に中和されていてよい、酸基を有する少なくとも1種のエチレン系不飽和モノマー、
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)任意に、a)に挙げたモノマーと共重合可能な1種又はそれ以上のエチレン系不飽和モノマー及び
e)任意に、1種又はそれ以上の水溶性ポリマー
を含有するモノマー溶液又はモノマー懸濁液を重合させることによって吸水性ポリマー粒子を製造し、
乾燥させ、粉砕し、分級し、かつ表面後架橋することを含み、その際に
i)表面後架橋されたポリマー粒子を後給湿し、
ii)後給湿されたポリマー粒子を空気輸送し、かつ
iii)任意に、後給湿されたポリマー粒子を分級する
ことによる吸水性ポリマー粒子の製造方法によって解決され、
前記方法は、後給湿i)と空気輸送ii)との時間間隔が1時間未満であることによって特徴付けられている。
・高いガス流速の範囲内での浮遊輸送(Flugfoerderung)及び流動輸送(Stroemfoerderung)の場合に、自由流動する個々の粒子の法則がほぼ当てはまる。これは古典的な種類の空気輸送である。生成物堆積は全く起こらない。管中に本質的に均一な被輸送物分布が存在する。
・ガス流速が低下する場合には、管底流輸送(Straehnenfoerderung)の範囲内となり、そこで被輸送物はとりわけ下半分で流動する。管の上半分に浮遊輸送が存在する。
・小さいガス流速の場合に、輸送は極めてゆっくりと、濃厚流動輸送(プラグ輸送、インパルス輸送(Impulsfoerderung))として高い圧力損失を伴って行われる。
D 輸送管の内径
g 重力加速度。
吸水性ポリマー粒子は、モノマー溶液又はモノマー懸濁液の重合により製造され、かつ通常、水に不溶である。
測定は、他に記載されない限り、23±2℃の周囲温度及び50±10%の相対空気湿度で実施する。吸水性ポリマー粒子を、その測定前に十分混合する。
0.3psi(2070Pa)の圧力負荷下の膨潤ゲル層の液体再伝導性(SFC)を、欧州特許出願公開(EP-A1)第0 640 330号明細書に記載されたように、吸水性ポリマー粒子からなる膨潤ゲル層のゲル層透過性として測定し、その際に前記の特許出願公開明細書の19頁及び図8に記載された装置を、ガラスフリット(40)をもはや使用せず、プランジャー(39)がシリンダー(37)と同じプラスチック材料からなり、かつ今や接触面全体にわたって均一に分布された21個の同じ大きさの孔を有するように変更した。測定の手順並びに評価は、欧州特許出願公開(EP-A1)第0 640 330号明細書に対して不変である。流れは自動的に検出される。
SFC[cm3s/g]=(Fg(t=0)×L0)/(d×A×WP)
ここで、Fg(t=0)はNaCl溶液の流れ[g/s]であり、これは流れ測定のデータFg(t)の線形回帰分析に基づいてt=0に対する外挿により得られ、L0はゲル層の厚さ[cm]であり、dはNaCl溶液の密度[g/cm3]であり、Aはゲル層の面積[cm2]であり、かつWPはゲル層の静水圧[dyn/cm2]である。
遠心機保持容量(CRC)は、EDANAにより推奨された試験法No. WSP 241.2-05"Centrifuge Retention Capacity"に従って測定される。
49.2g/cm2の圧力下の吸収(AUL0.7psi)は、EDANA(European Disposables and Nonwovens Association)により推奨された試験法No. WSP 242.2-05"Absorption under Pressure"に類似して測定され、その際に21.0g/cm2の圧力(AUL0.3psi)の代わりに49.2g/cm2の圧力(AUL0.7psi)に調節される。
例1(吸水性ポリマー粒子の製造)
脱イオン水、50質量%カセイソーダ液及びアクリル酸の連続的な混合により、アクリル酸/アクリル酸ナトリウム溶液を製造したので、中和度は71.3mol%に相当していた。モノマー溶液の固体含量は38.8質量%であった。
モノマー溶液 20t/h
ポリエチレングリコール−400−ジアクリラート 40kg/h
過酸化水素溶液/ペルオキソ二硫酸ナトリウム溶液 82.6kg/h
アスコルビン酸溶液 21kg/h。
ベースポリマー 7.5t/h
表面後架橋剤溶液 270.0kg/h。
型式ProfiMixx 47のキッチンマシン(Robert Bosch GmbH; Gerlingen-Schillerhoehe; DE)中に、例1からの吸水性ポリマー粒子220gを装入し、撹拌しながら(スピード4;約500rpm)、水5.5gで後給湿し、1分間後撹拌した。水を、チューブポンプを用いて5g/minの計量供給速度で噴霧した。チューブは2.54mmの内径を有していた。
例2のように行った。30個のセラミック媒体で5分間の代わりに、40個のセラミック媒体で15分間粉砕した。
例3のように行った。水5.5gの代わりに、水11.0gで後給湿した。
Claims (14)
- a)少なくとも部分的に中和されていてよい、酸基を有する少なくとも1種のエチレン系不飽和モノマー、
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)任意に、a)に挙げたモノマーと共重合可能な1種又はそれ以上のエチレン系不飽和モノマー及び
e)任意に、1種又はそれ以上の水溶性ポリマー
を含有するモノマー溶液又はモノマー懸濁液を重合させることによって吸水性ポリマー粒子を製造し、
乾燥させ、粉砕し、分級し、かつ表面後架橋することを含み、その際に
i)表面後架橋されたポリマー粒子を後給湿し、その際、後給湿i)がミキサーによって実施され、
ii)後給湿されたポリマー粒子を空気輸送し、かつ
iii)任意に、後給湿されたポリマー粒子を分級することによる
吸水性ポリマー粒子の製造方法であって、
後給湿i)と空気輸送ii)との時間間隔が1時間未満であり、かつ
後給湿i)のために使用される水の量が、吸水性ポリマー粒子に対して少なくとも2.5質量%であることを特徴とする、
吸水性ポリマー粒子の製造方法。 - 後給湿i)と空気輸送ii)との時間間隔が45分未満である、請求項1記載の方法。
- 後給湿i)と空気輸送ii)との時間間隔が30分未満である、請求項1記載の方法。
- 後給湿i)と空気輸送ii)との時間間隔が15分未満である、請求項1記載の方法。
- 吸水性ポリマー粒子を、共有結合の形成により表面後架橋させる、請求項1から4までのいずれか1項記載の方法。
- 表面後架橋の際に、付加的に多価金属カチオンを使用する、請求項5記載の方法。
- 後給湿i)に供給される吸水性ポリマー粒子が、40〜80℃の温度を有する、請求項1から6までのいずれか1項記載の方法。
- 後給湿i)のために、無機粒状物質、コロイド状に溶解された無機物質、有機ポリマー、カチオン性ポリマー及び/又は多価金属カチオンの塩を含有する水溶液又は水性分散液を使用する、請求項1から7までのいずれか1項記載の方法。
- 後給湿i)のために使用される水の量が、吸水性ポリマー粒子に対して5質量%である、請求項1から8までのいずれか1項記載の方法。
- 空気輸送ii)に供給される吸水性ポリマー粒子が、40〜80℃の温度を有する、請求項1から9までのいずれか1項記載の方法。
- 空気輸送ii)の際の初速度が、10〜18のフルード数に相当する、請求項1から10までのいずれか1項記載の方法。
- 吸水性ポリマー粒子の少なくとも95質量%が、少なくとも150μmの粒度を有する、請求項1から11までのいずれか1項記載の方法。
- 吸水性ポリマー粒子の少なくとも95質量%が、最大でも600μmの粒度を有する、請求項1から12までのいずれか1項記載の方法。
- 吸水性ポリマー粒子が少なくとも15g/gの遠心機保持容量を有する、請求項1から13までのいずれか1項記載の方法。
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PCT/EP2010/064817 WO2011042429A1 (de) | 2009-10-09 | 2010-10-05 | Verfahren zur nachbefeuchtung oberflächennachvernetzter wasserabsorbierender polymerpartikel |
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US9277872B2 (en) | 2011-01-13 | 2016-03-08 | Rhythmia Medical, Inc. | Electroanatomical mapping |
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KR101871968B1 (ko) * | 2015-06-01 | 2018-06-27 | 주식회사 엘지화학 | 고흡수성 수지 |
KR101949454B1 (ko) | 2015-06-15 | 2019-02-18 | 주식회사 엘지화학 | 고흡수성 수지 |
KR101949995B1 (ko) | 2015-07-06 | 2019-02-19 | 주식회사 엘지화학 | 고흡수성 수지의 제조 방법 및 이로부터 제조된 고흡수성 수지 |
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EP3464427B1 (de) * | 2016-05-31 | 2021-01-06 | Basf Se | Verfahren zur herstellung von superabsorbern |
DE102017206842A1 (de) | 2017-04-24 | 2018-10-25 | Coperion Gmbh | Verfahren zur pneumatischen Förderung von Kunststoffgranulat |
CN110799275A (zh) * | 2017-07-31 | 2020-02-14 | 巴斯夫欧洲公司 | 超吸收性聚合物颗粒的分级方法 |
KR102555381B1 (ko) | 2018-04-03 | 2023-07-12 | 주식회사 엘지화학 | 고흡수성 수지의 제조방법 |
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- 2010-10-05 CN CN201080045484.1A patent/CN102666670B/zh active Active
- 2010-10-05 EP EP10760367.2A patent/EP2486084B1/de active Active
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EP2486084A1 (de) | 2012-08-15 |
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JP2013507466A (ja) | 2013-03-04 |
US20120184684A1 (en) | 2012-07-19 |
CN102666670A (zh) | 2012-09-12 |
EP2486084B1 (de) | 2016-03-23 |
WO2011042429A1 (de) | 2011-04-14 |
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