JP3280077B2 - 超吸収剤の吸水速度を向上させる方法及び吸水速度の向上した超吸収剤ポリマー - Google Patents

超吸収剤の吸水速度を向上させる方法及び吸水速度の向上した超吸収剤ポリマー

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Publication number
JP3280077B2
JP3280077B2 JP21027492A JP21027492A JP3280077B2 JP 3280077 B2 JP3280077 B2 JP 3280077B2 JP 21027492 A JP21027492 A JP 21027492A JP 21027492 A JP21027492 A JP 21027492A JP 3280077 B2 JP3280077 B2 JP 3280077B2
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JP
Japan
Prior art keywords
carbonate
monomer solution
blowing agent
acid
hydrogel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP21027492A
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English (en)
Japanese (ja)
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JPH05237378A (ja
Inventor
ジェイ.リンド エリック
Original Assignee
ストックハウゼン ルイジアナ リミティド
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25123018&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JP3280077(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ストックハウゼン ルイジアナ リミティド filed Critical ストックハウゼン ルイジアナ リミティド
Publication of JPH05237378A publication Critical patent/JPH05237378A/ja
Application granted granted Critical
Publication of JP3280077B2 publication Critical patent/JP3280077B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/125Water, e.g. hydrated salts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42Use of materials characterised by their function or physical properties
    • A61L15/425Porous materials, e.g. foams or sponges
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS 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
    • A61L15/00Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42Use of materials characterised by their function or physical properties
    • A61L15/60Liquid-swellable gel-forming materials, e.g. super-absorbents
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/08Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00Characterised by the use of unspecified polymers
    • C08J2300/10Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • General Chemical & Material Sciences (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
JP21027492A 1991-10-22 1992-08-06 超吸収剤の吸水速度を向上させる方法及び吸水速度の向上した超吸収剤ポリマー Expired - Lifetime JP3280077B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/781,526 US5118719A (en) 1991-10-22 1991-10-22 Enhancing absorption rates of superabsorbents by incorporating a blowing agent
US781526 1991-10-22

Publications (2)

Publication Number Publication Date
JPH05237378A JPH05237378A (ja) 1993-09-17
JP3280077B2 true JP3280077B2 (ja) 2002-04-30

Family

ID=25123018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21027492A Expired - Lifetime JP3280077B2 (ja) 1991-10-22 1992-08-06 超吸収剤の吸水速度を向上させる方法及び吸水速度の向上した超吸収剤ポリマー

Country Status (5)

Country Link
US (1) US5118719A (https=)
EP (1) EP0538983B1 (https=)
JP (1) JP3280077B2 (https=)
DE (1) DE69230964T2 (https=)
TW (1) TW221449B (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10669381B2 (en) 2016-03-14 2020-06-02 Lg Chem, Ltd. Method for preparing super absorbent polymer
US10857044B2 (en) 2016-01-28 2020-12-08 Lg Chem, Ltd. Method for preparing superabsorbent polymer

Families Citing this family (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4308347A1 (de) * 1993-03-17 1994-09-29 Beiersdorf Ag Hydrophile Polyurethanschaumgele, insbesondere zur Behandlung von tiefen Wunden und Verfahren zu deren Herstellung
US5338766A (en) 1993-03-26 1994-08-16 The Procter & Gamble Company Superabsorbent polymer foam
US5328935A (en) * 1993-03-26 1994-07-12 The Procter & Gamble Company Method of makig a superabsorbent polymer foam
DE4418818C2 (de) * 1993-07-09 1997-08-21 Stockhausen Chem Fab Gmbh Pulverförmige, vernetzte, wäßrige Flüssigkeiten und/oder Körperflüssigkeiten absorbierende Polymere, Verfahren zu ihrer Herstellung und ihre Anwendung
IL110134A (en) * 1993-07-09 1998-07-15 Stockhausen Chem Fab Gmbh Polymers capable of absorbing aqueous liquids and body fluids their preparation and use
US5451613A (en) * 1993-09-17 1995-09-19 Nalco Chemical Company Superabsorbent polymer having improved absorption rate and absorption under pressure
US5314420A (en) * 1993-09-17 1994-05-24 Nalco Chemical Company Superabsorbent polymer having improved absorption rate and absorption under pressure
JPH09509592A (ja) * 1994-02-17 1997-09-30 ザ、プロクター、エンド、ギャンブル、カンパニー 変性表面特性を有する多孔性吸収性材料およびその製法
US5610208A (en) 1994-02-17 1997-03-11 Nippon Shokubai Co., Ltd. Water-absorbent agent, method for production thereof, and water-absorbent composition
US5849405A (en) * 1994-08-31 1998-12-15 The Procter & Gamble Company Absorbent materials having improved absorbent property and methods for making the same
US5843575A (en) * 1994-02-17 1998-12-01 The Procter & Gamble Company Absorbent members comprising absorbent material having improved absorbent property
US5599335A (en) * 1994-03-29 1997-02-04 The Procter & Gamble Company Absorbent members for body fluids having good wet integrity and relatively high concentrations of hydrogel-forming absorbent polymer
US5372766A (en) * 1994-03-31 1994-12-13 The Procter & Gamble Company Flexible, porous, absorbent, polymeric macrostructures and methods of making the same
US5830543A (en) 1994-05-30 1998-11-03 Nippon Shokubai Co., Ltd. Gelling material for aqueous fluids
WO1996004024A1 (en) 1994-08-01 1996-02-15 Leonard Pearlstein High performance superabsorbent material and absorbent devices containing the same
US5849816A (en) * 1994-08-01 1998-12-15 Leonard Pearlstein Method of making high performance superabsorbent material
US5549590A (en) * 1994-08-01 1996-08-27 Leonard Pearlstein High performance absorbent particles and methods of preparation
US5693707A (en) * 1994-09-16 1997-12-02 Air Products And Chemicals, Inc. Liquid absorbent composition for nonwoven binder applications
EP0744435B2 (en) * 1994-12-08 2011-03-23 Nippon Shokubai Co., Ltd. Water-absorbent resin, process for production thereof, and water-absorbent resin composition
US5500451A (en) * 1995-01-10 1996-03-19 The Procter & Gamble Company Use of polyglycerol aliphatic ether emulsifiers in making high internal phase emulsions that can be polymerized to provide absorbent foams
DE19607551A1 (de) * 1996-02-28 1997-09-04 Basf Ag Wasserabsorbierende, schaumförmige, vernetzte Polymerisate, Verfahren zu ihrer Herstellung und ihre Verwendung
US6107358A (en) * 1996-08-23 2000-08-22 Nippon Shokubai Co., Ltd. Water-absorbent resin and method for production thereof
EP0876888B1 (en) * 1996-10-24 2012-12-12 Nippon Shokubai Co., Ltd. Process for producing water-absorbing resins
JP4141526B2 (ja) 1998-04-07 2008-08-27 株式会社日本触媒 吸水性樹脂の製造方法
DE19909214A1 (de) 1999-03-03 2000-09-07 Basf Ag Wasserabsorbierende, schaumförmige, vernetzte Polymerisate mit verbesserter Verteilungswirkung, Verfahren zu ihrer Herstellung und ihre Verwendung
US20010006267A1 (en) 1999-12-27 2001-07-05 Nobuyuki Harada Production processes for basic water-absorbent resin and water-absorbing agent, and use thereof
US6833488B2 (en) 2001-03-30 2004-12-21 Exotech Bio Solution Ltd. Biocompatible, biodegradable, water-absorbent material and methods for its preparation
DE10231356B4 (de) * 2002-07-11 2007-02-15 Stockhausen Gmbh Wasserabsorbierende, schaumförmige Polymergebilde, Verfahren zu deren Herstellung, deren Verwendung sowie daraus hergestellte Verbunde
US7425595B2 (en) * 2003-12-15 2008-09-16 Absorbent Technologies, Inc. Superabsorbent polymer products including a beneficial additive and methods of making and application
KR101278634B1 (ko) * 2003-12-15 2013-06-25 업소번트 테크놀로지스 인코포레이티드 생체활성 성장 촉진 첨가제를 포함하는 고흡수 중합체 생성물 및 이의 형성 방법
US7163966B2 (en) 2003-12-19 2007-01-16 Stockhausen, Inc. Superabsorbent polymer having increased rate of water absorption
AU2005280088A1 (en) * 2004-08-27 2006-03-09 Absorbent Technologies, Inc. Superabsorbent polymers in agricultural applications
DE102005042606A1 (de) 2005-09-07 2007-03-08 Basf Ag Neutralisationsverfahren
US20070167330A1 (en) * 2006-01-17 2007-07-19 Savich Milan H Superabsorbent polymer applicator
US20070163172A1 (en) * 2006-01-17 2007-07-19 Savich Milan H Biodegradable mat containing superabsorbent polymers
US7607259B2 (en) * 2006-01-17 2009-10-27 Absorbent Technologies, Inc. Superabsorbent polymer root dip
DE102006042687A1 (de) * 2006-09-12 2008-03-27 Wacker Chemie Ag Mikrowellenschaum
WO2010114192A1 (en) * 2009-04-03 2010-10-07 Woongjin Coway Co., Ltd Filtering device for food waste treatment apparatus
US8791210B2 (en) 2009-02-17 2014-07-29 Nippon Shokubai Co., Ltd. Polyacrylic water-absorbent resin powder and method for producing the same
DE102009016404A1 (de) 2009-04-07 2010-10-21 Evonik Stockhausen Gmbh Verwendung von Hohlkörpern zur Herstellung wasserabsorbierender Polymergebilde
EP2238957A1 (en) 2009-04-10 2010-10-13 The Procter & Gamble Company Absorbent core
DE102009040949A1 (de) 2009-09-11 2011-03-31 Evonik Stockhausen Gmbh Plasmamodifizierung wasserabsorbierender Polymergebilde
WO2011034146A1 (ja) 2009-09-16 2011-03-24 株式会社日本触媒 吸水性樹脂粉末の製造方法
CN102665771A (zh) * 2009-11-23 2012-09-12 巴斯夫欧洲公司 制备吸水性起泡聚合物颗粒的方法
JP5647625B2 (ja) 2009-12-24 2015-01-07 株式会社日本触媒 ポリアクリル酸系吸水性樹脂粉末及びその製造方法
EP3115382B1 (en) 2010-04-07 2019-07-10 Nippon Shokubai Co., Ltd. Method for producing water absorbent polyacrylic acid (salt) resin powder, and water absorbent polyacrylic acid (salt) resin powder
EP2565219B1 (en) 2010-04-27 2018-06-27 Nippon Shokubai Co., Ltd. Method for producing polyacrylic acid (salt)-based water absorbent resin powder
JP6157853B2 (ja) 2010-06-30 2017-07-05 株式会社日本触媒 ポリアクリル酸系吸水性樹脂及びその製造方法
US9596801B2 (en) 2010-10-25 2017-03-21 Vjs Investments Limited Superabsorbent polymer seed coatings and associated methods
DE102011007723A1 (de) 2011-04-20 2012-10-25 Evonik Stockhausen Gmbh Verfahren zur Herstellung von wasserabsorbierenden Polymeren mit hoher Absorptionsgeschwindigkeit
CN102225981B (zh) * 2011-04-27 2013-11-13 浙江卫星石化股份有限公司 多孔型丙烯酸钠高吸水性树脂的制备方法
US9265855B2 (en) * 2011-05-18 2016-02-23 The Procter & Gamble Company Feminine hygiene absorbent article comprising a superabsorbent foam of high swell rate
EP2710056A2 (en) * 2011-05-18 2014-03-26 Basf Se Production of a superabsorbent foam of high swell rate
EP2727953B1 (en) 2011-06-29 2017-03-08 Nippon Shokubai Co., Ltd. Polyacrylic acid (salt) water-absorbent resin powder, and method for producing same
DE102011086516A1 (de) 2011-11-17 2013-05-23 Evonik Degussa Gmbh Superabsorbierende Polymere mit schnellen Absorptionseigenschaften sowieVerfahren zu dessen Herstellung
CN102828213B (zh) * 2012-08-28 2016-01-20 李甫文 链带电镀支架及使用该支架的电镀设备
US9302248B2 (en) 2013-04-10 2016-04-05 Evonik Corporation Particulate superabsorbent polymer composition having improved stability
WO2015046604A1 (ja) 2013-09-30 2015-04-02 株式会社日本触媒 粒子状吸水剤の充填方法および粒子状吸水剤充填物のサンプリング方法
WO2015133440A1 (ja) 2014-03-03 2015-09-11 株式会社日本触媒 ポリアクリル酸(塩)系吸水性樹脂の製造方法
US9873104B2 (en) 2014-03-03 2018-01-23 Nippon Shokubai Co., Ltd. Method for producing polyacrylic acid (salt)-based water-absorbing resin
CN106232629B (zh) * 2014-04-25 2019-11-15 松原产业株式会社 应用碳酸盐发泡剂和带式干燥的吸水性聚合物的生产
US10695746B2 (en) 2015-01-07 2020-06-30 Nippon Shokubai Co., Ltd. Water absorbent agent
KR101871968B1 (ko) 2015-06-01 2018-06-27 주식회사 엘지화학 고흡수성 수지
KR101949454B1 (ko) 2015-06-15 2019-02-18 주식회사 엘지화학 고흡수성 수지
KR101918285B1 (ko) * 2015-06-17 2018-11-13 주식회사 엘지화학 고흡수성 수지의 제조 방법
KR101949995B1 (ko) 2015-07-06 2019-02-19 주식회사 엘지화학 고흡수성 수지의 제조 방법 및 이로부터 제조된 고흡수성 수지
KR101855351B1 (ko) 2015-08-13 2018-05-04 주식회사 엘지화학 고흡수성 수지의 제조 방법
WO2017146347A1 (ko) 2016-02-25 2017-08-31 주식회사 엘지화학 고흡수성 수지 및 이의 제조 방법
US11602577B2 (en) 2016-03-28 2023-03-14 Nippon Shokubai Co., Ltd. Water-absorbing agent and method for producing same, and absorbent article produced using water-absorbing agent
EP4474358A1 (en) * 2023-06-07 2024-12-11 Universite De Bordeaux Process for removing metal pollutants from a medium

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1104782A (en) * 1976-06-07 1981-07-14 Robert E. Erickson Absorbent films and laminates
US4410571A (en) * 1980-08-25 1983-10-18 Johnson & Johnson Absorbent products, process and compositions for immobilization of particulate absorbents
DE3239476C2 (de) * 1981-10-26 1984-06-20 Arakawa Kagaku Kogyo K.K., Osaka Verfahren zur Herstellung eines festen, trockenen und wasserabsorbierenden harzes
US4394184A (en) * 1982-03-26 1983-07-19 Pennwalt Corporation Determination of grain refiners in phosphate conversion coating baths
US4529739A (en) * 1984-07-24 1985-07-16 The Dow Chemical Company Foamed polymeric materials
US4654039A (en) * 1985-06-18 1987-03-31 The Proctor & Gamble Company Hydrogel-forming polymer compositions for use in absorbent structures
USRE32649E (en) * 1985-06-18 1988-04-19 The Procter & Gamble Company Hydrogel-forming polymer compositions for use in absorbent structures
CA1279437C (en) * 1985-06-24 1991-01-22 William Alexander Continuous method for preparing polyacrylate resins
US4742086A (en) * 1985-11-02 1988-05-03 Lion Corporation Process for manufacturing porous polymer
DE3613207A1 (de) * 1986-04-18 1987-10-22 Akzo Gmbh Mit wasser quellbare zusammensetzung, ihre herstellung und verwendung
US4808637A (en) * 1987-05-14 1989-02-28 Johnson & Johnson Patient Care, Inc. Superabsorbent composition and process
US4826881A (en) * 1987-09-08 1989-05-02 C-I-L Inc. Vesiculated polymer granules
ZA892846B (en) * 1988-04-21 1989-12-27 Kimberly Clark Co Absorbent products containing hydrogels with ability to swell against pressure
AT391321B (de) * 1988-08-29 1990-09-25 Chemie Linz Gmbh Verfahren zur herstellung von fluessigkeitsabsorbierenden acrylharzen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10857044B2 (en) 2016-01-28 2020-12-08 Lg Chem, Ltd. Method for preparing superabsorbent polymer
US10669381B2 (en) 2016-03-14 2020-06-02 Lg Chem, Ltd. Method for preparing super absorbent polymer

Also Published As

Publication number Publication date
DE69230964D1 (de) 2000-05-31
EP0538983A1 (en) 1993-04-28
TW221449B (https=) 1994-03-01
DE69230964T2 (de) 2000-11-09
US5118719A (en) 1992-06-02
EP0538983B1 (en) 2000-04-26
JPH05237378A (ja) 1993-09-17

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