EP0664816A1 - Water-absorbent polymer having improved properties - Google Patents

Water-absorbent polymer having improved properties

Info

Publication number
EP0664816A1
EP0664816A1 EP93923399A EP93923399A EP0664816A1 EP 0664816 A1 EP0664816 A1 EP 0664816A1 EP 93923399 A EP93923399 A EP 93923399A EP 93923399 A EP93923399 A EP 93923399A EP 0664816 A1 EP0664816 A1 EP 0664816A1
Authority
EP
European Patent Office
Prior art keywords
water
crosslinking agent
surface crosslinking
crosslinked polymer
percent
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.)
Withdrawn
Application number
EP93923399A
Other languages
German (de)
English (en)
French (fr)
Inventor
Andrew T. Graham
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dow Chemical Co
Original Assignee
Dow Chemical Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US07/960,675 external-priority patent/US5447727A/en
Priority claimed from US07/975,171 external-priority patent/US5385983A/en
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of EP0664816A1 publication Critical patent/EP0664816A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
    • C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
    • 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
    • C08F8/00—Chemical modification by after-treatment
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Hematology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP93923399A 1992-10-14 1993-10-14 Water-absorbent polymer having improved properties Withdrawn EP0664816A1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US96067492A 1992-10-14 1992-10-14
US960674 1992-10-14
US07/960,675 US5447727A (en) 1992-10-14 1992-10-14 Water-absorbent polymer having improved properties
US960675 1992-10-14
US07/975,171 US5385983A (en) 1992-11-12 1992-11-12 Process for preparing a water-absorbent polymer
US975171 1992-11-12
PCT/US1993/009848 WO1994009043A1 (en) 1992-10-14 1993-10-14 Water-absorbent polymer having improved properties

Publications (1)

Publication Number Publication Date
EP0664816A1 true EP0664816A1 (en) 1995-08-02

Family

ID=27420741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93923399A Withdrawn EP0664816A1 (en) 1992-10-14 1993-10-14 Water-absorbent polymer having improved properties

Country Status (6)

Country Link
EP (1) EP0664816A1 (ko)
JP (1) JPH08506363A (ko)
KR (1) KR950703583A (ko)
AU (1) AU5329994A (ko)
BR (1) BR9307292A (ko)
WO (1) WO1994009043A1 (ko)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0712659B1 (en) * 1994-06-13 2002-01-09 Nippon Shokubai Co., Ltd. Water absorbent, process for producing the same, and absorbent article containing the same
USRE38444E1 (en) 1994-06-13 2004-02-24 Nippon Shokubai Co., Ltd. Absorbing agent, process of manufacturing same, and absorbent product containing same
DE19543366C2 (de) * 1995-11-21 1998-09-10 Stockhausen Chem Fab Gmbh Mit ungesättigten Aminoalkoholen vernetzte, wasserquellbare Polymerisate, deren Herstellung und Verwendung
DE19543368C2 (de) * 1995-11-21 1998-11-26 Stockhausen Chem Fab Gmbh Wasserabsorbierende Polymere mit verbesserten Eigenschaften, Verfahren zu deren Herstellung und deren Verwendung
ID19116A (id) * 1996-10-15 1998-06-18 Nippon Catalytic Chem Ind Bahan pengabsorpsi air dan proses produksinya
US6184433B1 (en) 1997-04-14 2001-02-06 Nippon Shokubai Co., Ltd. Pressure-resistant absorbent resin, disposable diaper using the resin, and absorbent resin, and method for production thereof
DE19716657A1 (de) * 1997-04-21 1998-10-22 Stockhausen Chem Fab Gmbh Superabsorber mit kontrollierter Absorptionsgeschwindigkeit
DE19717394C2 (de) * 1997-04-24 2001-11-29 Stockhausen Chem Fab Gmbh Druckfähige Einkomponentenquellpaste und deren Verwendung
US5856410A (en) * 1997-05-23 1999-01-05 Amcol International Corporation Polyacrylate superabsorbent post-polymerization neutralized with solid, non-hydroxyl neutralizing agent.
US6187902B1 (en) 1997-12-25 2001-02-13 Nippon Shokubai Co., Ltd. Production process of hydrophilic crosslinked polymer
US6254990B1 (en) 1998-02-18 2001-07-03 Nippon Shokubai Co., Ltd. Surface-crosslinking process for water-absorbent resin
DE19807502B4 (de) * 1998-02-21 2004-04-08 Basf Ag Verfahren zur Nachvernetzung von Hydrogelen mit 2-Oxazolidinonen, daraus hergestellte Hydrogele und deren Verwendung
US6503979B1 (en) * 1998-02-26 2003-01-07 Basf Aktiengesellschaft Method for cross-linking hydrogels with bis- and poly-2-oxazolidinones
JP2009154155A (ja) * 1998-03-03 2009-07-16 Nippon Shokubai Co Ltd 吸水剤の製造方法
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
JP2010214371A (ja) * 1998-04-15 2010-09-30 Nippon Shokubai Co Ltd 吸水剤、吸収体、吸収性物品、および吸収特性の測定方法
JP4942235B2 (ja) * 1998-04-15 2012-05-30 株式会社日本触媒 吸水剤、吸収体、吸収性物品、および吸収特性の測定方法
DE19825486C2 (de) 1998-06-08 2000-07-06 Stockhausen Chem Fab Gmbh Wasserabsorbierende Polymere mit supramolekularen Hohlraummolekülen, Verfahren zu deren Herstellung und deren Verwendung
DE19854573A1 (de) * 1998-11-26 2000-05-31 Basf Ag Verfahren zur Nachvernetzung von Hydrogelen mit 2-Oxo-tetrahydro-1,3-oxazinen
DE19854574A1 (de) 1998-11-26 2000-05-31 Basf Ag Verfahren zur Nachvernetzung von Hydrogelen mit N-Acyl-2-Oxazolidinonen
US6297335B1 (en) * 1999-02-05 2001-10-02 Basf Aktiengesellschaft Crosslinked, hydrophilic, highly swellable hydrogels, production thereof and use thereof
DE19939662A1 (de) 1999-08-20 2001-02-22 Stockhausen Chem Fab Gmbh Wasserabsorbierende Polymere mit Hohlraumverbindungen, Verfahren zur deren Herstellung und deren Verwendung
US6414214B1 (en) * 1999-10-04 2002-07-02 Basf Aktiengesellschaft Mechanically stable hydrogel-forming polymers
US6569910B1 (en) 1999-10-27 2003-05-27 Basf Aktiengesellschaft Ion exchange resins and methods of making the same
AU4690201A (en) * 2000-04-13 2001-10-30 Sanyo Chemical Ind Ltd Crosslinked polymer, process for producing the same, absorbent structure, and absorbent article
US7101946B2 (en) 2002-02-14 2006-09-05 Stockhausen Gmbh Water-absorbing polymers having interstitial compounds, a process for their production, and their use
US7872076B2 (en) 2003-11-07 2011-01-18 Nippon Shokubai Co., Ltd. Particulate water-absorbent resin composition and its production process
US7163966B2 (en) * 2003-12-19 2007-01-16 Stockhausen, Inc. Superabsorbent polymer having increased rate of water absorption
DE102004055765A1 (de) 2004-11-18 2006-05-24 Basf Ag Verfahren zur Herstellung wasserabsorbierender Polymere
SA08290542B1 (ar) 2007-08-28 2012-11-14 نيبون شوكوباي كو. ، ليمتد طريقة لإنتاج راتنج ماص للماء
FR3005660B1 (fr) * 2013-05-17 2015-04-24 Arkema France Procede de reticulation en surface de particules de polymere

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842602A (ja) * 1981-09-07 1983-03-12 Sanyo Chem Ind Ltd 吸水性樹脂の製造法
US4666975A (en) * 1984-03-05 1987-05-19 Kao Corporation Absorptive material
US4734478A (en) * 1984-07-02 1988-03-29 Nippon Shokubai Kagaku Kogyo Co., Ltd. Water absorbing agent
US4783510A (en) * 1986-06-04 1988-11-08 Taiyo Fishery Co., Ltd. Process for improving a water absorbent polyacrylic acid polymer and an improved polymer produced by said process
EP0317106B1 (en) * 1987-10-29 1993-02-17 Nippon Shokubai Kagaku Kogyo Co., Ltd Method of surface-treating water-absorbent resin
US5164459A (en) * 1990-04-02 1992-11-17 Nippon Shokubai Kagaku Kogyo Co., Ltd. Method for treating the surface of an absorbent resin

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9409043A1 *

Also Published As

Publication number Publication date
WO1994009043A1 (en) 1994-04-28
JPH08506363A (ja) 1996-07-09
KR950703583A (ko) 1995-09-20
AU5329994A (en) 1994-05-09
BR9307292A (pt) 1999-06-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19950404

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17Q First examination report despatched

Effective date: 19960604

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: THE DOW CHEMICAL COMPANY

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19981124