WO1999025393A3 - Multicomponent superabsorbent gel particles - Google Patents

Multicomponent superabsorbent gel particles Download PDF

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Publication number
WO1999025393A3
WO1999025393A3 PCT/US1998/024006 US9824006W WO9925393A3 WO 1999025393 A3 WO1999025393 A3 WO 1999025393A3 US 9824006 W US9824006 W US 9824006W WO 9925393 A3 WO9925393 A3 WO 9925393A3
Authority
WO
WIPO (PCT)
Prior art keywords
multicomponent
gel particles
particles
disclosed
superabsorbent gel
Prior art date
Application number
PCT/US1998/024006
Other languages
French (fr)
Other versions
WO1999025393A2 (en
Inventor
Thomas W Beihoffer
Michael A Mitchell
Mark Anderson
Anthony S Tomlin
Original Assignee
Amcol International Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27382499&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1999025393(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US08/974,125 external-priority patent/US6072101A/en
Priority to BR9814686-6A priority Critical patent/BR9814686A/en
Priority to EP98959417A priority patent/EP1042013B1/en
Priority to DE69840052T priority patent/DE69840052D1/en
Priority to AU15221/99A priority patent/AU1522199A/en
Priority to SI9820081A priority patent/SI20362A/en
Priority to CA002310691A priority patent/CA2310691A1/en
Application filed by Amcol International Corp filed Critical Amcol International Corp
Priority to JP2000520826A priority patent/JP4837824B2/en
Priority to SK737-2000A priority patent/SK7372000A3/en
Priority to HU0101141A priority patent/HUP0101141A2/en
Priority to IL13605298A priority patent/IL136052A0/en
Publication of WO1999025393A2 publication Critical patent/WO1999025393A2/en
Publication of WO1999025393A3 publication Critical patent/WO1999025393A3/en
Priority to FI20001087A priority patent/FI20001087A/en
Priority to HR20000308A priority patent/HRP20000308A2/en
Priority to NO20002546A priority patent/NO20002546L/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F13/534—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad
    • A61F13/537—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
    • A61F13/5376—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the performance of the layer, e.g. acquisition rate, distribution time, transfer time
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/26—Synthetic macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C08L101/12—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
    • C08L101/14—Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S977/00—Nanotechnology
    • Y10S977/70—Nanostructure
    • Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S977/00—Nanotechnology
    • Y10S977/70—Nanostructure
    • Y10S977/773—Nanoparticle, i.e. structure having three dimensions of 100 nm or less
    • Y10S977/775—Nanosized powder or flake, e.g. nanosized catalyst

Abstract

Multicomponent superabsorbent gel particles are disclosed. The multicomponent particles comprise at least one acidic water-absorbing resin and at least one basic water-absorbing resin. Each particle contains at least one microdomain of the acidic resin in contact with, or in close proximity to, at least one microdomain of the basic resin. Blends of multicomponent superabsorbent gel particles with particles of a second water-absorbing resin also are disclosed. Improved diaper cores containing particles of the multicomponent super-absorbent gel particles also are disclosed.
PCT/US1998/024006 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles WO1999025393A2 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
HU0101141A HUP0101141A2 (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
IL13605298A IL136052A0 (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
JP2000520826A JP4837824B2 (en) 1997-11-19 1998-11-11 Multi-component superabsorbent gel particles
DE69840052T DE69840052D1 (en) 1997-11-19 1998-11-11 MULTICOMPONENT PARTICLES FROM SUPER ABSORBENT GEL
AU15221/99A AU1522199A (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
SI9820081A SI20362A (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
CA002310691A CA2310691A1 (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
BR9814686-6A BR9814686A (en) 1997-11-19 1998-11-11 Demulticomponent superabsorbent gel particles
EP98959417A EP1042013B1 (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
SK737-2000A SK7372000A3 (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles
FI20001087A FI20001087A (en) 1997-11-19 2000-05-09 Multi-component superabsorbent gel particles
HR20000308A HRP20000308A2 (en) 1997-11-19 2000-05-17 Multicomponent superabsorbent gel particles
NO20002546A NO20002546L (en) 1997-11-19 2000-05-18 Multicomponent, superabsorbent gel particles

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US08/974,125 US6072101A (en) 1997-11-19 1997-11-19 Multicomponent superabsorbent gel particles
US09/120,674 US6235965B1 (en) 1997-11-19 1998-07-22 Multicomponent superabsorbent gel particles
US09/179,553 1998-10-28
US08/974,125 1998-10-28
US09/179,553 US6222091B1 (en) 1997-11-19 1998-10-28 Multicomponent superabsorbent gel particles
US09/120,674 1998-10-28

Publications (2)

Publication Number Publication Date
WO1999025393A2 WO1999025393A2 (en) 1999-05-27
WO1999025393A3 true WO1999025393A3 (en) 1999-09-02

Family

ID=27382499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/024006 WO1999025393A2 (en) 1997-11-19 1998-11-11 Multicomponent superabsorbent gel particles

Country Status (20)

Country Link
US (5) US6222091B1 (en)
EP (1) EP1042013B1 (en)
KR (1) KR20010032226A (en)
CN (1) CN1286635A (en)
AU (1) AU1522199A (en)
BR (1) BR9814686A (en)
CA (1) CA2310691A1 (en)
CZ (1) CZ20001786A3 (en)
FI (1) FI20001087A (en)
HR (1) HRP20000308A2 (en)
HU (1) HUP0101141A2 (en)
ID (1) ID30075A (en)
IL (1) IL136052A0 (en)
MX (1) MX242406B (en)
NO (1) NO20002546L (en)
PL (1) PL340959A1 (en)
SI (1) SI20362A (en)
SK (1) SK7372000A3 (en)
TR (1) TR200001461T2 (en)
WO (1) WO1999025393A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11957556B2 (en) 2020-04-30 2024-04-16 The Procter & Gamble Company Absorbent structure

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