CA2233992A1 - Absorbent material having improved absorbent permeability and methods for making the same - Google Patents

Absorbent material having improved absorbent permeability and methods for making the same

Info

Publication number
CA2233992A1
CA2233992A1 CA002233992A CA2233992A CA2233992A1 CA 2233992 A1 CA2233992 A1 CA 2233992A1 CA 002233992 A CA002233992 A CA 002233992A CA 2233992 A CA2233992 A CA 2233992A CA 2233992 A1 CA2233992 A1 CA 2233992A1
Authority
CA
Canada
Prior art keywords
absorbent
absorbent material
permeability
making
methods
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.)
Granted
Application number
CA002233992A
Other languages
French (fr)
Other versions
CA2233992C (en
Inventor
Yumiko Hayashi
Ebrahim Rezai
Lin Wang
Eui-Boo Cho
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.)
Procter and Gamble Co
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of CA2233992A1 publication Critical patent/CA2233992A1/en
Application granted granted Critical
Publication of CA2233992C publication Critical patent/CA2233992C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
    • 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

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

An absorbent material having substantially improved liquid permeability such that it is not subject to gel blocking while maintaining preferred absorbent capacity. The absorbent material comprises (a) a plurality of absorbent gelling particles comprising a water-insoluble, absorbent, hydrogel-forming polymer; and (b) a polycationic polymer covalently bonded to the absorbent gelling particles; wherein the absorbent material has a Saline Flow Conductivity, greater than (500-11.5 . GV)(10-7)cm3sec/g, wherein GV is the gel volume of the absorbent material.
CA002233992A 1995-10-03 1996-10-01 Absorbent material having improved absorbent permeability and methods for making the same Expired - Fee Related CA2233992C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPN5731A AUPN573195A0 (en) 1995-10-03 1995-10-03 Absorbent material having improved absorbent permeability and methods for making the same
AUPN5731 1995-10-03
PCT/US1996/015645 WO1997012575A1 (en) 1995-10-03 1996-10-01 Absorbent material having improved absorbent permeability and methods for making the same

Publications (2)

Publication Number Publication Date
CA2233992A1 true CA2233992A1 (en) 1997-04-10
CA2233992C CA2233992C (en) 2002-04-16

Family

ID=3790059

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002233992A Expired - Fee Related CA2233992C (en) 1995-10-03 1996-10-01 Absorbent material having improved absorbent permeability and methods for making the same

Country Status (5)

Country Link
EP (1) EP0855891A4 (en)
JP (1) JP2000501979A (en)
AU (1) AUPN573195A0 (en)
CA (1) CA2233992C (en)
WO (1) WO1997012575A1 (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7261698A (en) * 1998-04-28 1999-11-16 Procter & Gamble Company, The Absorbent articles with distribution materials positioned underneath storage material
DE19846412A1 (en) 1998-10-08 2000-04-13 Basf Ag New swellable, hydrophilic hydrogel having good absorption properties, useful in hygienic articles, prepared by polymerization, comminution, post-neutralization, drying, grinding and sieving
CO5111017A1 (en) * 1998-12-31 2001-12-26 Kimberly Clark Co ABSORBENT COMPOUNDS WITH INCREASED ABSORPTION PROPERTIES
WO2001023012A1 (en) 1999-09-30 2001-04-05 The Dow Chemical Company Binding superabsorbent polymers to substrates
EP1265571A1 (en) * 2000-03-06 2002-12-18 The Procter & Gamble Company Process of making absorbent structures comprising absorbent polymer compositions with a permeability maintenance agent
DE10043710B4 (en) 2000-09-04 2015-01-15 Evonik Degussa Gmbh Use of powdery postcrosslinked polymers and hygiene articles
DE10043706A1 (en) 2000-09-04 2002-04-25 Stockhausen Chem Fab Gmbh Powdery, crosslinked, aqueous liquids and blood-absorbing polymers, processes for their preparation and their use
JP3987348B2 (en) * 2001-01-26 2007-10-10 株式会社日本触媒 Manufacturing method of water-absorbing agent
DE60236752D1 (en) 2001-11-21 2010-07-29 Basf Se NETWORKED POLYAMINE COATING ON SUPERABSORBING HYDROGEL
EP1594557B1 (en) 2003-02-10 2019-05-01 Nippon Shokubai Co., Ltd. Water-absorbent resin composition and its production process
PL215419B1 (en) 2003-02-10 2013-12-31 Nippon Catalytic Chem Ind Particulate water-absorbing agent
US7696401B2 (en) * 2003-07-31 2010-04-13 Evonik Stockhausen, Inc. Absorbent materials and absorbent articles incorporating such absorbent materials
EP1518567B1 (en) * 2003-09-25 2017-06-28 The Procter & Gamble Company Absorbent articles comprising fluid acquisition zones with coated superabsorbent particles
DE60320255T2 (en) * 2003-09-25 2009-05-14 The Procter & Gamble Company, Cincinnati Absorbent articles containing superabsorbent polymer particles having a non-covalently bonded coating
SE0303558D0 (en) * 2003-12-30 2003-12-30 Sca Hygiene Prod Ab Absorbent structure and absorbent articles comprising the absorbent structure
WO2005097025A1 (en) * 2004-03-31 2005-10-20 The Procter & Gamble Company Diaper with improved body fit
KR20070007162A (en) * 2004-03-31 2007-01-12 니폰 쇼쿠바이 컴파니 리미티드 An aqueous-liquid-absorbing agent and its production process
TW200639200A (en) * 2005-02-01 2006-11-16 Basf Ag Polyamine-coated superabsorbent polymers
DE602006019603D1 (en) 2005-07-26 2011-02-24 Procter & Gamble FLEXIBLE, ABSORBENT ARTICLE WITH IMPROVED ADJUSTMENT TO THE BODY
US7851669B2 (en) 2005-07-26 2010-12-14 The Procter & Gamble Company Flexible absorbent article with improved body fit
EP1912604A1 (en) * 2005-07-26 2008-04-23 The Procter and Gamble Company Flexible absorbent article with improved body fit
EP2059268A1 (en) * 2006-08-31 2009-05-20 Basf Se Superabsorbent polymers having superior gel integrity, absorption capacity, and permeability

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461621A (en) * 1981-10-19 1984-07-24 Colgate-Palmolive Company Disposable diaper with polymer coating
US4413995A (en) * 1982-05-21 1983-11-08 Personal Products Company Absorbent panel suitable for use in absorbent products
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

Also Published As

Publication number Publication date
JP2000501979A (en) 2000-02-22
AUPN573195A0 (en) 1995-10-26
CA2233992C (en) 2002-04-16
WO1997012575A1 (en) 1997-04-10
EP0855891A1 (en) 1998-08-05
EP0855891A4 (en) 2005-04-20

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Legal Events

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