GB2347675A - Absorbent foam - Google Patents

Absorbent foam

Info

Publication number
GB2347675A
GB2347675A GB0015476A GB0015476A GB2347675A GB 2347675 A GB2347675 A GB 2347675A GB 0015476 A GB0015476 A GB 0015476A GB 0015476 A GB0015476 A GB 0015476A GB 2347675 A GB2347675 A GB 2347675A
Authority
GB
United Kingdom
Prior art keywords
absorbent foam
absorbent
foam
water
microns
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
GB0015476A
Other versions
GB0015476D0 (en
GB2347675B (en
Inventor
Jian Qin
Palani Raj Ramaswam Wallajapet
Gary D Williams
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.)
Kimberly Clark Worldwide Inc
Kimberly Clark Corp
Original Assignee
Kimberly Clark Worldwide Inc
Kimberly Clark 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
Priority claimed from US08/977,918 external-priority patent/US5985434A/en
Priority claimed from US08/978,263 external-priority patent/US5948829A/en
Application filed by Kimberly Clark Worldwide Inc, Kimberly Clark Corp filed Critical Kimberly Clark Worldwide Inc
Publication of GB0015476D0 publication Critical patent/GB0015476D0/en
Publication of GB2347675A publication Critical patent/GB2347675A/en
Application granted granted Critical
Publication of GB2347675B publication Critical patent/GB2347675B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • 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
    • 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
    • A61L15/425—Porous materials, e.g. foams or sponges
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/052—Inducing phase separation by thermal treatment, e.g. cooling a solution
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Hematology (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Disclosed is an absorbent foam that exhibits desirable softness and flexibility properties yet is highly absorbent. In one embodiment, the absorbent foam comprises a water-swellable, water-insoluble polymer wherein the absorbent foam exhibits a Free Swell value of at least about 10 grams of liquid per gram of absorbent foam and a Softness value that is less than about 30 grams of force per gram per square meter of absorbent foam. In a second embodiment, the absorbent foam has an average cell size of the cells in the absorbent foam between about 10 microns to about 100 microns and an average wall thickness of the cells in the absorbent foam between about 0.1 micron to about 30 microns. Such an absorbent foam may be used in a disposable absorbent product intended for the absorption of fluids such as body fluids. Also disclosed is a process for preparing an absorbent foam. The process generally comprises forming a solution of a polymer in a solvent, freezing the solution at a relatively slow cooling rate to a temperature below the freezing point of the solvent, removing the solvent from the frozen solution, and recovering the polymer to form a water-swellable, water-insoluble polymeric foam.
GB0015476A 1997-11-25 1998-11-25 Absorbent foam Expired - Fee Related GB2347675B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/977,918 US5985434A (en) 1997-11-25 1997-11-25 Absorbent foam
US08/978,263 US5948829A (en) 1997-11-25 1997-11-25 Process for preparing an absorbent foam
PCT/US1998/024919 WO1999026670A1 (en) 1997-11-25 1998-11-25 Absorbent foam

Publications (3)

Publication Number Publication Date
GB0015476D0 GB0015476D0 (en) 2000-08-16
GB2347675A true GB2347675A (en) 2000-09-13
GB2347675B GB2347675B (en) 2002-06-05

Family

ID=27130597

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0015476A Expired - Fee Related GB2347675B (en) 1997-11-25 1998-11-25 Absorbent foam

Country Status (9)

Country Link
KR (1) KR100552032B1 (en)
AR (1) AR017661A1 (en)
AU (1) AU1421399A (en)
BR (1) BR9815033A (en)
CO (1) CO5070628A1 (en)
DE (1) DE19882845T1 (en)
GB (1) GB2347675B (en)
MX (1) MX229331B (en)
WO (1) WO1999026670A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10055084A1 (en) 2000-11-07 2002-06-13 Basf Ag Flexible, open-celled, microcellular polymer foams
US7053131B2 (en) 2002-12-03 2006-05-30 Kimberly-Clark Worldwide, Inc. Absorbent articles comprising supercritical fluid treated HIPE, I-HIPE foams and other foams
KR100722293B1 (en) * 2004-02-18 2007-05-28 주식회사 바이오폴리텍 Preparation of chito foam dressing for wound repair
MX2010001629A (en) * 2007-08-10 2010-08-09 Alessandro Sannino Polymer hydrogels and methods of preparation thereof.
EP2163266A1 (en) * 2008-09-12 2010-03-17 The Procter & Gamble Absorbent article comprising water-absorbing material
CA2838006C (en) 2011-06-07 2020-06-02 Gelesis Ip, Lp Method for producing hydrogels
CN115381850A (en) 2014-06-20 2022-11-25 吉莱斯公司 Method for treating overweight or obesity
MX2017009805A (en) 2015-01-29 2018-05-07 Gelesis Llc Method for producing hydrogels coupling high elastic modulus and absorbance.
US10729600B2 (en) 2015-06-30 2020-08-04 The Procter & Gamble Company Absorbent structure
US11376168B2 (en) 2015-11-04 2022-07-05 The Procter & Gamble Company Absorbent article with absorbent structure having anisotropic rigidity
BR112018009086A8 (en) * 2015-11-04 2019-02-26 Procter & Gamble thin and flexible absorbent articles
WO2017079599A1 (en) 2015-11-04 2017-05-11 The Procter & Gamble Company Absorbent structure
AU2017257494B2 (en) 2016-04-25 2022-12-01 Gelesis, Llc. Method for treating constipation
CN113929819B (en) * 2021-11-11 2024-01-09 军事科学院军事医学研究院环境医学与作业医学研究所 Chitosan polyacrylamide composite porous hydrogel, metal ion detection reagent, and preparation method and application thereof
KR102485144B1 (en) * 2022-03-16 2023-01-06 주식회사 큐에이치바이오 Dermal filler composition containing hyaluronic acid and method for manufacturing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280079A (en) * 1986-11-20 1994-01-18 Allied Colloids Limited Absorbent products and their manufacture
US5494940A (en) * 1991-12-20 1996-02-27 Alliedsignal Inc. Low density materials having high surface areas and articles formed therefrom

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5280079A (en) * 1986-11-20 1994-01-18 Allied Colloids Limited Absorbent products and their manufacture
US5494940A (en) * 1991-12-20 1996-02-27 Alliedsignal Inc. Low density materials having high surface areas and articles formed therefrom

Also Published As

Publication number Publication date
BR9815033A (en) 2000-10-03
DE19882845T1 (en) 2001-06-21
GB0015476D0 (en) 2000-08-16
AU1421399A (en) 1999-06-15
KR100552032B1 (en) 2006-02-20
CO5070628A1 (en) 2001-08-28
MX229331B (en) 2005-07-21
GB2347675B (en) 2002-06-05
WO1999026670A1 (en) 1999-06-03
KR20010032398A (en) 2001-04-16
AR017661A1 (en) 2001-09-12
MXPA00005002A (en) 2000-11-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20101125