FI109912B - Förfarande för hydrofilisering av absorberande skummaterial - Google Patents

Förfarande för hydrofilisering av absorberande skummaterial Download PDF

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Publication number
FI109912B
FI109912B FI940648A FI940648A FI109912B FI 109912 B FI109912 B FI 109912B FI 940648 A FI940648 A FI 940648A FI 940648 A FI940648 A FI 940648A FI 109912 B FI109912 B FI 109912B
Authority
FI
Finland
Prior art keywords
foam
foam material
surfactant
water
hydrophilizing
Prior art date
Application number
FI940648A
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English (en)
Finnish (fi)
Other versions
FI940648A0 (sv
FI940648A (sv
Inventor
Thomas Allen Desmarais
Original Assignee
Procter & Gamble
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Publication date
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Publication of FI940648A0 publication Critical patent/FI940648A0/sv
Publication of FI940648A publication Critical patent/FI940648A/sv
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Publication of FI109912B publication Critical patent/FI109912B/sv

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    • 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
    • C08J9/36—After-treatment
    • C08J9/40—Impregnation
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    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F13/00—Bandages or dressings; Absorbent pads
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    • 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
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    • 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
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    • A61L15/18—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
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    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
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    • A61L15/42—Use of materials characterised by their function or physical properties
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    • 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
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    • 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
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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Hematology (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Treating Waste Gases (AREA)
  • Saccharide Compounds (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Claims (8)

1. Förfarande för att göra ett väsentligen hydro- fobiskt polymerskummaterial lämpligt för absorbering av | 5 hydrofiliska vätskor genom att införliva ett i vatten | olösligt ytaktivt medel i polymerskummaterialet, varvid nämnda polymerskummaterial är ett polymeriserat skum av typen vatten-i-oljaemulsion som omfattar polymeriserade monomerer, vilka är styren, alkyl(met)akrylater, divinyl- 10 bensen och blandningar av dessa, och det är i hydrofobiskt tillständ väsentligen fritt frän tillsatta eller kvarbliv- na hydrofiliserande medel, kännetecknat av att för- farandet dessutom innehäller steg, där: A) nämnda polymerskummaterial tvättas med en lös- 15 ning, som innehäller ett lösningsmedel och ett hydrofili- serande saltmedel, som valts frän hydratiserade eller hyd- ratiserbara kalcium- eller magnesiumsalter, varvid det yt- aktiva medlet inte är sorbitanmonolaurat, när det hydrofi- liserande medlet bestär av kalciumsalter, _ # 20 B) därefter torkas nämnda polymerskummaterial för ·* * att avlägsna lösningsmedlet frän detta och sälunda blir · ätminstone 0,05 vikt-% av det ytaktiva medlet och det hyd-rofiliserande medlet kvar i polymerskummaterialet väsent- • i » : ligen jämnt fördelat. ·;· 25
2. Förfarande enligt patentkrav 1, känne- • t * * tecknat av att det ytaktiva medlet valts frän en grupp som omfattar sorbitanfettsyraestrar, polyglycerol- ; fettsyraestrar och polyoxietylenfettsyror och -estrar, och • * · det hydrof iliserande medlet har valts frän en grupp som *;* 30 omfattar kalciumhalider, magnesiumhalider och blandningar ' ’.· av dessa. •
3. Förfarande enligt patentkrav 1 eller 2, kän-ne tecknat av att vatten-i-oljaemulsionen omfattar en • * vattenfas och en oljefas och förfarandet innehäller dess- ·* 35 utom ett steg, där: 10991? 4 5 det i vatten olösliga ytaktiva medlet införlivas i nämnda oljefas och en saltlösning av det hydrofiliserande medlet införlivas i nämnda vattenfas, vilken saltlösning bestär av ett lösningsmedel och ett däri upplöst hydrofi-5 liserande saltmedel, som valts frän en grupp som omfattar hydratiserade och hydratiserbara kalcium- och magnesium-salter.
4. Förfarande enligt patentkrav 3, känne-tecknat av att vattenfasen innehäller 1-10 vikt-% 10 kalciumklorid och oljefasen innehäller nämnda polymeriser-bara monomerer och 0,5 - 20 vikt-% av nämnda polymeriser-bara monomerer beräknat pä det ytaktiva medlet, som valts frän en grupp som omfattar sorbitanmonolaurat och en blandning av sorbitanmonooleat och sorbitan-trioleat, och 15 varvid nämnda skummaterial inte innehäller över 50 vikt-% fritt vatten av nämnda skummaterial.
5. Hydrofiliserat polymerskummaterial som fram-ställts med förfarandet enligt patentkrav 1, vilket material är lämpligt för absorbering av hydrofiliska vätskor, 20 kännetecknat av att det innehäller ett poly-V. merskummaterial som, när det är väsentligen fritt frän tillsatta eller kvarblivna hydrof iliserande medel, är hyd-rofobiskt; nämnda skum innehäller ätminstone 0,05 • · ;;;* vikt-%, beräknat pä nämnda skummaterial, av en blandning • · *·.·* 25 av ett väsentligen i vatten olösligt ytaktivt medel och ett hydrof iliserande saltmedel, som väljs frän en grupp V · som omfattar hydratiserade och hydratiserbara kalcium- och magnesiumsalter, som ingär väsentligen jämnt fördelat i nämnda skummaterial; och högst 50 vikt-%, beräknat pä 30 nämnda skummaterial, fritt vatten som ingär i nämnda skummaterial; och varvid det ytaktiva medlet i skummaterialet I I • '* inte är sorbitanmonolaurat, när nämnda hydrofiliserande » · medel omfattar kalciumsalter.
6. Hydrofiliserat polymerskummaterial enligt pa-35 tentkrav 5, kännetecknat av att det ytaktiva medlet har valts frän en grupp som omfattar sorbitan- 46 109912 i t j fettsyraestrar, polyglycerolfettsyraestrar och polyoxi-etylenfettsyror och -estrar, och det hydrofiliserande saltmedlet har valts frän en grupp som omfattar kalciumha-lider, magnesiumhalider och blandningar av dessa.
7. Hydrofiliserat polymerskummaterial enligt pa- tentkrav 5 eller 6, kännetecknat av att mängden ytaktivt medel som ingär i skummaterialet är i omrädet 0,5 - 20 vikt-% av skummaterialet, när det ytaktiva medlet har valts frän en grupp som omfattar sorbitanmonolaurat 10 och en blandning av sorbitanmonooleat och sorbitantriole-at; mängden hydrofiliserande saltmedlet som ingär i skummaterialet är i omrädet 0,1-7 vikt-% av skummaterialet; mängden fritt vatten som ingär i skummaterialet omfattar högst 10 vikt-% av skummaterialet; de hydrofiliserande 15 saltmedlen är helt hydratiserade.
8. Hydrofiliserat polymerskummaterial enligt nägot av patentkraven 5 - 7, kännetecknat av att poly-merskummaterialet är ett polymeriserat skum av typen vat-ten-i-oljaemulsion, som omfattar polymeriserade monomerer, 20 vilka valts frän en grupp som omfattar styren, ·,·, alkyl (met) akrylater, divinylbensen och blandningar av des- • · . sa monomerer. t · · • « · · • · • · « • · · * · * 25 • < · * « I · * · · « · t t · · t · I » · t I · » I < · t I · • t I · • * · tit I t » · > I · > I » * * % · it* < · * » I I I %
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US07/743,951 US5352711A (en) 1991-08-12 1991-08-12 Method for hydrophilizing absorbent foam materials
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HU9400402D0 (en) 1994-05-30
DE69230257D1 (de) 1999-12-09
EP0598824B1 (en) 1999-11-03
AU2465392A (en) 1993-03-16
CN1041316C (zh) 1998-12-23
ES2137193T3 (es) 1999-12-16
KR100226397B1 (ko) 1999-10-15
PT100771B (pt) 1999-07-30
PT100771A (pt) 1993-10-29
CA2114105A1 (en) 1993-03-04
PL170804B1 (pl) 1997-01-31
GR3031756T3 (en) 2000-02-29
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EG19782A (en) 1996-01-31
JP3385022B2 (ja) 2003-03-10
US5352711A (en) 1994-10-04
BR9206362A (pt) 1994-12-13
MX9204674A (es) 1993-03-01
WO1993004113A1 (en) 1993-03-04
FI940648A0 (sv) 1994-02-11
MA22615A1 (fr) 1992-08-20
JPH06510806A (ja) 1994-12-01
NO940453L (no) 1994-04-12
TW369416B (en) 1999-09-11
AU671420B2 (en) 1996-08-29
DK0598824T3 (da) 2000-01-03
CZ291969B6 (cs) 2003-06-18
TR26327A (tr) 1995-03-15
HU215569B (hu) 1999-01-28
DE69230257T2 (de) 2000-05-18
CN1070924A (zh) 1993-04-14
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HK1013089A1 (en) 1999-08-13
FI940648A (sv) 1994-02-11
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ATE186313T1 (de) 1999-11-15
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CZ27994A3 (en) 1994-07-13

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