FI105564B - Superabsorberande polymer med förbättrade absorptionsegenskaper - Google Patents

Superabsorberande polymer med förbättrade absorptionsegenskaper Download PDF

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Publication number
FI105564B
FI105564B FI921640A FI921640A FI105564B FI 105564 B FI105564 B FI 105564B FI 921640 A FI921640 A FI 921640A FI 921640 A FI921640 A FI 921640A FI 105564 B FI105564 B FI 105564B
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FI
Finland
Prior art keywords
polymer
water
acrylic acid
weight
polymer according
Prior art date
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FI921640A
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English (en)
Finnish (fi)
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FI921640A0 (fi
FI921640A (fi
Inventor
Yoji Fujiura
Douglas Ronald Chambers
Jr Hubert Henry Fowler
Fusayoshi Masuda
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Basf Corp
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Application filed by Basf Corp filed Critical Basf Corp
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    • 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
    • C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or 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
    • 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
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/04—Acids; Metal salts or ammonium salts thereof
    • C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof

Claims (13)

1. En superabsorberande polymer, känne-t e c k n a d därav, att den omfattar en sampolymer, vilken är bildad av en akrylsyra, en flerfunktionell 5 monomer och en vattenlöslig hydroxylhaltig polymer, vari den flerfunktionella monomeren innehäller minst 2 eteniskt omättade grupper per molekyl och mängden av densamma är ca. 0,005 - 1,0 mol-% beräknad pä molmäng-den akrylsyra och vari firms 0-10 vikt-% vattenlös-10 lig hydroxylhaltig polymer beräknad pä akrylsyrans och den vattenlösliga polymerens vikt, och vari 50 - 100 % av sampolymerens karboxylsyragrupper är neutraliserade med en basisk vattenlösning och sampolymeren är efter-tvärbunden med en flerfunktionell förening, varav 15 finns ca. 0 - 1,8 mol-% beräknad pä molmängden akrylsyra, varvid den superabsorberande polymerens absor-bans under tryck är minst 30 g/g, äterabsorbtionskapa-citeten minst 40 g/g, elasticitetsmodulen minst 9,0 x 104 dyne/cm2 och äterhämtningsförhällandet är minst 85 20 %.
2. Polymer enligt patentkrav l, känne-t e c k n a d därav, att den flerfunktionella monome-rens eteniskt omättade grupper utgörs av allylgrupper.
3. Polymer enligt patentkrav 2, känne-25 tecknad därav, att den flerfunktionella monome- ren utgörs av tetra-allyloxietan.
4. Polymer enligt patentkrav 3 känne-tecknad därav, att det finns ca. 0,01 - 0,3 mol-% tetra-allyloxietan. 3 0
5. Polymer enligt patentkrav 1, känne- • tecknad därav, att den flerfunktionella monome- • ren är: a) N,Ν'-metylenbisakrylamid, b) trimetylolpropantriakrylat, 35 c) glycerolpropoxitriakrylat eller, d) divinylbenzen. 2i 105564
6. Polymer enligt patentkrav 1, känne- t e c k n a d därav, att den vattenlösliga hydroxyl-haltiga polymeren är en polysackarid.
7. Polymer enligt patentkrav 6, känne- 5 tecknad därav, att polysackariden utgörs av na- turstärkelse.
8. Polymer enligt patentkrav 1, kanne- tecknad därav, att polymerens partikelstorlek är sädan, att 95 vikt-% av partiklarna ligger mellan 20 - 10 140 mesh (US-standardsäll) .
9. Polymer enligt patentkrav 1, känne- tecknad därav, att den ef tertvärbindande fler-funktionella foreningen är en polyglysidyleter av en polyol.
10. Polymer enligt patentkrav 9, känne- tecknad därav, att polyglysidyletern är diglysi-dyleter av dietylenglykol,
11. En absorberande produkt, känne -tecknad därav, att den omfattar en porös fiber- 20 matris, vari polymeren enligt patentkrav 1 är disper-gerad.
12. Absorberande produkt enligt patentkrav 11, kännetecknad därav, att den porösa ma-trisen är placerad mellan ett vätskaogenomsläppligt 25 material och ett vätska genomsläppligt material.
13. Absorberande produkt enligt patentkrav 11, kännetecknad därav, att det f inns 5 -100 vikt-% absorberande polymer beräknat pä fibern.
FI921640A 1991-09-03 1992-04-13 Superabsorberande polymer med förbättrade absorptionsegenskaper FI105564B (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75373791A 1991-09-03 1991-09-03
US75373791 1991-09-03

Publications (3)

Publication Number Publication Date
FI921640A0 FI921640A0 (fi) 1992-04-13
FI921640A FI921640A (fi) 1993-03-04
FI105564B true FI105564B (sv) 2000-09-15

Family

ID=25031925

Family Applications (1)

Application Number Title Priority Date Filing Date
FI921640A FI105564B (sv) 1991-09-03 1992-04-13 Superabsorberande polymer med förbättrade absorptionsegenskaper

Country Status (12)

Country Link
EP (1) EP0530438B1 (sv)
AT (1) ATE148898T1 (sv)
CA (1) CA2065926A1 (sv)
DE (1) DE69217433T2 (sv)
DK (1) DK0530438T3 (sv)
ES (1) ES2097235T3 (sv)
FI (1) FI105564B (sv)
GR (1) GR3022563T3 (sv)
IE (1) IE921183A1 (sv)
MX (1) MX9201734A (sv)
NO (1) NO179590C (sv)
TR (1) TR26455A (sv)

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