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    91.
    发明专利
    未知

    公开(公告)号：DE59705081D1

    公开(公告)日：2001-11-29

    申请号：DE59705081

    申请日：1997-02-27

    Applicant: BASF AG

    Inventor： HAEHNLE HANS-JOACHIM ,  WALTER MANFRED ,  TROPSCH JUERGEN ,  KREMESKOETTER JENS ,  SCHORNICK GUNNAR ,  ANSTOCK THOMAS

    IPC: A61F13/00 ,  A61F13/53 ,  A61L15/00 ,  A61L15/16 ,  A61L15/42 ,  A61L15/60 ,  C05G3/80 ,  C08F2/44 ,  C08F2/48 ,  C08F220/06 ,  C08J9/30 ,  C08L33/02

    Abstract: Water-absorbing foamlike crosslinked polymers which are obtainable by(I) foaming a polymerizable aqueous mixture which consists of(a) monoethylenically unsaturated monomers containing acid groups, which are at least 50 mol % neutralized,(b) with or without other monoethylenically unsaturated monomers,(c) crosslinker,(d) initiators,(e) from 0.1 to 20% by weight of at least one surfactant,(f) with or without one or more solubilizers and(g) with or without thickeners, foam stabilizers, polymerization regulators, fillers and/or cell nucleating agents,the foaming being performed by dispersing fine bubbles of a gas inert to free radicals, and(II) polymerizing the foamed mixture with formation of a foamed hydrogel, with or without adjusting the water content of the foamed polymer to from 1 to 60% by weight, processes for their preparation and their use in sanitary articles which are used for absorbing body fluids and in dressing materials for covering wounds are described.

    93.
    发明专利
    未知

    公开(公告)号：DE19909214A1

    公开(公告)日：2000-09-07

    申请号：DE19909214

    申请日：1999-03-03

    Applicant: BASF AG

    Inventor： HAEHNLE HANS-JOACHIM ,  SCHROEDER ULRICH ,  HEIDER WOLFGANG ,  SCHORNICK GUNNAR ,  ANSTOCK THOMAS

    IPC: A61L15/24 ,  A61L15/42 ,  A61L15/60 ,  B01J20/26 ,  C08J9/12 ,  C08J9/30 ,  C09K3/10 ,  C09K17/20 ,  C08J9/20 ,  C09K3/12 ,  C09K17/18 ,  A61F13/15

    Abstract: The invention relates to water-absorbing, cellular, cross-linked polymers which are obtained by the following steps: (I) expanding a polymerizable aqueous mixture which contains (a) monoethylenically unsaturated monomers that contain acidic groups and that are optionally neutralized, (b) optionally other monoethylenically unsaturated monomers, (c) cross-linking agents, (d) initiators, (e) 0.1 to 20 wt.-%. of at least one surfactant, (f) optionally at least one solubilizer and (g) optionally thickeners, foam stabilizers, polymerization controllers, fillers and/or nucleating agents. A gas that is inert vis-à-vis radicals is dissolved in the polymerizable aqueous mixture at a pressure of 2 to 400 bar to expand the mixture and the mixture is then relaxed to atmospheric pressure; (II) polymerizing the expanded mixture while forming a cellular hydrogel and optionally adjusting the water content of the cellular polymer to 1 to 60 wt.-%. The invention further relates to methods for producing water-absorbing, cellular, cross-linked polymers and to the use of said polymers in hygiene articles that are used for absorbing body fluids, in dressings for covering wounds, as sealing material, as soil conditioner, soil substitute and as packaging material.

    98.
    发明专利
    未知

    公开(公告)号：DK0792311T3

    公开(公告)日：1999-09-27

    申请号：DK95937865

    申请日：1995-11-04

    Applicant: BASF AG

    Inventor： KRONER MATTHIAS ,  SCHORNICK GUNNAR ,  WARZELHAN VOLKER ,  SEELIGER URSULA ,  YAMAMOTO MOTONORI ,  B SCHL RAINER

    IPC: C08G63/183 ,  C08G63/60 ,  C08G63/688 ,  C08G63/91 ,  C08J5/00 ,  C08J9/04 ,  C08L67/00 ,  C08L101/16 ,  C09J167/00 ,  D21H19/28

    Abstract: PCT No. PCT/EP95/04335 Sec. 371 Date May 12, 1997 Sec. 102(e) Date May 12, 1997 PCT Filed Nov. 4, 1995 PCT Pub. No. WO96/15175 PCT Pub. Date May 23, 1996A biodegradable polyester obtainable by reacting a mixture comprising (a1) from 95 to 99.9% by weight of a polyester P1 obtainable by reacting a mixture essentially comprising (b1) a mixture comprising 35-95 mol % of adipic acid or ester-forming derivatives thereof, 5-65 mol % of terephthalic acid or ester-forming derivatives thereof, and 0-5 mol % of a compound containing sulfonate groups, and (b2) a dihydroxy compound selected from the group consisting of C2-C6-alkanediols and C5-C10-cycloalkanediols, with the proviso that a compound D with at least three groups capable of ester formation is employed to prepare the polyester P1, (a2) from 0.1 to 5% by weight of a divinyl ether C1 and (a3) from 0 to 5 mol %, based on component (b1) from the preparation of P1, of compound D, and other biodegradable polymers and thermoplastic molding compositions, processes for the preparation thereof, the use thereof for producing biodegradable moldings and adhesives.

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