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    VERFAHREN ZUR REDUZIERUNG DER SCHAUMBILDUNG BEIM BEHANDELN EINER DISPERSION ODER FLÜSSIGKEIT MIT WASSERDAMPF
    1.
    发明授权
    VERFAHREN ZUR REDUZIERUNG DER SCHAUMBILDUNG BEIM BEHANDELN EINER DISPERSION ODER FLÜSSIGKEIT MIT WASSERDAMPF 有权
    一种用于减少起泡在治疗分散或液态水VAPOR

    公开(公告)号：EP1009509B1

    公开(公告)日：2002-01-16

    申请号：EP98941420.6

    申请日：1998-08-14

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： HÜBINGER, Wolfgang ,  HOLTRUP, Walter ,  HEIDER, Wolfgang

    IPC分类号： B01D19/02 ,  B01D3/38

    CPC分类号： C08F6/003 ,  B01D19/02

    摘要： The invention relates to a method for reducing the formation of foam during the treatment of a dispersion or a liquid with water vapour by a) introducing water vapour to the foot of a column whilst feeding in a medium at the head of the column so that the water vapour rises to the head of the column and b) bringing the medium into contact with the water vapour, whereby foam is produced. The medium which is fed into the head of the column in a) is produced by mixing a dispersion or a liquid with water vapour in an apparatus. The medium therefore has a higher temperature than the water vapour with which it comes into contact when it is fed into the head of the column in b).

    WASSERABSORBIERENDE, SCHAUMFÖRMIGE, VERNETZTE POLYMERISATE, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG
    4.
    发明公开
    WASSERABSORBIERENDE, SCHAUMFÖRMIGE, VERNETZTE POLYMERISATE, VERFAHREN ZU IHRER HERSTELLUNG UND IHRE VERWENDUNG 有权
    吸水，膨胀，交联聚合物，其制造方法相同，它们的用途

    公开(公告)号：EP1059947A1

    公开(公告)日：2000-12-20

    申请号：EP99913215.2

    申请日：1999-03-03

    申请人： BASF AKTIENGESELLSCHAFT

    发明人： HÄHNLE, Hans-Joachim ,  SCHRÖDER, Ulrich ,  BECK, Martin ,  HEIDER, Wolfgang ,  SCHORNICK, Gunnar ,  ANSTOCK, Thomas

    IPC分类号： A61L15/60 ,  C08J9/30

    CPC分类号： C08J9/30 ,  A61L15/425 ,  A61L15/60 ,  C08J2300/14

    摘要： The invention relates to water-absorbing, cross-linked polymerizates which are in the form of a foam and which can be obtained by (I) foaming a polymerizable aqueous mixture which contains: (a) acid groups containing monoethylenically unsaturated monomers which are optionally neutralized; (b) optional other monoethylenically unsaturated monomers; (c) cross-linking agents; (d) initiators; (e) 0.1 to 20 wt. % of at least one surface active agent; (f) optionally at least one dissolving mediator; and (g) optional thickeners, foam stabilizers, polymerization chain transfer agents, fillers and/or cell nucleating agents. Fine bubbles of a gas which is inert against radicals causes foaming by dispersion in the polymerizable aqueous mixture. The inventive polymerizates can also be obtained by (II) polymerizing the foamed mixture by forming a hydrogel which is in the form of a foam, whereby at least 20 mol % of the monomers (a) containing acid groups are neutralized with tertiary alkanolamines and/or the free acid groups of the hydrogel in the form of a foam are neutralized with at least one alkanolamine to at least 20 mol % after the polymerization, and the water content of the polymerizate which is in the form of a foam is set at 1 to 60 wt. %. The invention additionally relates to a method for producing the inventive polymerizates and to the utilization thereof in sanitary articles which are used for absorbing body fluids and in bandaging material used for covering wounds.