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    WASCHBARE, VISKOELASTISCHE POLYURETHANWEICHSCHAUMSTOFFE
    1.
    发明公开
    WASCHBARE, VISKOELASTISCHE POLYURETHANWEICHSCHAUMSTOFFE 有权
    耐水洗，粘弹性软质聚氨酯泡沫塑料

    公开(公告)号：EP2785775A1

    公开(公告)日：2014-10-08

    申请号：EP12791188.1

    申请日：2012-11-27

    Applicant: BASF SE

    Inventor： MARTIN, Marc ,  LUTTER, Heinz-Dieter ,  VARDING, Jens ,  FRERICKS, Ansgar ,  STADLER, Edmund

    IPC: C08J9/00 ,  C08G18/28 ,  C08G18/48

    CPC classification number: C08G18/2835 ,  C08G18/4812 ,  C08G18/6677 ,  C08G2101/0008 ,  C08G2101/005 ,  C08G2101/0058 ,  C08G2101/0083

    Abstract: The present invention relates to a process for producing viscoelastic flexible polyurethane foams having an air flow value of at least 1 dm
    3 /s, which comprises (a) polyisocyanate being mixed with (b) polymeric compounds having isocyanate-reactive groups, (c) optionally chain-extending and/or crosslinking agents, (d) optionally compounds having only one isocyanate-reactive group with a hydroxyl number of 100 to 500 mg KOH/g, (e) catalyst, (f) blowing agent, and also optionally (g) addition agents to form a reaction mixture and convert it into flexible polyurethane foam, wherein the polymeric compounds having isocyanate-reactive groups (b) comprise 10 to 40 wt% of at least one polyalkylene oxide (b1) having a hydroxyl number of 90 to 300 mg KOH/g, based on a 3 to 6-functional starter molecule and a propylene oxide fraction, based on the alkylene oxide content, of 80 to 100 wt%, 5 to 20 wt% of at least one polyalkylene oxide (b2) having a hydroxyl number of 10 to 60 mg KOH/g, based on a 2 to 4-functional starter molecule and a propylene oxide fraction, based on the alkylene oxide content, of 80 to 100 wt%, 10 to 50 wt% of at least one polyalkylene oxide (b3) having a hydroxyl number of 10 to 55 mg KOH/g, based on a 2 to 4-functional starter molecule and an ethylene oxide fraction, based on the alkylene oxide content, of 70 to 100 wt%, and 0 to 20 wt% of at least one polyalkylene oxide (b4) having a hydroxyl number of 50 to 200 mg KOH/g, based on a 2-functional starter molecule and an ethylene oxide fraction, based on the alkylene oxide content, of 80 to 100 wt%, and wherein the fraction of compounds b1) to b4), based on the total weight of polymeric compounds having isocyanate-reactive groups (b), is at least 80 wt%. The present invention further relates to a viscoelastic polyurethane foam having an air flow value of at least 1 dm
    3 /s, which is obtainable by such a process, and to the use of such a polyurethane foam for mattresses and cushions.

    VERFAHREN ZUR HERSTELLUNG VON VISKOELASTISCHEN POLYURETHAN-WEICHSCHAUMSTOFFEN
    4.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON VISKOELASTISCHEN POLYURETHAN-WEICHSCHAUMSTOFFEN 有权
    用于生产粘弹性软质聚氨酯泡沫

    公开(公告)号：EP2350157A1

    公开(公告)日：2011-08-03

    申请号：EP09736948.2

    申请日：2009-10-19

    Applicant: BASF SE

    Inventor： FRERICKS, Ansgar ,  LUTTER, Heinz-Dieter ,  STADLER, Edmund ,  SCHRÖDER, Heinz-Jürgen ,  SIMON, Kirsten ,  MEYER, Andre ,  POMERIS, Franck

    IPC: C08G18/36 ,  C08G18/48 ,  C08G18/50 ,  C08G18/66

    CPC classification number: C08G18/36 ,  C08G18/482 ,  C08G18/5021 ,  C08G18/6696 ,  C08G2101/0008 ,  C08G2101/0083 ,  C08G2350/00

    Abstract: the invention relates to a method for producing viscoelastic polyurethane flexible foams by reacting a) polyisocyanates with b) compounds with at least two hydrogen atoms which are reactive with isocyanate groups, characterised in that eh compounds with at least two hydrogen atoms which are reactive with isocyanate groups are a mixture of bi) 25 to70 wt. %, relative to the weight of components bi), bii), biii) and biv) of a natural oil or fat containing hydroxy groups, or a reaction product of a natural oil or fat containing hydroxy groups with alkylene oxide, bii) 3 to 30 wt. %, relative to the weight of components bi), bii), biii) and biv), of at least one polyether alcohol with a hydroxy number of 100 to 800 mg KOH/g and a functionality of 3 to 5, selected from the group of polyether alcohols produced by addition of an alkylene oxide to an amine, biii) 20 to 50 wt. % relative to the weight of components bi), bii), biii) and biv), of at least one polyether alcohol with a hydroxy number of 10 to 80 mg KOH/g and a functionality of 2 to 5, which may be produced by addition of ethylene oxide and propylene oxide to H-functional starting materials, wherein the proportion of ethylene oxide is 5- 25 wt. %, based on the weight of the polyether alcohol, wherein at least a part of the ethylene oxide is added to the end of the polyether chain, biv) >0 - 8 wt. %, relative to the weight of components bi), bii), biii) end biv), of at least one polyether alcohol with a functionality of 2 to 4, a hydroxy number of 15-60 mg KOH/g and an ethylene oxide content of >50 wt. %, based on the weight of the polyether alcohol.

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