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    POLYURETHANE FOAMS WITH REDUCED AROMATIC AMINE CONTENT
    4.
    发明申请
    POLYURETHANE FOAMS WITH REDUCED AROMATIC AMINE CONTENT 有权

    公开(公告)号：US20210395431A1

    公开(公告)日：2021-12-23

    申请号：US17288026

    申请日：2019-10-23

    申请人： BASF SE

    发明人： Markus Schuette ,  Heinz-Dieter Lutter ,  Manuela Faehmel ,  Marc Claude Martin ,  Peter Deglmann ,  Joern Duwenhorst

    IPC分类号： C08G18/08 ,  C08G18/38 ,  C08G18/24 ,  C08G18/16 ,  C08G18/18 ,  C08G18/20 ,  C08G18/48

    摘要： Described herein is a process for producing polyurethane foams having a density of 30 g/dm3 to 70 g/dm3, in which (a) aromatic polyisocyanate is mixed with (b) polymeric compounds having isocyanate-reactive groups, (c) optionally chain extender and/or crosslinking agent, (d) catalyst, (e) blowing agent including water, (f) 0.1% to 5% by weight of lactam, and (g) optionally additives, at an isocyanate index of 50 to 95 to form a reaction mixture, and the reaction mixture is converted to the polyurethane foam, wherein the catalyst includes metal catalyst and amine catalyst, and the amine catalyst has tertiary nitrogen atoms and the content of tertiary nitrogen atoms in the amine catalyst is from 0.0001 to 0.003 mol/100 g of foam. Also described herein is a polyurethane foam and a method of using such a flexible polyurethane foam for the production of cushions, seat cushions, or mattresses.

    VISCOELASTIC FOAMS HAVING HIGH DENSITY
    5.
    发明申请
    VISCOELASTIC FOAMS HAVING HIGH DENSITY 审中-公开

    公开(公告)号：US20200181315A1

    公开(公告)日：2020-06-11

    申请号：US16300693

    申请日：2017-05-02

    申请人： BASF SE

    发明人： Udo Hadick ,  Heinz-Dieter Lutter ,  Stefanie Hiller ,  Maike Grever

    IPC分类号： C08G18/10 ,  C08G18/18 ,  C08G18/08 ,  C08J9/12 ,  C08G18/48 ,  C08G18/32 ,  C08G18/76 ,  C08G18/79

    摘要： Provided herein is a process for producing viscoelastic polyurethane foams having a density of from 100 g/dm3 to 300 g/dm3, in which (a) polyisocyanate is mixed with (b) polymeric compounds having groups that are reactive toward isocyanates, (d) a catalyst, and (e) a blowing agent including water at an isocyanate index of from 50 to 95 to give a reaction mixture. The reaction mixture is placed in a mold and reacted to give the flexible polyurethane foam, wherein the polyisocyanate (a) is obtainable by mixing 4,4′-MDI and oligomers of propylene oxide having from 2 to 8 propylene oxide units. The polymeric compounds (b) include at least one polyalkylene oxide having a hydroxyl number of from 20 to 50 mg KOH/g derived from a trifunctional starter molecule and a proportion of ethylene oxide, based on the content of alkylene oxide, of from 0 to 10%.