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    Procedimiento para la preparación de espumas duras de poliuretano
    45.
    发明专利
    Procedimiento para la preparación de espumas duras de poliuretano 未知

    公开(公告)号：ES2443313T3

    公开(公告)日：2014-02-18

    申请号：ES10757196

    申请日：2010-09-22

    Applicant: BASF SE

    Inventor： GIESKER CHRISTIANE ,  KLASSEN JOHANN ,  SEIFERT HOLGER ,  SCHUETTE MARKUS

    IPC: C08G18/36 ,  C08G18/48 ,  C08G18/66 ,  C08G101/00

    Abstract: Procedimiento para la preparación de espumas duras de poliuretano mediante reacción de a) poliisocianatos con b) compuestos con al menos dos átomos de hidrógeno reactivos con grupos isocianato en presencia de c) agentes de expansión, caracterizado porque el componente b) contiene aceite de ricino bi), la reacción se realiza en presencia de uncompuesto d) seleccionado del grupo que contiene carbonatos de alquileno, amidas de ácido carbónico ypirrolidonas, como agente de expansión se usa total o predominantemente agua y en el procedimiento no se usanagentes ignífugos que contienen halógeno.

    METHOD FOR PRODUCING POLYURETHANE HARD FOAM MATERIALS
    46.
    发明专利
    METHOD FOR PRODUCING POLYURETHANE HARD FOAM MATERIALS 未知

    公开(公告)号：SG183358A1

    公开(公告)日：2012-09-27

    申请号：SG2012060919

    申请日：2011-02-22

    Applicant: BASF SE

    Inventor： ELING BEREND ,  SCHUETTE MARKUS ,  ZARBAKHSH SIRUS ,  SEIFERT HOLGER ,  KAMPF GUNNAR

    Abstract: 22Method for producing polyurethane hard foam materialsAbstract5 The invention relates to a process for preparing rigid polyurethane foams, which comprises reactinga) polyisocyanates withto b) compounds having at least two hydrogen atoms reactive with isocyanategroups In the presence ofc) blowing agents,15 wherein said compounds having at least two hydrogen atoms reactive with isocyanate groups b) comprise at least one polyether alcbhol b1) having a functionality of 2-8 anda hydroxyl number of 200-800 mgKOH/g, obtained by addition of an alkylene oxide bib) onto a compound having at least two hydrogen atoms b1a), hereinafter also known as starter substances, reactive with alkylene oxides by using an amine b1c) as20 catalyst. No suitable figure

    49.
    发明专利
    未知

    公开(公告)号：AT475681T

    公开(公告)日：2010-08-15

    申请号：AT08701336

    申请日：2008-01-09

    Applicant: BASF SE

    Inventor： SEIFERT HOLGER ,  KLASSEN JOHANN ,  DU RIEU LOUIS ,  WIEGMANN WERNER ,  MATZKE GUENTER

    IPC: C08G18/76 ,  C07C263/00

    Abstract: The invention relates to rigid polyurethane foams which can be produced by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reacted toward isocyanate groups in the presence of c) blowing agents, wherein the polyisocyanate a) used is a mixture of diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates comprising a1) 30-35% by weight of diphenylmethane diisocyanate, a2) 21-28% by weight of polyphenylenepolymethylene polyisocyanate having three aromatic rings, a3) 8-13% by weight of polyphenylenepolymethylene polyisocyanate having four aromatic rings, a4) 24-41% by weight of polyphenylenepolymethylene polyisocyanate having five or more aromatic rings, where the percentages by weight of the components a1) to a4) are based on the total weight of the components a1) to a4) and add up to 100% by weight.

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