91.
    发明专利
    未知

    公开(公告)号:DE102004013408A1

    公开(公告)日:2005-10-06

    申请号:DE102004013408

    申请日:2004-03-18

    Applicant: BASF AG

    Abstract: The invention relates to polyether alcohols, to a process for preparing polyether alcohols by reacting alkylene oxides in the presence of a double metal cyanide (DMC) catalyst with at least one saturated OH component which may, if appropriate, have previously been reacted with an alkylene oxide, wherein an antioxidant is added before or during the reaction, and also to the further processing of the polyether alcohols to form polyurethanes.

    PROCEDIMIENTO PARA LA OBTENCION DE PLASTICOS CELULARES RIGIDOS DE POLIURETANO CON UNA DENSIDAD BRUTA REDUCIDA.

    公开(公告)号:ES2227734T3

    公开(公告)日:2005-04-01

    申请号:ES98103629

    申请日:1998-03-02

    Applicant: BASF AG

    Abstract: ES OBJETO DE LA PRESENTE INVENCION UN PROCEDIMIENTO PARA LA PRODUCCION DE ESPUMAS RIGIDAS DE POLIURETANO CON MENOR DENSIDAD APARENTE MEDIANTE LA REACCION DE A) POLIISOCIANATOS ORGANICOS Y/O MODIFICADOS CON B) AL MENOS UN COMPUESTO DE ELEVADO PESO MOLECULAR CON AL MENOS DOS ATOMOS DE HIDROGENO REACTIVOS Y OPCIONALMENTE, C) ALARGADORES DE CADENA DE BAJO PESO MOLECULAR Y/O RETICULANTES EN PRESENCIA DE D) POROGENOS, E) CATALIZADORES, ASI COMO OPCIONALMENTE F)) OTROS COADYUVANTES Y/O ADITIVOS, QUE SE CARACTERIZA PORQUE COMO POROGENO SE UTILIZA D) UNA MEZCLA DE CICLOPENTANO, AL MENOS UN COMPUESTO QUE SE PUEDA MEZCLAR DE FORMA HOMOGENEA CON CICLOPENTANO DEL GRUPO DE LOS ALCANOS Y/O ALQUENOS CON 3 O 4 ATOMOS DE CARBONO EN LA MOLECULA Y EL DIOXIDO DE CARBONO ORIGINADO A PARTIR DEL AGUA Y DEL ISOCIANATO Y COMO COMPUESTO DE ELEVADO PESO MOLECULAR POLIETERES AROMATICOS Y CON NITROGENO CON AL MENOS DOS ATOMOS DE HIDROGENO REACTIVOS (B). ASIMISMO ES OBJETO DE LA INVENCION EL USO DE LAS ESPUMAS RIGIDAS ASI PRODUCIDAS COMO MATERIAL AISLANTE.

    94.
    发明专利
    未知

    公开(公告)号:PT1259561E

    公开(公告)日:2004-12-31

    申请号:PT01925342

    申请日:2001-02-20

    Applicant: BASF AG

    Abstract: A process for preparing polyether polyols includes a precipitation step, a recrystallization step, and a reaction step. In the precipitation step, a multimetal cyanide compound is precipitated by reaction of a metal salt with a cyanometalate compound. In the recrystallization step, the multimetal cyanide compound precipitated above is recrystallized by adding further metal salt and/or further cyanometalate compound. The recrystallization forms a multimetal cyanide catalyst compound. In the reaction step, an initiator and one or more alkylene oxide are reacted in the presence of the multimetal cyanide catalyst compound.

    95.
    发明专利
    未知

    公开(公告)号:DE10240186A1

    公开(公告)日:2004-03-11

    申请号:DE10240186

    申请日:2002-08-28

    Applicant: BASF AG

    Abstract: The present invention provides a process for producing low-emission flexible polyurethane foams having a reduced odor and reduced fogging by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups, c) blowing agents wherein polyether alcohols which have been prepared by addition of alkylene oxides onto compounds derived from renewable raw materials using DMC catalysts are used as compounds b) having at least two hydrogen atoms which are reactive toward isocyanate groups.

    96.
    发明专利
    未知

    公开(公告)号:DE10226415A1

    公开(公告)日:2003-12-24

    申请号:DE10226415

    申请日:2002-06-13

    Applicant: BASF AG

    Abstract: The invention relates to a method for producing polyether alcohols, comprising the following steps: a) reacting a low-molecular alcohol with alkylene oxide in the presence of a basic catalyst in order to form an alkylene oxide addition product having a molecular weight ranging from 200 to 900 g/mol; b) separating the basic catalyst from the product obtained in step a), and; c) reacting the product obtained in step b) with another alkylene oxide in order to produce the desired final product while using at least one DMC catalyst. The inventive method is characterized in that sodium hydroxide is used as the basic catalyst in step a).

    ALCOHOLES POLIETER.
    98.
    发明专利

    公开(公告)号:MXPA02001957A

    公开(公告)日:2002-08-20

    申请号:MXPA02001957

    申请日:2000-08-23

    Applicant: BASF AG

    Inventor: BAUM EVA

    Abstract: En un proceso para preparar alcoholes polieter por adicion catalitica de oxido de etileno y oxido de propileno sobre substancias iniciadoras H-funcionales, al menos un compuesto de cianuro multimetalico se usa como catalizador y un bloque de un oxido de alquileno que tiene al menos tres atomos de carbono en la molecula se agrega en el extremo de la cadena.

Patent Agency Ranking