171.
    发明专利
    未知

    公开(公告)号:DE102005032541A1

    公开(公告)日:2007-01-18

    申请号:DE102005032541

    申请日:2005-07-12

    Applicant: BASF AG

    Abstract: The present application relates to a process for reacting a composition I comprising at least one aldehyde with hydrogen in the presence of a catalyst in at least one main reactor and at least one postreactor, wherein at least 50% of the fresh hydrogen fed to the reaction system is fed into at least one postreactor. In a preferred embodiment, composition I comprises at least one further organic compound.

    PROCEDIMIENTO PARA LA OBTENCION DE COPOLIMEROS DE TETRAHIDROFURANO.

    公开(公告)号:ES2263071T3

    公开(公告)日:2006-12-01

    申请号:ES03813127

    申请日:2003-12-16

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención en una sola etapa de polioxialquilenglicoles con un peso molecular desde 1.000 hasta 2.800 mediante copolimerización de tetrahidrofurano y alfa, omega-dioles con excepción del 1, 4-butanodiol, a modo de comonómero en presencia de un heteropoliácido y de un hidrocarburo, en el cual se elimina por destilación a partir de la copolimerización una mezcla formada por agua y por este hidrocarburo, caracterizado porque se interrumpe la polimerización mediante adición de agua cuando se alcanza este peso molecular.

    173.
    发明专利
    未知

    公开(公告)号:AT331750T

    公开(公告)日:2006-07-15

    申请号:AT04724282

    申请日:2004-03-30

    Applicant: BASF AG

    Abstract: The present invention relates to a process for the single-stage preparation of polyoxyalkylene glycols by copolymerization of THF and alpha, omega-diols in the presence of a heteropolyacid, wherein the content of organically bound nitrogen in the alpha, omega-diol is less than 15 ppm.

    174.
    发明专利
    未知

    公开(公告)号:DE102004033557A1

    公开(公告)日:2006-02-16

    申请号:DE102004033557

    申请日:2004-07-09

    Applicant: BASF AG

    Abstract: The present invention provides a process for preparing 1,6-hexanediol by hydrogenating dialkyl adipates, alkyl 6-hydroxycaproates, 1,4-cyclohexanedione and 4-hydroxycyclohexan-1-one as ester mixtures comprising impurities, by a) freeing resulting the esterification mixture of excess alcohol and low boilers in a first distillation stage (alcohol removal), b) carrying out a separation of the bottom product in a second distillation stage into an ester fraction substantially free of 1,4-cyclohexanediols and a fraction comprising at least the majority of the 1,4-cyclohexanediols, c) catalytically hydrogenating the ester fraction substantially free of 1,4-cyclohexanediols (ester hydrogenation) and d) in a purifying distillation stage, obtaining 1,6-hexanediol from the hydrogenation effluent in a manner known per se, which comprises selectively hydrogenating the ester mixture before stage a) and/or before stage b) (purifying hydrogenation).

    175.
    发明专利
    未知

    公开(公告)号:DE50011586D1

    公开(公告)日:2005-12-15

    申请号:DE50011586

    申请日:2000-12-12

    Applicant: BASF AG

    Abstract: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst compounds of the general formulae (Ia) and/or (Ib)where n is 1, 2 or 3 and R and R are independently C1- to C6-alkyl or C2- to C6-alkenyl, or together a butenyl unit.

    PROCEDIMIENTO PARA LA OBTENCION DE PIRROLIDONAS.

    公开(公告)号:ES2243754T3

    公开(公告)日:2005-12-01

    申请号:ES02754703

    申请日:2002-06-18

    Applicant: BASF AG

    Abstract: Procedimiento para la obtención de pirrolidona en caso dado N-substituida mediante hidrogenación en fase gaseosa bajo condiciones anhidras de un substrato, que se elige entre los ácidos dicarboxílicos con 4 átomos de carbono y sus derivados, en caso dado con adición de amoníaco o de aminas primarias, con empleo de un catalizador exento de Cr, que presenta desde un 5 hasta un 95 % en peso de CuO, preferentemente desde un 30 hasta un 70 % en peso de CuO, y desde un 5 hasta un 95 % en peso de Al2O3, preferentemente desde un 30 hasta un 70 % en peso de Al2O3, y desde 0 hasta un 60 % en peso, preferentemente desde un 5 hasta un 40 % en peso de ZnO.

    180.
    发明专利
    未知

    公开(公告)号:ES2216999T3

    公开(公告)日:2004-11-01

    申请号:ES00981362

    申请日:2000-12-11

    Applicant: BASF AG

    Abstract: A process for preparing N-alkenyl-amides by reacting the corresponding NH-amides with acetylenes in the liquid phase in the presence of basic alkali metal compounds and of a cocatalyst comprises using as the cocatalyst diols of the general formula (I)where Xis branched or unbranched alkylene selected from the group consisting ofwhere R1 to R6 are independently hydrogen or C1- to C4-alkyl;orbranched or unbranched cyclic alkylene of 3 to 14 carbon atoms including 3 to 12 ring carbon atoms,their monoalkenyl ethers, their dialkenyl ethers or mixtures thereof.

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