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    11.
    发明专利
    未知

    公开(公告)号：DE50312621D1

    公开(公告)日：2010-05-27

    申请号：DE50312621

    申请日：2003-09-12

    Applicant: BASF SE

    Inventor： SCHLITTER STEPHAN ,  HAUBNER MARTIN ,  HESSE MICHAEL ,  KAESHAMMER STEFAN ,  PINKOS ROLF ,  SIGWART CHRISTOPH

    IPC: B01J21/16 ,  B01J35/00 ,  C08G61/12 ,  C08G65/26

    Abstract: The present invention relates to a solid, acid catalyst for the preparation of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which has a BET surface area of at least 160 m 2 /g and an acid center density of at least 0.05 mmol/g for pK a values of from 1 to 6, to a process for preparing it and to a process for the polymerization of cyclic ethers over this catalyst.

    12.
    发明专利
    未知

    公开(公告)号：AT464119T

    公开(公告)日：2010-04-15

    申请号：AT03798903

    申请日：2003-09-12

    Applicant: BASF SE

    Inventor： SCHLITTER STEPHAN ,  HAUBNER MARTIN ,  HESSE MICHAEL ,  KAESHAMMER STEFAN ,  PINKOS ROLF ,  SIGWART CHRISTOPH

    IPC: B01J21/16 ,  B01J35/00 ,  C08G61/12 ,  C08G65/26

    Abstract: The present invention relates to a solid, acid catalyst for the preparation of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which has a BET surface area of at least 160 m 2 /g and an acid center density of at least 0.05 mmol/g for pK a values of from 1 to 6, to a process for preparing it and to a process for the polymerization of cyclic ethers over this catalyst.

    METODO PARA PRODUCIR HIDROXIPIVALALDEHIDOY NEOPENTILGLICOL.
    13.
    发明专利
    METODO PARA PRODUCIR HIDROXIPIVALALDEHIDOY NEOPENTILGLICOL. 未知

    公开(公告)号：MX2009009273A

    公开(公告)日：2009-09-09

    申请号：MX2009009273

    申请日：2008-02-25

    Applicant: BASF SE

    Inventor： MAAS STEFFEN ,  SIRCH TILMAN ,  RITTINGER STEFAN ,  SCHLITTER STEPHAN ,  STEININGER MICHAEL

    IPC: C07C29/141 ,  C07C45/75 ,  C07C45/82 ,  C07C47/19

    Abstract: La invención se relaciona con hidroxipivalinaldehído, que se produce mediante la aldolización de isobutiraldehído con formaldehído y procesandmiento subsecuente del producto de reacción mediante destilación, en donde el producto de reacción se alimenta a una columna de destilación, que se opera a una presión superior que varía entre 0.5 y 1.5 bar y en la que se proporciona un proceso de condensación de dos etapas en la región superior. En este proceso, los vapores primero se alimentan a un condensador parcial operado a una temperatura que varía entre 50 y 80ºC, el condensado del cual se regresa cuando menos parcialmente a la columna de destilación, y los vapores que no se condensan en el condensador parcial se alimentan a un condensador de corriente abajo operado a una temperatura que varía entre -40º y +30ºC, el condensado del cual se descarga cuando menos parcialmente.

    17.
    发明专利
    未知

    公开(公告)号：BRPI0808032A2

    公开(公告)日：2014-06-17

    申请号：BRPI0808032

    申请日：2008-02-25

    Applicant: BASF SE

    Inventor： SIRCH TILMAN ,  STEINIGER MICHAEL ,  MAAS STEFFEN ,  RITTINGER STEFAN ,  SCHLITTER STEPHAN

    IPC: C07C29/141 ,  C07C45/75 ,  C07C45/82 ,  C07C47/19

    Abstract: The preparation of hydroxypivalaldehyde is effected by aldolizing isobutyraldehyde with formaldehyde and subsequently working up the resulting reaction effluent by distillation, wherein the reaction effluent is fed to a distillation column which is operated at a top pressure in the range from 0.5 to 1.5 bar and in which a two-stage condensation is provided in the top region, in which the vapors are first conducted into a partial condenser operated at a temperature in the range from 50 to 80° C., whose condensate is recycled at least partly into the distillation column, and in which the vapors uncondensed in the partial condenser are fed to a downstream condenser operated at a temperature in the range from −40 to +30° C., whose condensate is at least partly discharged.

    METHOD FOR PURIFYING POLYMETHYLOLS
    18.
    发明专利
    METHOD FOR PURIFYING POLYMETHYLOLS 未知

    公开(公告)号：SG171403A1

    公开(公告)日：2011-07-28

    申请号：SG2011037611

    申请日：2009-12-07

    Applicant: BASF SE

    Inventor： SIRCH TILMAN ,  STEINIGER MICHAEL ,  MAAS STEFFEN ,  RITTINGER STEFAN ,  SCHLITTER STEPHAN

    Abstract: METHOD FOR PURIFYING POLYMETHYLOLSAbstractThe present invention relates to a process for distilling an aqueous plymethylolmixture which comprises a polymethylol of the formula (I)[err]in which each R is independently a further methylol group or an alkyl group having 1 to12 carbon atoms of an aryl or aralkyl group having 6 to 22 carbon atoms, a tertiaryamine, water and the adduct of tertiary amine and tomic acid(amine fumate), whichcomprises performing the distillation in a distillation column which is connected at thebottom to an evaporator, the bottom temperature being above the evaporationtemperature of the monoester of formic acid and polymethylol(polymethylol furmate)which forms during distillation. The present invention further relates to a composition comprising polymethylol and 1 to 10 000 ppm by weight of polymethylol formate, and tothe use thereof.No suitable drawings.

    19.
    发明专利
    未知

    公开(公告)号：BRPI0708286A2

    公开(公告)日：2011-05-24

    申请号：BRPI0708286

    申请日：2007-02-23

    Applicant: BASF SE

    Inventor： MAAS STEFFAN ,  JOHANN THORSTEN ,  KOCH MICHAEL ,  SIRCH TILMAN ,  SCHLITTER STEPHAN ,  RITTINGER STEFAN ,  STEINIGER MICHAEL

    IPC: C07C29/141 ,  C07C31/20

    Abstract: A process for catalytically hydrogenating methylolalkanals of the general formula in which R1 and R2 are each independently a further methylol group or an alkyl group having from 1 to 22 carbon atoms or an aryl or aralkyl group having from 6 to 33 carbon atoms, in the liquid phase over a hydrogenation catalyst, which comprises setting a pH of from 7.0 to 9.0 in the hydrogenation effluent by adding at least one tertiary amine, an inorganic base or an inorganic or organic acid to the hydrogenation feed.

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