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    21.
    发明专利
    未知

    公开(公告)号：DE502005001845D1

    公开(公告)日：2007-12-13

    申请号：DE502005001845

    申请日：2005-07-07

    Applicant: BASF AG

    Inventor： HAUNERT ANDREA ,  PINKOS ROLF ,  KRUG THOMAS ,  SIRCH TILMAN ,  KOCH MICHAEL ,  TEBBEN GERD-DIETER

    IPC: C07C29/145 ,  C07C29/149 ,  C07C31/20

    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).

    22.
    发明专利
    未知

    公开(公告)号：DE102006027233A1

    公开(公告)日：2007-12-13

    申请号：DE102006027233

    申请日：2006-06-09

    Applicant: BASF AG

    Inventor： WABNITZ TOBIAS ,  HATSCHER STEPHAN ,  KAESHAMMER STEFAN ,  PINKOS ROLF

    IPC: C08G65/26

    Abstract: The present invention relates to a process for preparing polytetrahydrofuran or tetrahydrofuran copolymers by polymerization of tetrahydrofuran in the presence of a telogen and/or a comonomer over a fixed bed of an acid catalyst, in which the temperature of the polymerization mixture increases in the direction of flow through the catalyst bed.

    METHOD FOR PRODUCING 1,6-HEXANEDIOL
    25.
    发明专利
    METHOD FOR PRODUCING 1,6-HEXANEDIOL 未知

    公开(公告)号：CA2305590C

    公开(公告)日：2007-06-12

    申请号：CA2305590

    申请日：1998-12-10

    Applicant: BASF AG

    Inventor： BREITSCHEIDEL BORIS ,  PINKOS ROLF ,  FISCHER ROLF HARTMUTH ,  LIANG SHELUE ,  STEIN FRANK

    IPC: C07C29/149 ,  C07B61/00 ,  C07C31/20

    Abstract: The invention relates to a method for producing 1,6-hexanediol by hydrogenating adipic acid esters and/or 6-hydroxycarboxylic acid esters in the gaseous phase at an elevated temperature and pressure in the present of chromium-free catalysts. Hydrogenation is carried out a) using catalysts containing copper, manganese and aluminium as essenti al constituents or in the presence of Raney copper, b) at temperatures of between 150 and 230.degree.C and pressures of between 10 and 70 bar, c) at a molar ratio of hyrogen to hydrogenating ester of between 150 to 1 and 300 to 1; and d) at a catalyst load of between 0.01 and 0.3 kg C3-ester per litre of catalyst and hour.

    26.
    发明专利
    未知

    公开(公告)号：DE102005042185A1

    公开(公告)日：2007-03-08

    申请号：DE102005042185

    申请日：2005-09-06

    Applicant: BASF AG

    Inventor： LORENZ RUDOLF ERICH ,  PINKOS ROLF ,  STEINIGER MICHAEL ,  SCHAEFER GERD

    IPC: C07C29/76 ,  C07C29/17 ,  C07C31/20 ,  C07C33/035 ,  C07C33/046

    Abstract: The present invention relates to processes for making 1,4-butanediol, 1,4-butenediol, or a mixture thereof by processing 1,4-butynediol in a dynamic mixing apparatus in an inert gas atmosphere at from 25 to 150° C. at a shear rate in the radial gap between rotor and stator of the mixing apparatus of more than 100 000 sec-1; phase separating the processed 1,4-butynediol at a temperature of from 25 to 150° C.; removing a bottom phase to obtain purified 1,4-butynediol; and reacting the purified 1,4-butynediol with hydrogen in the presence of a catalyst.

    27.
    发明专利
    未知

    公开(公告)号：DE102005004604A1

    公开(公告)日：2006-08-10

    申请号：DE102005004604

    申请日：2005-02-01

    Applicant: BASF AG

    Inventor： WECK ALEXANDER ,  ROESCH MARKUS ,  WINDECKER GUNTHER ,  HEYDRICH GUNNAR ,  PINKOS ROLF ,  SCHUBERT OLGA ,  HARTH KLAUS

    IPC: C07B31/00 ,  B01J3/00 ,  B01J4/00 ,  B01J10/00 ,  B01J19/24

    Abstract: The invention relates to a method of controlling a hydrogenation of a starting material in a hydrogenation reactor, in which the amount of hydrogen reacted in the hydrogenation is firstly determined, the ratio of the amount of hydrogen reacted to the amount of starting material fed in is then derived, this ratio is compared with a prescribed value and, finally, at least one process parameter is altered if the ratio of the amount of hydrogen reacted to the amount of starting material fed in deviates by a prescribed amount from the prescribed value.

    PROCESS FOR PREPARING 1,6 HEXANEDIOL AND CAPROLACTONE
    29.
    发明专利
    PROCESS FOR PREPARING 1,6 HEXANEDIOL AND CAPROLACTONE 未知

    公开(公告)号：CA2248004C

    公开(公告)日：2006-04-11

    申请号：CA2248004

    申请日：1997-02-28

    Applicant: BASF AG

    Inventor： RUST HARALD ,  STEIN FRANK ,  BREITSCHEIDEL BORIS ,  PINKOS ROLF ,  FISCHER ROLF ,  BAUR KARL GERHARD

    IPC: C07D313/04 ,  C07C27/12 ,  C07C29/149 ,  C07C29/80 ,  C07C29/88 ,  C07C31/20 ,  C07C31/27 ,  C07C51/31 ,  C07D315/00

    Abstract: The invention relates to a process for preparing 1,6 hexane diol and .epsilo n.- caprolacton from a carboxylic acid mixture containing adipic acid, 6-hydroxy caproic acid and, in small quantities, 1,4 cyclohexane diols . Said mixture is obtained as a by-product of the oxidation of cyclohexane into cyclohexanone/ cyclohexanol with oxygen or gases containing oxygen, by water extraction of the reaction mixture. Said process involves esterification and hydrogenation of a partial stream into hexane diol and cyclization of 6-hydroxy caproic acid esters into caprolacton. According to this process: (a) the monocarboxylic acids and the dicarboxylic acids contained in the aqueous reaction mixture are reacted with a low-molecular alcohol to form the corresponding carboxyli c acid esters; (b) the excess alcohol, water and low-boiling agents of the resultant esterification mixture are released in a first distillation stage; (c) separating into a ester fraction substantially free of 1,4 cyclohexane diols, and a fraction containing at least the greater par t of the 1,4 cyclohexane diols is carried out from the bottom product in a second distillation stage; (d) at least part of a stream substantially containing 6-hydroxy caproic acid ester is separated from the ester fraction in a third distillation stage; (e) the ester fraction fro m (d), from which 6-hydroxy caproic acid ester was at least partially removed, is hydrogenated catalytically and 1,6 hexane diol is extracted by distilling the hydrogenated product in a known manner, and (f) the stream substantially containing 6-hydroxy caproic acid ester is heat ed to temperatures above 200 .degree.C at reduced pressure, thereby causing cyclization of 6-hydroxy caproic acid ester to form caprolacton, and pure e-caprolacton is recovered from the cyclization product by distillation.

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