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    81.
    发明专利
    未知

    公开(公告)号：ES2156363T3

    公开(公告)日：2001-06-16

    申请号：ES97905119

    申请日：1997-02-28

    Applicant: BASF AG

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

    IPC: B01J23/80 ,  B01J23/889 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20

    Abstract: PCT No. PCT/EP97/00980 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31882 PCT Pub. Date Sep. 4, 19971,6-Hexanediol is prepared from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol by water extraction of the reaction mixture, by esterification of the acids and hydrogenation wherein a) the monocarboxylic and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) the bottoms are fractionated in a second distillation stage to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols, d) the ester fraction essentially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) in a pure distillation stage, 1,6-hexanediol is isolated from the hydrogenation product in a manner known per se.

    82.
    发明专利
    未知

    公开(公告)号：DE59703470D1

    公开(公告)日：2001-06-07

    申请号：DE59703470

    申请日：1997-02-28

    Applicant: BASF AG

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

    IPC: B01J23/80 ,  B01J23/889 ,  C07B61/00 ,  C07C29/149 ,  C07C31/20

    Abstract: PCT No. PCT/EP97/00980 Sec. 371 Date Aug. 28, 1998 Sec. 102(e) Date Aug. 28, 1998 PCT Filed Feb. 28, 1997 PCT Pub. No. WO97/31882 PCT Pub. Date Sep. 4, 19971,6-Hexanediol is prepared from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as a by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol by water extraction of the reaction mixture, by esterification of the acids and hydrogenation wherein a) the monocarboxylic and dicarboxylic acids present in the aqueous dicarboxylic acid mixture are reacted with a low molecular weight alcohol to give the corresponding carboxylic esters, b) the resulting esterification mixture is freed of excess alcohol and low boilers in a first distillation stage, c) the bottoms are fractionated in a second distillation stage to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols, d) the ester fraction essentially free of 1,4-cyclohexanediols is catalytically hydrogenated and e) in a pure distillation stage, 1,6-hexanediol is isolated from the hydrogenation product in a manner known per se.

    Method for producing hexanediol
    83.
    发明专利
    Method for producing hexanediol 未知

    公开(公告)号：AU6264600A

    公开(公告)日：2001-01-22

    申请号：AU6264600

    申请日：2000-06-21

    Applicant: BASF AG

    Inventor： STEIN FRANK ,  KRUG THOMAS ,  NOBEL THOMAS ,  RUST HARALD

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

    Abstract: A process for preparing 1,6-hexanediol from a carboxylic acid mixture comprising adipic acid, 6-hydroxycaproic acid and small amounts of 1,4-cyclohexanediols which is obtained as by-product in the oxidation of cyclohexane to cyclohexanone/cyclohexanol after water extraction of the reaction mixture followed by extraction with aqueous sodium hydroxide solution, by esterification of the acids and hydrogenation comprisesa) liberating the carboxylic acids from the alkaline extract by addition of a mineral acid,b) fractionating the organic phase comprising carboxylic acids to give a distillate comprising the low molecular weight monocarboxylic acids and a residue comprising adipic acid and 6-hydroxycaproic acid,c) reacting the monocarboxylic an dicarboxylic acids present in the aqueous dicarboxylic acid mixture with a low molecular weight alcohol to give the corresponding carboxylic esters,d) freeing the esterification mixture obtained of excess alcohol and low boilers in a first distillation step,e) fractionating the bottom product in a second distillation step to give an ester fraction essentially free of 1,4-cyclohexanediols and a fraction comprising at least the major part of the 1,4-cyclohexanediols,f) catalytically hydrogenating the ester fraction which is essentially free of 1,4-cyclohexanediols andg) isolating 1,6-hexanediol from the hydrogenation product in a manner known per se in a final distillation step.

    86.
    发明专利
    未知

    公开(公告)号：DE59701672D1

    公开(公告)日：2000-06-15

    申请号：DE59701672

    申请日：1997-09-23

    Applicant: BASF AG

    Inventor： SIGWART CHRISTOPH ,  ELLER KARSTEN ,  BECKER RAINER ,  PLITZKO KLAUS-DIETER ,  FISCHER ROLF ,  STEIN FRANK ,  MUELLER ULRICH ,  HESSE MICHAEL

    IPC: C08G65/10 ,  B01J23/24 ,  C08G18/48 ,  C08G65/20 ,  C08G65/28

    Abstract: PCT No. PCT/EP97/05204 Sec. 371 Date Apr. 1, 1999 Sec. 102(e) Date Apr. 1, 1999 PCT Filed Sep. 23, 1997 PCT Pub. No. WO98/15589 PCT Pub. Date Apr. 16, 1998Polytetrahydrofuran, copolymers of tetrahydrofuran and 2-butyne-1,4-diol, diesters of these polymers with C2-C20-monocarboxylic acids or monoesters of these polymers with C1-C10-monocarboxylic acids are prepared by polymerization of tetrahydrofuran in the presence of one of the telogens water, 1,4-butanediol, 2-butyne-1,4-diol, polytetrahydrofuran having a molecular weight of from 200 to 700 Dalton, a C1-C10-monocarboxylic acid or an anhydride of a C2-C20-monocarboxylic acid or a mixture of these telogens over a heterogeneous supported catalyst which comprises a catalytically active amount of an oxygen-containing molybdenum and/or tungsten compound on an oxidic support material and which has been calcined at from 5OO DEG C. to 1OOO DEG C. after application of the precursor compounds of the oxygen-containing molybdenum and/or tungsten compounds onto the support material precursor, wherein the catalyst is activated by treatment with a reducing agent before it is used as a polymerization catalyst.

    PROCESS FOR PREPARING 1,6 HEXANEDIOL AND CAPROLACTON
    89.
    发明专利
    PROCESS FOR PREPARING 1,6 HEXANEDIOL AND CAPROLACTON 未知

    公开(公告)号：CA2248004A1

    公开(公告)日：1997-09-04

    申请号：CA2248004

    申请日：1997-02-28

    Applicant: BASF AG

    Inventor： RUST HARALD ,  BREITSCHEIDEL BORIS ,  STEIN FRANK ,  FISCHER ROLF ,  PINKOS 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 .epsilon.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 carboxylic 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 part 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 from (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 heated to temperatures above 200 ~C at reduced pressure, thereby causing cyclization of 6-hydroxy caproic acid ester to form caprolacton, and pure .epsilon.caprolacton is recovered from the cyclization product by distillation.

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