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    16.
    发明专利
    未知

    公开(公告)号：DE50302623D1

    公开(公告)日：2006-05-04

    申请号：DE50302623

    申请日：2003-07-22

    Applicant: BASF AG

    Inventor： BASSLER PETER ,  GOEBBEL HANS-GEORG ,  TELES HENRIQUE ,  RUDOLF PETER

    IPC: C07D301/12 ,  B01D3/14 ,  B01D3/42

    Abstract: Process for the continuously operated purification by distillation of the methanol used as solvent in the synthesis of propylene oxide by reaction of a hydroperoxide with propylene, with the methoxypropanols being separated off simultaneously, wherein the solvent mixture obtained in the synthesis is separated in a dividing wall column into a low-boiling fraction including methanol, an intermediate-boiling fraction containing the methoxypropanols as azeotrope with water and a high-boiling fraction including water and propylene glycol.

    17.
    发明专利
    未知

    公开(公告)号：BRPI0409316A

    公开(公告)日：2006-04-25

    申请号：BRPI0409316

    申请日：2004-04-15

    Applicant: BASF AG

    Inventor： BARTSCH MICHAEL ,  BAUMANN ROBERT ,  HADERLEIN GERD ,  FLORES MIGUEL ANGEL ,  JUNGKAMP TIM ,  LUYKEN HERMANN ,  SCHEIDEL JENS ,  SIEGEL WOLFGANG ,  KUNSMANN-KEITEL DAGMAR PASCALE ,  BASSLER PETER

    IPC: C01C3/02 ,  C01C3/04 ,  C07C253/00

    Abstract: A process for dewatering hydrocyanic acid by distillation, which includes distilling crude hydrocyanic acid containing from 50 to 99.9% by weight of HCN, from 0.1 to 40% by weight of water, from 0 to 15% by weight of carbon oxides and optionally from 0.01 to 1% by weight of an involatile stabilizer, at a pressure of from 1 bar to 2.5 bar, a bottom temperature of from 100° C. to 130° C. and a top temperature of from 25° C. to 54° C., in the absence of a volatile stabilizer, in a distillation column to obtain a top draw stream containing purified, anhydrous hydrocyanic acid and carbon oxides and a bottom draw stream including water and, optionally, the involatile stabilizer.

    18.
    发明专利
    未知

    公开(公告)号：DE50108247D1

    公开(公告)日：2006-01-05

    申请号：DE50108247

    申请日：2001-06-13

    Applicant: BASF AG

    Inventor： LUYKEN HERMANN ,  OHLBACH DR ,  FISCHER ROLF-HARTMUTH ,  MELDER JOHANN-PETER ,  BASSLER PETER ,  ANSMANN ANDREAS ,  ACHHAMMER GUENTHER

    IPC: C07C209/48 ,  C07C253/34 ,  C07C255/03 ,  C07C255/24

    Abstract: The invention relates to a method for removing, by distillation, 6-aminocapronitrile from mixtures that contain 6-aminocapronitrile, adipodinitrile and hexamethylenediamine, by a) removing the hexamethylenediamine from the mixture while obtaining a mixture (I) that has a hexamethylenediamine content of less than 1 wt. -%, b) removing completely or partially the 6-aminocapronitrile from mixture (I) while obtaining a mixture (II) whose content in substances that have a higher boiling point as 6-aminocapronitrile under distillation conditions and that cannot be formed by dimerization reactions when 6-aminocapronitrile is thermally treated is less than 1 wt. -%, and c) completely or partially removing from mixture (II) the hexamethylenediamine that might be present while obtaining a mixture (IV) whose hexamethylenediamine content is higher than that of mixture (II), and a mixture (V) whose hexamethylenediamine content is lower than that of mixture (II).

    19.
    发明专利
    未知

    公开(公告)号：DE50204869D1

    公开(公告)日：2005-12-15

    申请号：DE50204869

    申请日：2002-02-06

    Applicant: BASF AG

    Inventor： TELES HENRIQUE ,  REHFINGER ALWIN ,  BERG ANNE ,  RUDOLF PETER ,  RIEBER NORBERT ,  BASSLER PETER

    IPC: C07D301/12 ,  C07D301/19 ,  C07D301/32 ,  C07D303/04

    Abstract: An organic compound having at least one C-C double bond is epoxidized by means of hydrogen peroxide in the presence of at least one catalytically active compound and at least one solvent, wherein a product mixture comprising alpha-hydroperoxyalcohols is reduced using at least one reducing agent. The process advantageously comprises at least the following steps: (i) reacting an organic compound having at least one C-C double bond with hydrogen peroxide in the presence of at least one catalytically active compound and at least one solvent to give a product mixture P1 comprising alpha-hydroperoxyalcohols; (ii) separating an epoxide formed in the reaction in step (i) and the unreacted organic compound having at least one C-C double bond from P1 or P1' to give a product mixture P2 or P2', where P2 comprises the alpha-hydroperoxyalcohols formed as by-product in the reaction in step (i) and P2' is largely free of alpha-hydroperoxyalcohols; (iii) treating P1 and/or P2 with at least one reducing agent so that the alpha-hydroperoxyalcohols are converted into corresponding glycols to give a product mixture P1' or P3.

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