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    PRODUCTION OF 2,5,6-TRIMETHYL-2-CYCLOHEXEN-1-ONE
    1.
    发明专利
    PRODUCTION OF 2,5,6-TRIMETHYL-2-CYCLOHEXEN-1-ONE 失效

    公开(公告)号：JPH11292819A

    公开(公告)日：1999-10-26

    申请号：JP6492199

    申请日：1999-03-11

    Applicant: BASF AG

    Inventor： RUFF DETLEF DR ,  BURST WOLFRAM ,  KAISER WULF DR ,  STROEZEL MANFRED

    IPC: C07C45/72 ,  C07C45/74 ,  C07C49/603

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 2,5,6-trimethyl-2-cyclohexen-1-one in industrial scale, good yield and good space time yield. SOLUTION: This method for producing 2,5,6-trimethyl-2-cyclohexen-1-on comprises simultaneously pumping 1 mol crotonaldehyde or 1 mol compound which is converted under the reaction conditions into crotonaldehyde, about 5-30 mol diethyl ketone and the aqueous solution or suspension of a strong base in the presence of a base agent at elevated temperature, through separate lines or at least partly in the form of a suitable mixture, continuously into a pressure vessel, which is heated where appropriate and which ensures vigorous mixing, in such a way that the reaction temperature is 150-350 deg.C and the average residence time in the pressure vessel is about 0.1 second to 20 min.

    METHOD FOR PRODUCING ALKALI METAL SALT OF L-ASCORBIC ACID
    2.
    发明专利
    METHOD FOR PRODUCING ALKALI METAL SALT OF L-ASCORBIC ACID 失效

    公开(公告)号：JP2001151765A

    公开(公告)日：2001-06-05

    申请号：JP2000342489

    申请日：2000-11-09

    Applicant: BASF AG

    Inventor： BURST WOLFRAM ,  KAIBEL GERD DR ,  BOETTCHER ANDREAS ,  KESSLER VERONIQUE ,  KUNTZE THOMAS

    IPC: B01D3/32 ,  C07B61/00 ,  C07D307/62

    Abstract: PROBLEM TO BE SOLVED: To provide a method for continuously producing an alkali metal salt of L-ascorbic acid at an inexpensive cost of apparatus without causing reduction in yield. SOLUTION: In the case of producing the alkali metal salt of L-ascorbic acid by a method including a process (a) for esterifying 2-keto-L-gluconic acid or diacetone-2-keto-L-gluconic acid with a 1-10C alcohol in the presence of an acid catalyst and a process (b) for rearranging a formed 2-keto-L-gluconic acid 1-10C alkyl ester in the presence of a 1-10C alkali metal alcoholate, the treatment process (a) and the treatment process (b) are continuously carried out.

    PRODUCTION OF HIGHLY PURE PHYTANTRIOL
    3.
    发明专利
    PRODUCTION OF HIGHLY PURE PHYTANTRIOL 失效

    公开(公告)号：JP2000219647A

    公开(公告)日：2000-08-08

    申请号：JP2000019094

    申请日：2000-01-27

    Applicant: BASF AG

    Inventor： STREICHER HARALD DR ,  BURST WOLFRAM ,  JUERGEN DOIVERU ,  JUERGEN KOPPENHOEFER

    IPC: C07C29/80 ,  C07C31/22

    Abstract: PROBLEM TO BE SOLVED: To produce a highly pure phytantriol useful for cosmetics or the like in high yield without using a heavy metal compound by rectifying a crude phytantriol in a column including a metallic packing material under a specific condition. SOLUTION: Phytantriol obtained by reacting isophytol with performic acid, and saponifying the formed reaction product with an alkaline chemical, and contaminated with byproducts having the lower boiling point and/or the higher boiling point is rectified in a column including a metallic packing material having a regular structure under a moderate vacuum while completely blocking the air under an insulation condition by using an apparatus regulated so that (i) the distribution of a liquid may be carried out by a pass-distributor 6 having >=500 per m2 dropping points, (ii) the passes of the liquid distributor 6 may be arranged so as to form 90 deg. angle to fabric layers of packing material elements 7 and 8 just under the distributor 6, and (iii) two or more fabric layers of the packing material elements having 20-100 mm height may be arranged under the distributor so as to rotate 90 deg. angle to each other.

    METHOD FOR SEPARATING AZEOTROPIC MIXTURE
    4.
    发明专利
    METHOD FOR SEPARATING AZEOTROPIC MIXTURE 审中-公开

    公开(公告)号：JP2002239302A

    公开(公告)日：2002-08-27

    申请号：JP2002007719

    申请日：2002-01-16

    Applicant: BASF AG

    Inventor： BURST WOLFRAM ,  KAIBEL GERD ,  KUNTZE THOMAS ,  KOENIG JOSEF

    IPC: B01D3/36 ,  C07C17/386 ,  C07C21/12 ,  C07C29/82 ,  C07C31/12

    Abstract: PROBLEM TO BE SOLVED: To provide a method for separating an azeotropic mixture economical and simple from an aspect of process engineering. SOLUTION: The method for separating a liquid mixture comprising at least two kinds of components A and B, which form the azeotropic mixture mutually or along with other component, includes a process (i) for distilling the mixture to be separated in the presence of an auxiliary H, which forms a two-component azeotropic mixture AH or BH having a boiling point lower than that of the auxiliary H along with two kinds of the components A and B, and a process (ii) for isolating an A, H-containing fraction of which the content of B is reduced as compared with the mixture to be separated and a B, H-containing fraction of which the content of A is reduced as compared with the mixture to be separated.

    METHOD FOR PRODUCING (1-10C)ALKYL 2-KETO-L-GULONATE
    5.
    发明专利
    METHOD FOR PRODUCING (1-10C)ALKYL 2-KETO-L-GULONATE 失效

    公开(公告)号：JP2001106695A

    公开(公告)日：2001-04-17

    申请号：JP2000247011

    申请日：2000-08-16

    Applicant: BASF AG

    Inventor： BOETTCHER ANDREAS ,  BURST WOLFRAM

    IPC: C07B61/00 ,  C07H1/00 ,  C07H7/027

    Abstract: PROBLEM TO BE SOLVED: To obtain a (1-10C)alkyl 2-keto-L-gulonate as an intermediate for synthesizing L-ascorbic acid (vitamin C) in a sufficiently low residual water content rate and a short esterification reaction residence time. SOLUTION: In the method for producing the (1-10C)alkyl 2-keto-L-gulonate by esterifying 2-keto-L-gulonic acid or diacetone-2-keto-L-gulonic acid with a 1-10C alcohol in the presence of an acidic catalyst, esterification is carried out in the hot surface of a liquid film while removing water at the same time. Solid is not formed in a reactor though keto-L-gulonic acid is difficultly soluble in an lower alcohol such as methanol, ethanol, propanol, butanol or pentanol and a produced ester is present in a state not containing a solvent after removing water.

    LIQUID DISTRIBUTOR FOR VACUUM DISTILLATION
    6.
    发明申请
    LIQUID DISTRIBUTOR FOR VACUUM DISTILLATION 审中-公开
    液体分布器用于真空蒸馏

    公开(公告)号：WO2004026426A3

    公开(公告)日：2004-06-24

    申请号：PCT/EP0310236

    申请日：2003-09-15

    Applicant: BASF AG ,  BURST WOLFRAM ,  HARMS GUIDO ,  FREY GUENTHER ,  JANSEN HELMUT

    Inventor： BURST WOLFRAM ,  HARMS GUIDO ,  FREY GUENTHER ,  JANSEN HELMUT

    IPC: B01D20060101 ,  B01D3/00 ,  B01D3/10 ,  B01J19/32

    CPC classification number: B01D3/008 ,  B01J19/32

    Abstract: The invention relates to a liquid distributor for vacuum distillation, comprising an admission (1) and means for supplying the liquid to distributor channels (5) which comprise openings for feeding the liquid to be distributed to a column packing (7). The inventive liquid distributor is characterised in that the supply means comprise a pipe manifold (4) which is provided with pipes and horizontally arranged in a plane, said pipe manifold comprising openings (3) for supplying liquid to the distributor channels (5).

    Abstract translation: 本发明涉及一种用于真空蒸馏的进料（1）的液体分布器和用于将液体供应到分配器通道（5），对于所述液体的对象的开口，以被分布到塔填料（7）。 本发明的液体分配器的特征在于，所述进料装置水平设置在一个平面上歧管盖（4）与具有开口的管（3），用于分配液体的分配器通道（5）。

    8.
    发明专利
    未知

    公开(公告)号：DE59611228D1

    公开(公告)日：2005-06-16

    申请号：DE59611228

    申请日：1996-06-29

    Applicant: BASF AG

    Inventor： HARTMANN HORST ,  BURST WOLFRAM ,  KAISER DR ,  LAAS DR ,  GRAFEN DR ,  BOCKSTIEGEL DR ,  BALDENIUS DR

    IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  B01D3/16 ,  B01D3/26 ,  B01D3/32 ,  B01J19/32 ,  C07C17/38 ,  C07D311/72

    Abstract: Process to rectify mixts. of high-boiling air and / or temp. sensitive substances requiring a high sepn. efficiency. Process is carried out in a fine vacuum (pref. 0.1-2 mbar) in columns contg. metal fabric packing of an ordered structure. The liq. distribution is carried out by channel distributors with at least 500 drainage points per square metre. The distributor channels are arranged at around 90 degrees to the fabric layers of the packing elements directly under these distributors. Two or more packing elements of height 20-100 mm are inserted below the distributor, whose fabric layers are turned at around 90 degrees to each other. The process is run in the complete absence of air and the rectification is operated strictly adiabatically. Also claimed are columns with output and enhancement sections contg. metal fabric packing for the above process.

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