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    METHOD FOR PRODUCING ORTHOCARBOXYLIC ACID TRIALKYL ESTERS
    33.
    发明专利
    METHOD FOR PRODUCING ORTHOCARBOXYLIC ACID TRIALKYL ESTERS 未知

    公开(公告)号：CA2460545A1

    公开(公告)日：2003-04-03

    申请号：CA2460545

    申请日：2002-09-05

    Applicant: BASF AG

    Inventor： PUETTER HERMANN ,  FISCHER ANDREAS

    IPC: C07C41/60 ,  C07C43/32 ,  C25B3/23 ,  C25B3/00

    Abstract: The invention relates to a method for producing orthoesters of general formu la I, in which the radicals are defined as follows: R1: hydrogen, C1 to C20 alkyl, C2 to C20 alkenyl, C2 to C20 alkinyl, C3 to C12 cycloalkyl, C4 to C20 cycloalkyl alkyl or C4 to C10 aryl, R2 and R3: C1 to C20 alkyl, C3 to C12 cycloalkyl and C4 to C20 cycloalkyl alkyl, or R2 and R3 together form C2 to C10 alkylene, R4: C1 to C4 alkyl. According to the invention, a compound of general formula II is electrochemically oxidised in the presence of C1 to C4 alcohols (alcohols A). In said formula, the radicals R1 to R3 have the same definition as in the general formula I and R5 represents a saturated or unsaturated 5 or 6 membered heterocycloalkyl radical or heterocycloaryl radical comprising up to 2 heteroatoms, selected from the group containing N , O and S, said radical being bonded to the residual part of the molecule by a carbon atom, which is in a vicinal position in relation to a heteroatom.

    34.
    发明专利
    未知

    公开(公告)号：DE10130828A1

    公开(公告)日：2003-01-16

    申请号：DE10130828

    申请日：2001-06-27

    Applicant: BASF AG

    Inventor： WESSEL HELGE ,  BENDER MICHAEL ,  HARTH KLAUS ,  FISCHER ANDREAS ,  HOELZLE MARKUS

    IPC: H01M4/86 ,  H01M4/90 ,  H01M8/0662 ,  H01M8/1004 ,  H01M8/1007

    Abstract: Fuel cell (1) comprises two electrodes (2) and an ion exchange membrane (6). The electrodes each have an electro-catalytic layer (4) and a gas feed for a reaction gas (7). The electro-catalytic layers each contain a standard catalyst. The fuel cell further contains an additive that prevents the formation of peroxides and/or decomposes peroxides. Preferred Features: The additive is an element or compound of a metallic transition element or group IVa element, preferably cobalt (Co), iron (Fe), chromium (Cr), manganese (Mn), copper (Cu), vanadium (V), ruthenium (Ru), palladium (Pd), nickel (Ni), molybdenum (Mo), tin (Sn) or tungsten (W). The element or compound is supported on a carrier material selected from carbon, silica (SiO2), alumina (Al2O3), zeolite or hetero-poly acids.

    FUEL CELL
    35.
    发明专利
    FUEL CELL 未知

    公开(公告)号：CA2390299A1

    公开(公告)日：2002-12-27

    申请号：CA2390299

    申请日：2002-06-11

    Applicant: BASF AG

    Inventor： BENDER MICHAEL ,  HARTH KLAUS ,  FISCHER ANDREAS ,  HOLZLE MARKUS ,  WESSEL HELGE

    IPC: H01M4/86 ,  H01M4/90 ,  H01M8/0662 ,  H01M8/1004 ,  H01M8/1007 ,  H01M8/06

    Abstract: The invention relates to a fuel cell (1) having two electrodes (2) and an i on exchanger membrane (6), where the electrodes (2) are each provided with an electrocatalytic layer (4) and at least one gas channel for a reaction gas (7). The fuel cell has at least one additive which prevents the formation of peroxide s and/or destroys peroxides. The invention furthermore relates to the use of at least one additive in or on electrodes (2) of a fuel cell (1) having an ion exchanger membrane (6), where the electrodes (2) are each provided with an electrocatalytic layer (4) and at least one gas channel for a reaction gas (7). The at least one additive serves for the prevention of the formation and/or for the destructi on of peroxides on or in the electrodes (2).

    Method for producing alcoxylated carbonyl compounds by an anodic oxidation method using a cathodic coupled reaction for organic synthesis
    36.
    发明专利
    Method for producing alcoxylated carbonyl compounds by an anodic oxidation method using a cathodic coupled reaction for organic synthesis 未知

    公开(公告)号：AU2487402A

    公开(公告)日：2002-06-03

    申请号：AU2487402

    申请日：2001-11-22

    Applicant: BASF AG

    Inventor： PUTTER HERMANN ,  FISCHER ANDREAS

    IPC: C25B3/23 ,  C25B3/00

    Abstract: A method for producing alcoxylated carbonyl compounds of general formula (I) (compounds I): R aR C(OR )b wherein R , R represent hydrogen or C1-C6-alkyl, R independently means C1-C6-alkyl, a is 0 or 1, b 2 or 3 with the proviso that the sum of a and b is 3, by means of anodic oxidation of germinal dialcoxy compounds of general formula (II) (compounds II) wherein R , R , R , R represent hydrogen or C1-C6-alkyl, R , R represent C1-C6-alkyl or C1-C6-alcoxy, in the presence of a C1-C6-alkyl alcohol (compounds III). A usual compound (compound IV) is used as a cathodic depolarizer suitable for electrochemical oxidation. The anodic oxidation and cathodic reduction is carried out in an undivided electrolyte cell in the presence of C1-C6-alkyl alcohols.

    METHOD FOR PRODUCING ALCOXYLATED CARBONYL COMPOUNDS BY AN ANODIC OXIDATION METHOD USING A CATHODIC COUPLED REACTION FOR ORGANIC SYNTHESIS
    37.
    发明专利
    METHOD FOR PRODUCING ALCOXYLATED CARBONYL COMPOUNDS BY AN ANODIC OXIDATION METHOD USING A CATHODIC COUPLED REACTION FOR ORGANIC SYNTHESIS 未知

    公开(公告)号：CA2429450A1

    公开(公告)日：2002-05-30

    申请号：CA2429450

    申请日：2001-11-22

    Applicant: BASF AG

    Inventor： PUTTER HERMANN ,  FISCHER ANDREAS

    IPC: C25B3/23 ,  C25B3/00

    Abstract: A method for producing alcoxylated carbonyl compounds of general formula (I) (compounds I): R1aR2C(OR3)b wherein R1, R2 represent hydrogen or C1- C6-alkyl, R3 independently means C1- C6-alkyl, a is 0 or 1, b 2 or 3 with the proviso that the sum of a and b is 3, by means of anodic oxidation of germinal dialcoxy compounds of general formula (II) (compounds II) wherein R4, R5, R6, R7 represent hydrogen or C1- C6-alkyl, R5, R6 represent C1- C6-alkyl or C1- C6- alcoxy, in the presence of a C1-C6-alkyl alcohol (compounds III).A usual compound (compound IV) is used as a cathodic depolarizer suitable for electrochemical oxidation. The anodic oxidation and cathodic reduction is carried out in an undivided electrolyte cell in the presence of C1-C6-alkyl alcohols.

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