1.
    发明专利
    未知

    公开(公告)号:BR0308912A

    公开(公告)日:2005-01-04

    申请号:BR0308912

    申请日:2003-04-15

    Applicant: BASF AG

    Abstract: The invention relates to a process for the preparation of methyl formate by reacting methanol with carbon monoxide at a pressure of from 0.5 to 10 MPa abs. and a temperature of from 50 to 150° C. in the presence of a metal alkoxide as catalyst in a reactor, in which a gas stream is withdrawn from the reactor, entrained methyl formate is removed from this gas stream by condensation, and all or some of the remaining gas stream is returned to the reactor as circulating-gas stream and a mean gas superficial velocity of from 1 to 20 cm/s is set in at least one region of the reactor in which the gas flows essentially in one direction.

    3.
    发明专利
    未知

    公开(公告)号:BRPI0411786A

    公开(公告)日:2006-08-08

    申请号:BRPI0411786

    申请日:2004-06-11

    Applicant: BASF AG

    Abstract: A process for separating a mixture comprising a) a monoolefinically unsaturated compound which is obtainable by adding two terminal olefins which bear the functional groups required to prepare the monoolefinically unsaturated compound containing at least two functional groups, or a saturated compound obtained by hydrogenating such a compound, b) a compound which is obtainable by adding more than two of the terminal olefins mentioned in a) or a compound obtained by hydrogenating such a compound, and c) a compound which contains a transition metal, is homogeneous with respect to the mixture and is suitable as a catalyst for preparing a monoolefinically unsaturated compound by adding two terminal olefins which bear the functional groups required to prepare the monoolefinically unsaturated compound containing at least two functional groups, by means of a semipermeable membrane to obtain a permeate and a retentate in such a way that the weight ratio of component b) to component c) in the mixture fed to the semipermeable membrane is smaller than in the retentate.

    4.
    发明专利
    未知

    公开(公告)号:BR0213869A

    公开(公告)日:2004-08-31

    申请号:BR0213869

    申请日:2002-10-29

    Applicant: BASF AG

    Abstract: A process is described for preparing acid formates in which methyl formate is reacted with water and a basic compound having a pK a of the conjugate acid of the corresponding dissociation state of >=3 measured at 25° C. in aqueous solution, the methanol formed is separated off and, optionally, the desired acid content is set by adding formic acid.

    5.
    发明专利
    未知

    公开(公告)号:BR0206982A

    公开(公告)日:2004-08-03

    申请号:BR0206982

    申请日:2002-01-26

    Applicant: BASF AG

    Abstract: A compound of formula (I) suitable as a catalyst or for the preparation of a catalyst system: L 1 -X-L 2 (I) is provided, in which X is a lower alkylene group, an arylene group or an alkarylene group; L 1 is in which Y 1 is oxygen, sulfur or N-R 17 , R 11 , R 12 , R 13 , R 14 , R 15 , R 16 and R 17 independently of one another being hydrogen, alkyl or aryl; and L 2 is in which Y 2 is oxygen, sulfur or N-R 27 , R 21 , R 22 , R 23 , R 24 , R 25 , R 26 and R 27 independently of one another being hydrogen, alkyl or aryl, it being possible for L 1 and L 2 to be identical or different.

    7.
    发明专利
    未知

    公开(公告)号:BRPI0411767A

    公开(公告)日:2006-08-08

    申请号:BRPI0411767

    申请日:2004-06-19

    Applicant: BASF AG

    Abstract: A process for removing a compound which bears at least two functional groups which are each independently selected from the group consisting of nitrile group, carboxylic acid group, carboxylic ester group and carboxamide group, from a mixture which comprises a compound which bears at least two functional groups which are each independently selected from the group consisting of nitrile group, carboxylic acid group, carboxylic ester group and carboxamide group, and a compound which is homogeneous with respect to the mixture and contains rhodium, by distillation.

    8.
    发明专利
    未知

    公开(公告)号:BRPI0409495A

    公开(公告)日:2006-05-02

    申请号:BRPI0409495

    申请日:2004-04-21

    Applicant: BASF AG

    Abstract: A process for hydrogenating a monoolefinically unsaturated compound which bears at least two functional groups which are each independently selected from the group consisting of nitrile group, carboxylic acid group, carboxylic ester group, carboxamide group to a saturated compound which bears the same at least two functional groups, in the presence of a rhodium-containing compound, as a catalyst, which is homogeneous with respect to the reaction mixture.

    9.
    发明专利
    未知

    公开(公告)号:BR0212590A

    公开(公告)日:2004-10-13

    申请号:BR0212590

    申请日:2002-09-26

    Applicant: BASF AG

    Abstract: A system comprising a diphosphine of the formula R 1 >P-(CH) n -PR 2 R 3 where R 1 is a divalent radical which together with the phosphorus atom to which it is linked forms an unsubstituted or substituted 2-phosphatricyclo[3.3.1.1{3,7}]decyl group or a derivative thereof in which one or more of the carbon atoms are replaced by heteroatoms, R 2 , R 3 are each, independently of one another, a monovalent radical having from 1 to 20 atoms or together form a divalent radical having from 2 to 20 atoms, n is 4 or 5, and a mixture of such diphosphines, and palladium or a palladium compound is suitable as carbonylation catalyst for the carbonylation of a conjugated diene.

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