1.
    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.

    2.
    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of from 50 to 150° C. in the presence of a metal alkoxide as catalyst in a reactor, in which a gas stream is withdrawn from the reactor, entrained methyl formate is removed from this gas stream by condensation, and all or some of the remaining gas stream is returned to the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:BRPI0514558A

    公开(公告)日:2008-06-17

    申请号:BRPI0514558

    申请日:2005-08-22

    Applicant: BASF AG

    Abstract: The present invention relates to a process for preparing formic acid by thermally decomposing ammonium formates of tertiary amines A, wherein the tertiary amine A on which the ammonium formate is based has a boiling point at atmospheric pressure in the range from 105 to 175° C.

    6.
    发明专利
    未知

    公开(公告)号:BRPI0416179A

    公开(公告)日:2007-01-09

    申请号:BRPI0416179

    申请日:2004-11-05

    Applicant: BASF AG

    Abstract: A process is proposed for preparing acid formates in which a liquid stream I comprising formic acid and a liquid stream II comprising a metal formate are prepared, the liquid streams I and II are fed to a rectification column in such a manner that a higher or identical feed point to the rectification column is chosen for the liquid stream II than for the liquid stream I, the liquid streams I and II are mixed in the rectification column, with water being removed overhead from the rectification column and a bottoms stream comprising the acid formate is taken off from the rectification column, which comprises the bottoms stream being produced as melt comprising less than 0.5% by weight of water.

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