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公开(公告)号:FI82924C
公开(公告)日:1991-05-10
申请号:FI841946
申请日:1984-05-15
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , HARTMANN HORST , IRNICH RUDOLF , BUELOW HORST
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公开(公告)号:NO157534C
公开(公告)日:1988-04-06
申请号:NO842152
申请日:1984-05-30
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , HARTMANN HORST , IRNICH RUDOLF , BUELOW HORST
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公开(公告)号:FI841946A
公开(公告)日:1984-12-01
申请号:FI841946
申请日:1984-05-15
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , HARTMANN HORST , IRNICH RUDOLF , BUELOW HORST
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公开(公告)号:FI841946A0
公开(公告)日:1984-05-15
申请号:FI841946
申请日:1984-05-15
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , HARTMANN HORST , IRNICH RUDOLF , BUELOW HORST
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公开(公告)号:NO149470B
公开(公告)日:1984-01-16
申请号:NO794080
申请日:1979-12-13
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , HOFFMANN HERWIG , KRATZER OTTO , IRNICH RUDOLF
Abstract: A process for the production of anhydrous or substantially anhydrous formic acid by hydrolysis of methyl formate which is carried out in a column having an upper fractionating section, a middle hydrolysis section and a lower extraction section and in which (a) the hydrolysis is carried out in the middle section of the columm, with water and methyl formate in countercurrent, (b) the resulting formic acid is extracted, in the lower section of the column, by means of a carboxylic acid amide which is fed into the lower end of the middle section of the column, (c) the extract phase, consisting in the main of formic acid and the carboxylic acid amide, is distillatively dehydrated, or substantially dehydrated, in the lower section of the column, (d) the methanol and uncovered methyl formate are removed by fractional distillation in the upper section of the column and (e) the pure formic acid or concentrated aqueous formic acid is distilled from the anhydrous or substantially anhydrous extract phase in a second column, leaving the carboxylic acid amide.
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公开(公告)号:FI820118L
公开(公告)日:1982-08-20
申请号:FI820118
申请日:1982-01-14
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , HOFFMANN HERWIG , IRNICH RUDOLF , KRATZER OTTO
IPC: C07C231/02 , C07C20060101 , C07C67/00 , C07C231/00 , C07C233/03 , C07C
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公开(公告)号:FI84259C
公开(公告)日:1991-11-11
申请号:FI851003
申请日:1985-03-13
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , MITTELSTAEDT ERICH , IRNICH RUDOLF
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公开(公告)号:HU202181B
公开(公告)日:1991-02-28
申请号:HU206589
申请日:1989-05-02
Applicant: BASF AG
Inventor: DECKER MARTIN , FRANZISCHKA WOLFGANG , IRNICH RUDOLF , SAUERWALD MANFRED
Abstract: Acid chlorides are prepared by reaction of carboxylic acids or anhydrides thereof with phosgene in the presence of a carboxamide of the formula I in which R denotes a radical of the formulae R denotes an alkyl radical having 2 to 9 carbon atoms, R denotes an alkyl radical having 1 to 9 carbon atoms, R and R denote hydrogen atoms or alkyl radicals having 1 to 9 carbon atoms, the two radicals R and R can also represent a hydrocarbon radical which completes the molecule portion to give a heterocycle, it being possible for the alkyl and hydrocarbon radicals mentioned additionally to contain substituents which are inert under the reaction conditions.
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公开(公告)号:FI851003L
公开(公告)日:1985-09-29
申请号:FI851003
申请日:1985-03-13
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , MITTELSTAEDT ERICH , IRNICH RUDOLF
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公开(公告)号:FI851003A0
公开(公告)日:1985-03-13
申请号:FI851003
申请日:1985-03-13
Applicant: BASF AG
Inventor: BOTT KASPAR , KAIBEL GERD , MITTELSTAEDT ERICH , IRNICH RUDOLF
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