公开(公告)号：FR1482615A

公开(公告)日：1967-05-26

申请号：FR64643

申请日：1966-06-08

Applicant: BASF AG

Inventor： GRASER FRITZ ,  KIEFER HANS

IPC: C09B1/30

公开(公告)号：FR1482396A

公开(公告)日：1967-05-26

申请号：FR64260

申请日：1966-06-06

Applicant: BASF AG

Inventor： KIEFER HANS ,  RAFF PAUL ,  SCHUSTER LUDWIG

IPC: C08K5/17

公开(公告)号：DK174850B1

公开(公告)日：2003-12-22

申请号：DK281789

申请日：1989-06-09

Applicant: BASF AG

Inventor： MEYER JOACHIM ,  BUEHLER WOLFGANG ,  GRIMMER JOHANNES ,  EIPPER GUNTER ,  KIEFER HANS ,  MARTIN CHRISTOPH

IPC: A23K1/16 ,  A23K20/174 ,  A23K40/10 ,  A23P1/02 ,  A61K9/14 ,  A61K31/519 ,  A61K31/525 ,  C07D475/14 ,  C12P17/18 ,  C12P25/00 ,  B01J2/16 ,  B01J2/04 ,  C07D475/02

Abstract: Process for producing microbially prepared riboflavin in the form of spray or microgranules which are free-flowing and non-dusting as feed additive by removing water from the discharge from microbial fermentations for preparing riboflavin, characterised in that the fermentation discharge is subjected to a) a spray fluidised bed drying b) a single-component nozzle atomiser drying or c) a disc atomiser drying without adding substantial amounts of binders to the fermentation discharge.

公开(公告)号：HU214095B

公开(公告)日：1998-03-02

申请号：HU9402669

申请日：1993-03-05

Applicant: BASF AG

Inventor： GRAFEN PAUL ,  JAEDICKE HAGEN ,  KIEFER HANS

IPC: B01J31/04 ,  C07B61/00 ,  C07D311/72

公开(公告)号：FI97054C

公开(公告)日：1996-10-10

申请号：FI913496

申请日：1991-07-19

Applicant: BASF AG

Inventor： KIEFER HANS ,  REUTEMANN WERNER

IPC: C07C51/50 ,  C07C51/48 ,  C07C53/02 ,  C07C53/08 ,  C07C53/122 ,  C07C57/07 ,  C07C231/02 ,  C07C233/04 ,  C07C233/05 ,  C07C233/06 ,  C07C233/07

公开(公告)号：CZ225094A3

公开(公告)日：1995-04-12

申请号：CZ225094

申请日：1993-03-05

Applicant: BASF AG

Inventor： GRAFEN PAUL ,  KIEFER HANS ,  JAEDICKE HAGEN

IPC: B01J31/04 ,  C07B61/00 ,  C07D311/72

公开(公告)号：HU9402669D0

公开(公告)日：1995-02-28

申请号：HU9402669

申请日：1993-03-05

Applicant: BASF AG

Inventor： GRAFEN PAUL ,  KIEFER HANS ,  JAEDICKE HAGEN

IPC: B01J31/04 ,  C07B61/00 ,  C07D311/72

公开(公告)号：IN174105B

公开(公告)日：1994-09-17

申请号：IN430MA1992

申请日：1992-07-15

Applicant: BASF AG

Inventor： CHRISTENSEN KURT BORCH ,  CHRISTENSEN SVEND E ,  KIEFER HANS ,  JENSEN-BAHM LARS ,  GRIMMER JOHANNES

IPC: C07D475/02

公开(公告)号：FI931487A

公开(公告)日：1993-10-04

申请号：FI931487

申请日：1993-04-01

Applicant: BASF AG

Inventor： KIEFER HANS ,  HUPFER LEOPOLD ,  LIPPERT FERDINAND

IPC: C07C51/02 ,  C07C53/02

Abstract: A process for preparing formic acid by thermal cleavage of quaternary ammonium formates of the general formula I (* CHEMICAL STRUCTURE *) (I) where R1, R2 and R3 are C1- to C14-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1-to C4-alkyl, with the proviso that the sum of the carbon atoms of R1, R2 and R3 in the quaternary ammonium formates I is 7 to 40, comprises carrying out the cleavage in the presence of secondary formamides of the general formula II (* CHEMICAL STRUCTURE *) (II) where R4 and R5 are C2- to C10-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1- to C4-alkyl, which formamides boil 30 degrees to 150 degrees C. lower than the tertiary amine of the general formula III (* CHEMICAL STRUCTURE *) (III) where R1, R2 and R3 have the abovementioned meanings, contained in the formate I.

公开(公告)号：CA1239424A

公开(公告)日：1988-07-19

申请号：CA480861

申请日：1985-05-06

Applicant: BASF AG

Inventor： HOHENSCHUTZ HEINZ ,  SCHMIDT JOHANNES E ,  KIEFER HANS

IPC: C07C53/02 ,  B01J31/00 ,  B01J31/02 ,  C07B61/00 ,  C07C27/00 ,  C07C27/02 ,  C07C51/00 ,  C07C51/09 ,  C07C67/00 ,  C07C51/377

Abstract: Anhydrous or substantially anhydrous formic acid is prepared by hydrolyzing methyl formate in the presence of a formamide and then obtaining the formic acid from the hydrolysis mixture by distillation, by a method in which the hydrolysis is carried out in the presence of 0.5-3 moles, per mole of methyl formate, of a water-soluble formamide of the general formula I where R1 and R2 are each alkyl or together form an alkylene group, giving a 5-membered to 7-membered ring, with the proviso that the sum of the carbon atoms in R1 and R2 is 5 or 6 and, in the case of an alkylene group, a carbon atom which is not directly bonded to the N atom can be replaced by an oxygen atom.