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公开(公告)号：DE19524584A1
公开(公告)日：1997-01-09
申请号：DE19524584
申请日：1995-07-06
Applicant: BASF AG
Inventor： GRIMMER JOHANNES , MARTIN CHRISTOPH DR
IPC: B01J21/04 , C07B53/00 , C07B61/00 , C07D307/92 , C11B9/00
Abstract: Stereospecific process for the prodn. of (-)3a,6,6,9a-tetramethyl-perhydronaphtho(2,1-b)furan of formula (Ia) comprises dehydration and cyclisation of molten decahydro-2-hydroxy-2,5,5,8a-tetramethyl-1-naphthalene ethanol (II) (ambroxdiol) in the presence of 10-100 wt.%, (based on (II)) of a active acidic alumina at 80-200 degrees C. The acidic alumina is commercially available for column chromatography.
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公开(公告)号：DE59107748D1
公开(公告)日：1996-06-05
申请号：DE59107748
申请日：1991-06-25
Applicant: BASF AG
Inventor： GRIMMER JOHANNES , KIEFER HANS DR , MARTIN CHRISTOPH DR
IPC: C07D475/14 , C12P17/18
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公开(公告)号：DE59009375D1
公开(公告)日：1995-08-10
申请号：DE59009375
申请日：1990-12-22
Applicant: BASF AG
Inventor： FAUST TILLMANN DR , MEYER JOACHIM DR , WELLINGHOFF GEORG DR , GOESELE WALTER DR , MARTIN CHRISTOPH DR , GRIMMER JOHANNES
IPC: C07D475/14 , C12P17/18 , C12P25/00
Abstract: Riboflavin is removed from fermentation suspensions by them being heated at from 50 DEG to 90 DEG C. for from 1 to 3 hours, than cooled to from 0 DEG to 30 DEG C. over a period of from 1 to 5 hours, and subsequently being centrifuged to give a sediment fraction and liquid fraction in such a way that the sediment fraction contains predominantly riboflavin crystals as solid, and the liquid fraction contains virtually no crystalline riboflavin, and, where appropriate, resuspending the sediment fraction in from 0.5 to 2 parts by volume of water per part by volume of sediment fraction and repeating procedure c.
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公开(公告)号：DK0457075T3
公开(公告)日：1996-03-11
申请号：DK91106676
申请日：1991-04-25
Applicant: BASF AG
Inventor： GRIMMER JOHANNES , KIEFER HANS DR , MARTIN CHRISTOPH DR
IPC: A61K9/16 , A61K31/525 , B01J2/04 , C07D475/14
Abstract: A process for the preparation of free-flowing, dust- and binder-free riboflavine spray granulates or microgranulates from finely divided pure riboflavine, characterised in that an aqueous or water-containing suspension of the pure finely divided riboflavine is subjected to a) fluidised bed spray drying, b) single component nozzle atomiser drying or c) disc atomiser drying, in particular fluidised bed spray drying, without binder being added to the suspension, and the riboflavine spray granulates or microgranulates obtainable according to this process.
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公开(公告)号：DE3819745A1
公开(公告)日：1989-12-14
申请号：DE3819745
申请日：1988-06-10
Applicant: BASF AG
Inventor： MEYER JOACHIM DR , BUEHLER WOLFGANG DR , GRIMMER JOHANNES , EIPPER GUNTER , KIEFER HANS DR , MARTIN CHRISTOPH DR
IPC: A23K1/16 , A23K20/174 , A23K40/10 , A23P1/02 , A61K9/14 , A61K31/519 , A61K31/525 , C07D475/14 , C12P17/18 , C12P25/00
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.
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Patent Agency Ranking
公开(公告)号：DE3560360D1
公开(公告)日：1987-08-27
申请号：DE3560360
申请日：1985-09-07
Applicant: BASF AG
Inventor： BOTT KASPAR DR , BOEHM WALTER DR , FRITZ GERHARD DR , MARTIN CHRISTOPH DR , SIEGEL HARDO DR
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公开(公告)号：DE3433400A1
公开(公告)日：1986-03-20
申请号：DE3433400
申请日：1984-09-12
Applicant: BASF AG
Inventor： BOTT KASPAR DR , BOEHM WALTER DR , FRITZ GERHARD DR , MARTIN CHRISTOPH DR , SIEGEL HARDO DR
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公开(公告)号：DE3163384D1
公开(公告)日：1984-06-07
申请号：DE3163384
申请日：1981-07-10
Applicant: BASF AG
Inventor： LUNGERSHAUSEN ROLF DR , MARTIN CHRISTOPH DR , MARCINOWSKI STEFAN DR , SIEGEL HARDO DR , KUESTERS WERNER DR
Abstract: A process for the preparation of D-carbamyl- alpha -aminoacids of the formula where R has the meanings given in the description, by enzymatic cleavage of the corresponding hydantoins by means of thermophilic, non-sporulating hydantoin-cleaving micro-organisms or of extracts therefrom.
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公开(公告)号：DE58904314D1
公开(公告)日：1993-06-17
申请号：DE58904314
申请日：1989-06-06
Applicant: BASF AG
Inventor： MEYER JOACHIM DR , BUEHLER WOLFGANG DR , GRIMMER JOHANNES , EIPPER GUNTER , KIEFER HANS DR , MARTIN CHRISTOPH DR
IPC: A23K1/16 , A23K20/174 , A23K40/10 , A23P1/02 , A61K9/14 , A61K31/519 , A61K31/525 , C07D475/14 , C12P17/18 , C12P25/00
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.
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公开(公告)号：DE4021274A1
公开(公告)日：1992-01-09
申请号：DE4021274
申请日：1990-07-04
Applicant: BASF AG
Inventor： GRIMMER JOHANNES , KIEFER HANS DR , MARTIN CHRISTOPH DR
IPC: C07D475/14 , C12P17/18
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