公开(公告)号：DE4101380A1

公开(公告)日：1992-07-23

申请号：DE4101380

申请日：1991-01-18

Applicant: BASF AG

Inventor： HAHN ERWIN DR ,  GLAS GUENTHER DR ,  GUENTHERT PAUL DR

IPC: C07D265/22

Abstract: Production of 4H-3,1-benzoxazine-4-ones of formula (I) in which: R is hydrogen, C1-C4-alkyl, C1-C4-alkoxy, carboxyl, sulpho, nitro or halogen; R is C1-C20-alkyl, phenyl or phenylalkyl with 1 to 4 C atoms in the alkyl group, whereby a phenyl nucleus may be substituted by one or two C1-C4-alkyl groups, C1-C3-halogen alkyl groups, C1-C4-alkoxy groups, C1-C3-halogen alkoxy groups, C1-C4-alkyl mercapto groups, C1-C3-halogen alkyl mercapto groups, carboxyl groups, sulpho groups, C1-C4-alkyl sulphonyl groups, C1-C3-halogen alkyl sulphonyl groups, nitro groups or halogen atoms; and n is 1 or 2; by the reaction of isato acid anhydrides of formula (II) with acyl halides of formula (III) in which X is chlorine or bromine, by conducting the reaction at an outside temperature of 215 to 280 DEG C and causing the reaction components (II and III) to react together for at least 4 hours at this temperature.

公开(公告)号：DE3911951A1

公开(公告)日：1989-11-02

申请号：DE3911951

申请日：1989-04-12

Applicant: BASF AG

Inventor： BENDER HERBERT DR ,  GLAS GUENTHER DR

IPC: C07C51/363 ,  C07C255/51 ,  C07D209/48

Abstract: Process for preparing 4-chlorophthalic acid derivatives of the general formula I where R and R are each cyano or together or by reacting phthalic acid derivatives of the general formula II with chlorine in the gas phase at temperatures from 300 to 700@C and pressures from 0.1 to 50 bar, characterised in that the reaction is carried out in the presence of a catalyst selected from the group consisting of activated carbon or doped activated carbons having a specific surface area from 100 to 1200 m /g, coke or doped cokes having a specific surface area of from 0.1 to 100 m /g, zeolites having an internal pore diameter from 2 to 20 ANGSTROM , metal chlorides and/or metal oxide-doped aluminium oxides or silica gels or sulphates, acetates and/or nitrates of subgroups 1, 2 and 8 of the Periodic Table on activated carbon, coke, aluminium oxide or silica gel and with a molar ratio of chlorine to phthalic acid derivative II from 0.7:1 to 5:1.

公开(公告)号：DE19638595A1

公开(公告)日：1998-03-26

申请号：DE19638595

申请日：1996-09-20

Applicant: BASF AG

Inventor： GLAS GUENTHER DR ,  SCHUHMACHER RUDOLF DR ,  LORENCAK PRIMOZ DR

IPC: B01D19/04 ,  C09K23/00 ,  D21H21/12

Abstract: Antifoam based on oil-in-water emulsions, contains 5-60 wt. % oil phase comprising (a) 200 deg C. at 1013 mbar and (d) paraffins with a melting point of 60-90 deg C.

公开(公告)号：DE4404589A1

公开(公告)日：1994-08-25

申请号：DE4404589

申请日：1994-02-12

Applicant: BASF AG

Inventor： GRUND CLEMENS DR ,  GLAS GUENTHER DR ,  GUENTHERT PAUL DR ,  REICHELT HELMUT DR ,  BECKER RAINER DR ,  LANGE ARNO DR ,  FRIEDRICH KLAUS DR

IPC: B01J23/22 ,  C07B61/00 ,  C07C253/28 ,  C07C255/51 ,  C07C255/53 ,  C07C255/54 ,  C07C255/58 ,  C07D209/48 ,  C07D295/14 ,  C07D295/155

Abstract: Process for the preparation of dicyanobenzenes of the formula in which X is hydroxyl, C1-C4-alkoxy, nitro or optionally substituted amino, in which a xylene of the formula in which X has the abovementioned meaning is oxidised with oxygen in the presence of ammonia and of a catalyst at a temperature of 400 to 500 DEG C.