公开(公告)号：DE69802755D1

公开(公告)日：2002-01-17

申请号：DE69802755

申请日：1998-08-11

Applicant: RHONE POULENC CHIMIE

Inventor： MARION PHILIPPE ,  METIVIER PASCAL

IPC: C07C201/16

Abstract: A treatment process is claimed of a flux obtained from (1) a dinitration reaction of an aromatic compound with a nitrating mixture containing nitric acid, then (2) separation of the nitrating acid; the flux comprises a dinitrated aromatic compound in which a fraction of the nitrating acid remains. The process comprises the following stages:- a) distillation or stripping of the flux; b) recycling of the nitric acid recovered at the column head in the nitration process; c) treatment of the flux free of nitric acid containing dinitrated aromatics, by washing.

公开(公告)号：DE69612018D1

公开(公告)日：2001-04-12

申请号：DE69612018

申请日：1996-11-29

Applicant: RHONE POULENC CHIMIE

Inventor： CHAMBOST BERNARD ,  MARION PHILIPPE ,  MATHIEU CORINNE

IPC: C07C209/36 ,  C07C211/51

Abstract: PCT No. PCT/FR96/01893 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed Nov. 29, 1996 PCT Pub. No. WO97/20804 PCT Pub. Date Jun. 12, 1997A method for hydrogenating aromatic nitro compounds by reacting at least one aromatic nitro compound with hydrogen in two adiabatically operated fixed-bed catalytic reactors arranged in series, wherein one part of the reaction mixture from the first reactor is recirculated therein while the other part is fed into the second reactor.

公开(公告)号：AU4265396A

公开(公告)日：1996-06-19

申请号：AU4265396

申请日：1995-11-22

Applicant: RHONE POULENC CHIMIE

Inventor： CORDIER GEORGES ,  GUIDOT GILBERT ,  MARION PHILIPPE ,  MERCIER CLAUDE

IPC: C07B61/00 ,  C07C209/36 ,  C07C211/52

Abstract: A new process for obtaining cpds. of general formula (I) comprises submitting a cpd. of formula (II) to catalytic hydrogenation in a liq. medium contg. a catalyst, under pressure of H2, to effect catalytic redn. and (if need be) a hydrogenolysis reaction. The cpd. (II) is added progressively to the medium in such a way that the content of (II) remains less than or equal to 1000 ppm (wt.), to selectively form cpd. (I). n = 1 to 5; Z = a radical stable in catalytic hydrogenation conditions; p = less than 5-n; X = a hydrogenolysable radical; q = 0 to (5-(n+p)).

公开(公告)号：FR2714666B1

公开(公告)日：1996-03-01

申请号：FR9315988

申请日：1993-12-31

Applicant: RHONE POULENC CHIMIE

Inventor： JOULAK FAOUZI ,  LE BRIS LOUIS ,  MARION PHILIPPE

IPC: C02F1/66 ,  C02F9/00 ,  C07C201/16 ,  C02F1/26

Abstract: Removal of hydroxynitroaromatic cpds. (I) from mixts. of nitroaromatic cpds. and (I) comprises: (a) washing the mixt. with an aq. soln. of a neutralising agent; (b) separating the organic and aq. phases; (c) recycling the aq. phase to step (a); and (d) periodically removing a purge stream of the aq. phase for destruction (e.g. incineration).

公开(公告)号：DE69909874T2

公开(公告)日：2004-01-22

申请号：DE69909874

申请日：1999-04-20

Applicant: RHONE POULENC CHIMIE

Inventor： MARION PHILIPPE ,  MONTARSOLO STEPHANE

IPC: C07C209/84

公开(公告)号：DE69802755T2

公开(公告)日：2002-08-08

申请号：DE69802755

申请日：1998-08-11

Applicant: RHONE POULENC CHIMIE

Inventor： MARION PHILIPPE ,  METIVIER PASCAL

IPC: C07C201/16

Abstract: A treatment process is claimed of a flux obtained from (1) a dinitration reaction of an aromatic compound with a nitrating mixture containing nitric acid, then (2) separation of the nitrating acid; the flux comprises a dinitrated aromatic compound in which a fraction of the nitrating acid remains. The process comprises the following stages:- a) distillation or stripping of the flux; b) recycling of the nitric acid recovered at the column head in the nitration process; c) treatment of the flux free of nitric acid containing dinitrated aromatics, by washing.

公开(公告)号：DE69801067T2

公开(公告)日：2002-03-21

申请号：DE69801067

申请日：1998-03-05

Applicant: RHONE POULENC CHIMIE

Inventor： COUDRET JEAN-LUC ,  MARION PHILIPPE

IPC: C02F1/70 ,  C02F9/00 ,  C02F1/58

公开(公告)号：DE69612018T2

公开(公告)日：2001-08-02

申请号：DE69612018

申请日：1996-11-29

Applicant: RHONE POULENC CHIMIE

Inventor： CHAMBOST BERNARD ,  MARION PHILIPPE ,  MATHIEU CORINNE

IPC: C07C209/36 ,  C07C211/51

Abstract: PCT No. PCT/FR96/01893 Sec. 371 Date Nov. 12, 1998 Sec. 102(e) Date Nov. 12, 1998 PCT Filed Nov. 29, 1996 PCT Pub. No. WO97/20804 PCT Pub. Date Jun. 12, 1997A method for hydrogenating aromatic nitro compounds by reacting at least one aromatic nitro compound with hydrogen in two adiabatically operated fixed-bed catalytic reactors arranged in series, wherein one part of the reaction mixture from the first reactor is recirculated therein while the other part is fed into the second reactor.

公开(公告)号：HU216575B

公开(公告)日：1999-07-28

申请号：HU9402887

申请日：1994-10-06

Applicant: RHONE POULENC CHIMIE

Inventor： CORDIER GEORGES ,  DAMON JEAN-PIERRE ,  FOUILLOUX PIERRE ,  MARION PHILIPPE

IPC: B01J25/00 ,  B01J25/02 ,  C07B61/00 ,  C07C209/36 ,  C07C211/52 ,  C07C215/76 ,  C07C217/84 ,  C07C217/86 ,  C07C217/90 ,  C07C209/32

公开(公告)号：DE69508428T2

公开(公告)日：1999-07-22

申请号：DE69508428

申请日：1995-11-29

Applicant: RHONE POULENC CHIMIE

Inventor： CORDIER GEORGES ,  GUIDOT GILBERT ,  MARION PHILIPPE ,  MERCIER CLAUDE

IPC: C07B61/00 ,  C07C209/36 ,  C07C211/52

Abstract: A new process for obtaining cpds. of general formula (I) comprises submitting a cpd. of formula (II) to catalytic hydrogenation in a liq. medium contg. a catalyst, under pressure of H2, to effect catalytic redn. and (if need be) a hydrogenolysis reaction. The cpd. (II) is added progressively to the medium in such a way that the content of (II) remains less than or equal to 1000 ppm (wt.), to selectively form cpd. (I). n = 1 to 5; Z = a radical stable in catalytic hydrogenation conditions; p = less than 5-n; X = a hydrogenolysable radical; q = 0 to (5-(n+p)).