公开(公告)号：BR9915651A

公开(公告)日：2001-08-07

申请号：BR9915651

申请日：1999-11-22

Applicant: BASF AG

Inventor： EIERMANN MATTHIAS ,  TRAGUT CHRISTIAN ,  EBEL KLAUS

IPC: C07C303/16 ,  C07C309/04

Abstract: The invention relates to a process for the prepartaion of alkanesulfonic acids, comprising the following steps:(a) oxidation of alkylmercaptans and/or dialkyl disulfides and/or dialkyl polysulfides having from three to nine sulfur atoms with nitric acid to form alkanesulfonic acids, water, nitrogen oxides and other byproducts,(b) regeneration of the nitrogen oxides obtained from step (a) with oxygen to give nitric acid and recycling of the nitric acid to step (a),where steps (a) and (b) are carried out in reaction chambers separate from one another.

公开(公告)号：PL181432B1

公开(公告)日：2001-07-31

申请号：PL32106495

申请日：1995-12-16

Applicant: BASF AG

Inventor： MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FLICK KLEMENS ,  EBEL KLAUS ,  WITZEL TOM ,  FISCHER ROLF ,  HARDER WOLFGANG ,  REHFINGER ALWIN

IPC: B01J23/76 ,  B01J23/89 ,  B01J23/889 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

公开(公告)号：GR3033456T3

公开(公告)日：2000-09-29

申请号：GR20000401145

申请日：2000-05-19

Applicant: BASF AG

Inventor： MELDER JOHANN-PETER ,  SCHNURR WERNER ,  FLICK KLEMENS ,  EBEL KLAUS ,  WITZEL TOM ,  FISCHER ROLF ,  HARDER WOLFGANG ,  REHFINGER ALWIN

IPC: B01J23/76 ,  B01J23/889 ,  B01J23/89 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

公开(公告)号：PT800508E

公开(公告)日：2000-07-31

申请号：PT95941718

申请日：1995-12-16

Applicant: BASF AG

Inventor： EBEL KLAUS ,  TOM WITZEL DR ,  SCHNURR WERNER ,  FISCHER ROLF ,  HARDER WOLFGANG ,  MELDER JOHANN-PETER ,  FLICK KLEMENS ,  REHFINGER ALWIN

IPC: B01J23/76 ,  B01J23/889 ,  B01J23/89 ,  B01J27/18 ,  B01J37/02 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24

Abstract: Aliphatic alpha,omega-aminonitriles are prepared by partial hydrogenation of aliphatic alpha,omega-dinitriles at elevated temperatures and superatmospheric pressure in the presence of a solvent and of a catalyst by a process which comprises using a catalyst which (a) contains a compound based on a metal selected from the group consisting of nickel, cobalt, iron, ruthenium and rhodium and (b) contains from 0.01 to 25% by weight, based on (a), of a promoter based on a metal selected from the group consisting of palladium, platinum, iridium, osmium, copper, silver, gold, chromium, molybdenum, tungsten, manganese, rhenium, zinc, cadmium, lead, aluminum, tin, phosphorus, arsenic, antimony, bismuth and rare earth metals and (c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or on an alkaline earth metal. with the proviso that the component (a) is not based on iron or iron and one of the metals selected from the group consisting of cobalt, ruthenium and rhodium when (b) is a promoter based on a metal selected from the group consisting of titanium, manganese, chromium and molybdenum, and with the further proviso that, when a compound based on only ruthenium or rhodium or ruthenium and rhodium or nickel and rhodium is selected as component (a), the promoter (b) may be dispensed with.

公开(公告)号：DE19858360A1

公开(公告)日：2000-06-21

申请号：DE19858360

申请日：1998-12-17

Applicant: BASF AG

Inventor： GROENING CARSTEN ,  KEMPER REINHARD ,  FREDE MARKUS ,  EBEL KLAUS

IPC: C07D207/32 ,  C07D207/323 ,  C07D207/416

Abstract: In the preparation of 2,4-dimethyl-pyrrole (I) by hydrolysis of 2,4-dimethyl-3,5-bis-alkoxycarbonyl-pyrrole (II) to the dicarboxylic acid (III) with strong alkali and thermal decarboxylation of (III), (II) is heated under reflux with 10-30% aqueous alkali hydroxide, and then neutralized with acid. Heating under reflux is continued to complete decarboxylation.

公开(公告)号：DE19858352A1

公开(公告)日：2000-06-21

申请号：DE19858352

申请日：1998-12-17

Applicant: BASF AG

Inventor： GROENING CARSTEN ,  KEMPER REINHARD ,  FREDE MARKUS ,  EBEL KLAUS

IPC: C07D241/06 ,  B01J23/44 ,  C07B61/00 ,  C07D207/34 ,  C07D207/416

Abstract: In the preparation of 2,4-dimethyl-3,5-bis-alkoxycarbonyl-pyrroles (I) by nitrosing an alkyl acetoacetate (II) to the alkyl 2-nitrosoacetoacetate (III), reducing (III) to the amine (IV) and ring-closing condensation with unsubstituted (II), (III) is hydrogenated with hydrogen in the presence of a noble metal catalyst and condensed with (II) without isolating (IV).

公开(公告)号：CZ76899A3

公开(公告)日：2000-01-12

申请号：CZ76899

申请日：1997-08-21

Applicant: BASF AG

Inventor： FLICK KLEMENS ,  FISCHER ROLF ,  EBEL KLAUS ,  SCHNURR WERNER ,  VOIT GUIDO

IPC: B01J23/75 ,  B01J23/74 ,  B01J23/76 ,  B01J25/00 ,  C07B61/00 ,  C07C253/30 ,  C07C255/24 ,  C07C255/25

Abstract: PCT No. PCT/EP97/04547 Sec. 371 Date Jan. 7, 1999 Sec. 102(e) Date Jan. 7, 1999 PCT Filed Aug. 21, 1997 PCT Pub. No. WO98/11058 PCT Pub. Date Mar. 19, 1998A catalyst suitable for preparing aliphatic alpha, omega-aminonitriles by partial hydrogenation of aliphatic dinitriles comprises (a) metallic cobalt, a cobalt compound or a mixture thereof, the proportion of metallic cobalt based on (a) being from 20 to 100% by weight, (b) from 10 to 70% by weight, based on (a), of metallic iron, iron oxide, a further iron compound or a mixture thereof, the proportion of iron oxide based on (b) being from 20 to 100% by weight, (c) from 0 to 1% by weight, based on (a), of a compound based on an alkali metal, an alkaline earth metal or zinc.

公开(公告)号：DE59507208D1

公开(公告)日：1999-12-16

申请号：DE59507208

申请日：1995-06-29

Applicant: BASF AG

Inventor： SCHROEDER JUERGEN ,  EBEL KLAUS

IPC: C07D309/18

公开(公告)号：CZ9900795A3

公开(公告)日：1999-11-17

申请号：CZ79599

申请日：1997-09-01

Applicant: BASF AG

Inventor： EBEL KLAUS ,  FISCHER ROLF ,  FLICK KLEMENS ,  MERGER MARTIN ,  VOIT GUIDO

IPC: B01J23/78 ,  C07B61/00 ,  C07C209/48 ,  C07C211/12 ,  C07C253/30 ,  C07C255/24

CPC classification number: C07C255/24 ,  C07C209/48 ,  C07C211/12 ,  C07C253/30

公开(公告)号：CZ79599A3

公开(公告)日：1999-11-17

申请号：CZ79599

申请日：1997-09-01

Applicant: BASF AG

Inventor： EBEL KLAUS ,  FISCHER ROLF ,  FLICK KLEMENS ,  MERGER MARTIN ,  VOIT GUIDO

IPC: B01J23/78 ,  C07B61/00 ,  C07C209/48 ,  C07C211/12 ,  C07C253/30 ,  C07C255/24

Abstract: A process for preparing aliphatic alpha,omega-amino nitrites by partial hydrogenation of aliphatic alpha,omega-dinitriles in the presence of a catalyst, wherein the catalyst used for the partial hydrogenation comprises(a) iron or a compound based on iron or mixtures thereof and(b) from 0.01 to 5% by weight, based on (a), of a promoter based on 2,3,4 or 5 elements selected from the group consisting of aluminum, silicon, zirconium, titanium and vanadium and(c) from 0 to 5% by weight, based on (a), of a compound based on an alkali metal or alkaline earth metal.