公开(公告)号：DE19701737A1

公开(公告)日：1998-07-23

申请号：DE19701737

申请日：1997-01-20

Applicant: BASF AG

Inventor： AICHINGER HEINRICH DR ,  FRIED MICHAEL DR ,  NESTLER GERHARD DR ,  HERBST HOLGER DR

IPC: C07C67/08 ,  C07C67/327 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54 ,  C07C67/48

Abstract: The invention concerns a process for the esterification of (meth)acrylic acid with an alkanol, oxyesters formed as a by-product of esterification being cleaved in turn in an acid-catalysed manner by the addition of monomeric and/or oligomeric (meth)acrylic acid and water.

公开(公告)号：CZ270096A3

公开(公告)日：1998-05-13

申请号：CZ270096

申请日：1996-09-16

Applicant: BASF AG

Inventor： AICHINGER HEINRICH DR ,  FRIED MICHAEL DR ,  NESTLER GERHARD DR

IPC: B01J27/02 ,  B01J31/02 ,  C07C27/02 ,  C07C67/08 ,  C07C67/327 ,  C07C67/54 ,  C07C67/60 ,  C07C69/54

Abstract: A process for the esterification of (meth)acrylic acid with an alkanol in presence of a catalyst, in which unreacted starting cpds. and the required ester are sepd. by distn. and a bottom prod. contg. an oxy-ester is obtd. The process involves taking off the bottom prod., sepn. of the oxy-ester by distn. and cleavage of the distillate in presence of acid (I) at elevated temp.

公开(公告)号：DE59501437D1

公开(公告)日：1998-03-19

申请号：DE59501437

申请日：1995-09-30

Applicant: BASF AG

Inventor： DOCKNER TONI DR ,  LERMER HELMUT DR ,  BITTINS KLAUS DR ,  NESTLER GERHARD DR ,  BRAUCH GUNDO DR

IPC: B01J27/02 ,  C07B61/00 ,  C07C67/08 ,  C07C67/60 ,  C07C69/54

Abstract: A process is claimed for the prodn. of 1,4-butanediol mono-(meth)acrylate (I) by esterification of (meth)acrylic acid (MAA) with 1,4-butanediol (BD). In this process the aq. soln. of unreacted BD which is obtd. is worked up by converting the BD into tetrahydrofuran (THF) and sepg. the THF.

公开(公告)号：CZ9602701A3

公开(公告)日：1997-06-11

申请号：CZ270196

申请日：1996-09-16

Applicant: BASF AG

Inventor： AICHINGER HEINRICH DR ,  GEISENDORFER MATHIAS DR ,  HERBST HOLGER DR ,  NESTLER GERHARD DR

IPC: C07C27/02 ,  C07C67/08 ,  C07C67/327 ,  C07C67/60 ,  C07C69/54

CPC classification number: C07C67/327 ,  C07C67/08 ,  C07C67/60 ,  C07C69/54

公开(公告)号：CZ16096A3

公开(公告)日：1996-08-14

申请号：CZ16096

申请日：1996-01-18

Applicant: BASF AG

Inventor： HERBST HOLGER DR ,  NESTLER GERHARD DR ,  HAMMON ULRICH DR

IPC: C07C57/04 ,  C07C51/44 ,  C07C57/05 ,  C07C57/07

Abstract: In the sepn. of (meth)acrylic acid (I) from mixts. by rectification, in which (I) is discharged from the column at a point higher than the inlet for the mixt., the refluxing liq. is removed in at least one position of the column, the oligomerised and/or polymerised (I) is sepd. and the liq. is recycled to the column.

公开(公告)号：DE3269747D1

公开(公告)日：1986-04-10

申请号：DE3269747

申请日：1982-12-16

Applicant: BASF AG

Inventor： MATTNER OTTO ,  MERGER FRANZ DR ,  NESTLER GERHARD DR ,  TOWAE FRIEDRICH DR

IPC: C07C125/04

公开(公告)号：DE3163861D1

公开(公告)日：1984-07-05

申请号：DE3163861

申请日：1981-06-19

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  NESTLER GERHARD DR

IPC: C08G73/00 ,  C08G73/02 ,  C07C85/24 ,  C07C87/50

公开(公告)号：DE3061995D1

公开(公告)日：1983-03-24

申请号：DE3061995

申请日：1980-05-16

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  NESTLER GERHARD DR

IPC: C07B61/00 ,  B01J31/02 ,  B01J31/10 ,  C07C271/06 ,  C07C125/065

公开(公告)号：DE3061270D1

公开(公告)日：1983-01-13

申请号：DE3061270

申请日：1980-07-15

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  NESTLER GERHARD DR

IPC: C07C269/00 ,  B01J31/02 ,  C07C67/00 ,  C07C239/00 ,  C07C271/28 ,  C08G12/10 ,  C07C125/073 ,  C07C125/077

Abstract: A process for preparing a methylene-bis-(4-phenylcarbamic acid ester), wherein an N-phenylcarbamic acid ester is reacted with an acylal in the presence of an acid at from 50 DEG to 150 DEG C.

公开(公告)号：MY139958A

公开(公告)日：2009-11-30

申请号：MYPI20023634

申请日：2002-09-27

Applicant: BASF AG

Inventor： NESTLER GERHARD DR ,  SCHROEDER JUERGEN DR

IPC: C07C51/16 ,  B01J23/00 ,  B01J23/887 ,  B01J23/888 ,  B01J35/00 ,  C07C51/25

Abstract: ACRYLIC ACID IS PREPARED FROM PROPENE BY MEANS OF GAS-PHASE OXIDATION BY A PROCESS IN WHICH A STARTING GAS MIXTURE WHICH CONTAINS PROPENE AND STEAM AND WHOSE MOLAR PROPENE/STEAM RATIO IS  1 AND WHOSE PROPENE CONTENT IS ≤ 5% IS PASSED AT ELEVATED TEMPERATURES THROUGH A FIXED CATALYST BED COMPRISING SUCCESSIVE CATALYST PART-BEDS A AND B, THE PART-BED A PASSED THROUGH FIRST CONTAINING, AS ACTIVE MATERIAL, A MIXED OXIDE CONTAINING THE ELEMENTS MO, BI AND FE AND THE PART-BED B CONTAINING, AS ACTIVE MATERIAL, A MIXED OXIDE CONTAINING THE ELEMENTS MO AND V, IN A MANNER SUCH THAT AT LEAST 96.5 MOL % OF PROPENE ARE CONVERTED IN A SINGLE PASS THROUGH PART-BED A.