公开(公告)号：DE19536191A1

公开(公告)日：1997-04-03

申请号：DE19536191

申请日：1995-09-28

Applicant: BASF AG

Inventor： AICHINGER HEINRICH DR ,  GEISENDOERFER MATTHIAS DR ,  HERBST HOLGER DR ,  NESTLER GERHARD DR

IPC: C07C27/02 ,  C07C67/08 ,  C07C67/327 ,  C07C67/60 ,  C07C69/54 ,  C07C67/48 ,  C07C69/67 ,  C07C69/708

Abstract: In the esterification of (meth)acrylic acid with an alkanol in the presence of an acid esterification catalyst, in which unreacted starting materials and the (meth)acrylic ester are sepd. by distn., a sump prod. (I) contg. oxy esters (II) is formed. The novelty is that (I) is sepd. and heated at 150-250 degrees C in the presence of acid and at a pressure at which prods. formed by cracking (II) vaporise directly.

公开(公告)号：CZ9503291A3

公开(公告)日：1996-07-17

申请号：CZ329195

申请日：1995-12-13

Applicant: BASF AG

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

IPC: C07C57/055 ,  C07C51/44 ,  C07C51/46 ,  C07C57/07 ,  C07C57/075

CPC classification number: C07C51/44 ,  Y10S203/22 ,  C07C57/04

公开(公告)号：CZ302195A3

公开(公告)日：1996-06-12

申请号：CZ302195

申请日：1995-11-16

Applicant: BASF AG

Inventor： HERBST HOLGER DR ,  NESTLER GERHARD DR ,  DARLINGZON JERRY ,  MARTAN HANS DR

IPC: C07C57/075 ,  C07C51/44 ,  C07C57/055 ,  C07C57/07

Abstract: In a process for purifying crude (meth)acrylic acid, the crude (meth)acrylic acid is worked up by distillation after addition of an organic carboxylic acid hydrazide and, if desired, an organic sulfonic acid.

公开(公告)号：DE4335172A1

公开(公告)日：1995-04-20

申请号：DE4335172

申请日：1993-10-15

Applicant: BASF AG

Inventor： DOCKNER TONI DR ,  NESTLER GERHARD DR ,  HERBST HOLGER DR ,  LERMER HELMUT DR ,  MARTAN HANS DR ,  VOGEL HERBERT DR ,  EXNER HERBERT DR

IPC: C07C57/04 ,  C07C51/487 ,  C07C57/055 ,  C07C57/07 ,  C07C57/075 ,  C07C51/64

Abstract: A process for the purification of crude (meth)acrylic acid in which the crude (meth)acrylic acid is worked up by distillation after addition of a primary amine compound and of an organic sulphonic acid.

公开(公告)号：ES2066274T3

公开(公告)日：1995-03-01

申请号：ES91109389

申请日：1991-06-07

Applicant: BASF AG

Inventor： NESTLER GERHARD DR ,  RUCKH PETER DR ,  LAZARUS MANFRED

IPC: C07C67/58 ,  C07C69/54 ,  C07C67/08

Abstract: Method for the production of monoethylenically unsaturated carboxylic esters, in which, after the esterification is complete, a) the product mixture is extracted in a first extraction stage at a temperature of 10 to 40 DEG C with 5 to 30% by volume, based on the product mixture, of water and b) in a second extraction stage at a temperature of 10 to 30 DEG C the aqueous phase from the first extraction stage is extracted with one to four times the amount by weight of alkanol to be esterified.

公开(公告)号：DE59104023D1

公开(公告)日：1995-02-09

申请号：DE59104023

申请日：1991-06-07

Applicant: BASF AG

Inventor： NESTLER GERHARD DR ,  RUCKH PETER DR ,  LAZARUS MANFRED

IPC: C07C67/08 ,  C07C67/58 ,  C07C69/54

Abstract: Method for the production of monoethylenically unsaturated carboxylic esters, in which, after the esterification is complete, a) the product mixture is extracted in a first extraction stage at a temperature of 10 to 40 DEG C with 5 to 30% by volume, based on the product mixture, of water and b) in a second extraction stage at a temperature of 10 to 30 DEG C the aqueous phase from the first extraction stage is extracted with one to four times the amount by weight of alkanol to be esterified.

公开(公告)号：DE4414082A1

公开(公告)日：1994-11-03

申请号：DE4414082

申请日：1994-04-22

Applicant: BASF AG

Inventor： HUEBINGER WOLFGANG DR ,  DUPUIS JACQUES DR ,  HERBST HOLGER DR ,  NESTLER GERHARD DR ,  WICKEL STEFAN DR

IPC: C08F2/00 ,  G01K17/00 ,  G01N25/48 ,  G01N33/44 ,  G01N25/20

Abstract: Isoperibolar calorimeter for measuring the reaction heats of chemical reactions and for determining the time of the reaction start by measuring the temperatures in a reaction vessel and a surrounding thermal bath and recording them on a data-acquisition device, characterised in that a thermometric probe is inserted, centred in a through-bored plug, into the reaction vessel which holds the reaction medium, and this reaction vessel is lowered with the reaction medium and the thermometric probe into the thermal bath, and use of the isoperibolar calorimeter for quality testing, for receptor development and for activity (efficacy) of inhibitors.

公开(公告)号：DE3761208D1

公开(公告)日：1990-01-25

申请号：DE3761208

申请日：1987-03-07

Applicant: BASF AG

Inventor： MERGER FRANZ DR ,  HUTMACHER HANS-MARTIN DR ,  SCHWARZ WOLFGANG DR ,  NESTLER GERHARD DR ,  SZUCSANYI MARIA GYOPAR DR ,  MUELLER-MALL RUDOLF DR

IPC: B01J31/00 ,  B01J31/02 ,  B01J31/20 ,  B01J31/22 ,  C07B61/00 ,  C07D233/04 ,  C07D233/32 ,  C07D239/06 ,  C07D239/10 ,  C07D239/36 ,  C07D243/04 ,  C07D245/02

Abstract: Acrylates or methacrylates I I (A and B=C2-C5-alkylene, R1=H, CH3) are prepared by reacting an acrylate or methacrylate II II (R2=C1-C4-alkyl) with a heterocycle III III in the presence of titanium alcoholates chelate compounds of the metals titanium, zirconium, iron and zinc with 1,3-dicarbonyl compounds.

公开(公告)号：DE3369977D1

公开(公告)日：1987-04-09

申请号：DE3369977

申请日：1983-08-11

Applicant: BASF AG

Inventor： NESTLER GERHARD DR ,  MERGER FRANZ DR

IPC: C07C271/06 ,  C07C125/065

公开(公告)号：DE3364714D1

公开(公告)日：1986-08-28

申请号：DE3364714

申请日：1983-08-11

Applicant: BASF AG

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

IPC: C07D295/13 ,  C07C125/065