公开(公告)号：MY137827A

公开(公告)日：2009-03-31

申请号：MYPI20054914

申请日：2005-10-19

Applicant: BASF AG

Inventor： SIRCH TILMAN ,  TEBBEN GERD-DIETER DR ,  HECK LUDWIG E ,  DIEFENBACHER ARMIN DR ,  KRAUSE ALFRED DR ,  BORGEL FRANZ

Abstract: 1 7 PREPARATION OF 1,6-HEXANEDIOL ABSTRACT 5 THE PRESENT INVENTION PROVIDES A PROCESS FOR PREPARING 1,6-HEXANEDIOL FROM A CARBOXYLIC ACID MIXTURE WHICH COMPRISES ADIPIC ACID, 6-HVBROXYCAPROIC ACID AND SMALL AMOUNTS OF 11,4-CYCLOHEXANCCLIOLS AND IS OBTAINED AS A BY-PRODUCT IN THE OXIDATION OF CYCLOHEXANE TO CVCLOHEXANONELCYCLOHEXANOL WITH OXYGEN OR OXVGCN-CONTAININO CASES AND BY %,ALEI EXTRACTION OL THE REACTION MIXTURE, BY ESIERILICATION OF ZHE ACIDS AND 10 HYDROGENATION, IN WHICH A) THE MONO- AND DICARBOXYLIC ACIDS PRESENT IN THE AQUEOUS DICARBOXYLIC ACID MIXTURE ARE REACTED WITH A LOW MOLECULAR WEIGHT ALCOHOL TO GIVE THE CORRESPONDING C@RBOXYLIC ESTERS, 1 5 B) THE RESULTING ESTERIFICATION MIXTURE IS FREED OF EXCESS ALCOHOL AND LOW BOILERS IN A FIRST DISTILLATION STAGE, C) A SEPARATION OF THE BOTTOM PRODUCT IS CARRIED OUT IN A SECOND DISTILLATION STAGE INTO 20 AN ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANECLIOLS AND A FRACTION COMPRISING AT LEAST THE MAJORITY OF THE 1,4-CYCLOHEXANEDIOLS, D) THE ESTER FRACTION SUBSTANTIALLY FREE OF 1,4-CYCLOHEXANEDIOLS IS CATAL ICALLY YT HYDROGENATED AND 25 E) 1,6-HEXANEDIAL IS OBTAINED IN A PURIFYING DISTILLATION STAGE FROM THE HYDROGENATION EFFLUENT WHILE REMOVING AN ALCOHOL-LOW BOILER MIXTURE IN A MANNER KNOWN PER SE, WHEREIN ALCOHOL IS REMOVED BY A MEMBRANE SYSTEM FROM THE MIXTURES, OBTAINED AFTER THE ESTERIFICATION IN STAGE B) AND/OR AFTER THE HYDROGENATION IN STAGE E), OF 30 ALCOHOLS AND LOW BOILERS AND RECYCLED INTO THE ESTERIFICATION. Z)OAM4 I Q /I O/O@-

公开(公告)号：MY156461A

公开(公告)日：2016-02-26

申请号：MYPI20060956

申请日：2006-03-07

Applicant: BASF AG

Inventor： CLYMO ANTHONY ,  DIEFENBACHER ARMIN DR ,  FRIESE THORSTEN DR ,  MARTAN HANS DR

IPC: C07C69/52

Abstract: A PROCESS IS DESCRIBED FOR CONTINUOUSLY PREPARING ALKYL ESTERS OF (METH)ACRYLIC ACID BY REACTING (METH)ACRYLIC ACID AND ALKANOLS HAVING FROM 1 TO 5 CARBON ATOMS IN HOMOGENEOUS, LIQUID, SOLVENT-FREE PHASE AT ELEVATED TEMPERATURE AND IN THE PRESENCE OF AN ACIDIC ESTERIFICATION CATALYST, IN WHICH THE (METH)ACRYLIC ACID, THE ALKANOL AND THE ACIDIC ESTERIFICATION CATALYST ARE FED TO A REACTION ZONE (5, 6), THE WATER FORMED DURING A RESIDENCE TIME IS REMOVED RECTIFICATIVELY AS A CONSTITUENT OF AN ALKANOL-COMPRISING MIXTURE IN A RECTIFICATION UNIT III ATTACHED TO THE REACTION ZONE (5, 6), THE DISTILLATE OBTAINED HERE IS SEPARATED INTO AN ALKANOL-COMPRISING ORGANIC PHASE AND A WATER-COMPRISING AQUEOUS PHASE, THE ORGANIC PHASE IS RECYCLED INTO THE RECTIFICATION UNIT III AND THE AQUEOUS PHASE IS DISCHARGED, AND A REACTION MIXTURE (21) IS DISCHARGED FROM THE REACTION ZONE (5, 6), WHICH COMPRISES -FEEDING THE REACTION MIXTURE (21) DISCHARGED FROM THE REACTION ZONE (5, 6) TO A CATALYST REMOVAL UNIT V AND SEPARATING IT IN THE CATALYST REMOVAL UNIT V INTO A TOP STREAM (56) COMPRISING THE ALKYL ESTER OF (METH)ACRYLIC ACID AND DEPLETED IN ACIDIC ESTERIFICATION CATALYST, AND A BOTTOM STREAM (54) COMPRISING THE PREDOMINANT PORTION OF THE ACIDIC ESTERIFICATION CATALYST AND DEPLETED IN WATER, AND -INTRODUCING THE TOP STREAM (56) COMPRISING THE ALKYL ESTER OF (METH)ACRYLIC ACID INTO A RECTIFICATION UNIT I AND, WITH ADDITION OF WATER, SEPARATING IT INTO A TOP STREAM (23) COMPRISING THE ALKYL ESTER OF (METH)ACRYLIC ACID, AND A BOTTOM STREAM (52). (FIGURE 1)

公开(公告)号：MY140509A

公开(公告)日：2009-12-31

申请号：MYPI20041245

申请日：2004-04-05

Applicant: BASF AG

Inventor： MACHHAMMER OTTO DR ,  CRONE SVEN DR ,  BORGMEIER FRIEDER DR ,  MUELLER-ENGEL KLAUS JOACHIM DR ,  ADAMI CHRISTOPH DR ,  DIEFENBACHER ARMIN DR

IPC: C07C57/05 ,  C07C51/215

Abstract: A PROCESS FOR HETEROGENEOUSLY CATALYZED PARTIAL DIRECT OXIDATION OF PROPANE AND/OR ISOBUTANE, IN WHICH TARGET PRODUCT IS REMOVED STAGE, THE REMAINING RESIDUAL PRODUCT GAS MIXTURE IS DIVIDED INTO TWO PORTIONS OF THE SAME COMPOSITION, ONE PORTION IS RECYCLED INTO THE REACTION STAGE AND THE OTHER PORTION IS DISCHARGED, AND BOTH THE REACTION STAGE AND THE WORKUP STAGE ARE OPERATED AT ELEVATED PRESSURE.