Global Patent Index - EP 1240128 A1

EP 1240128 A1 2002-09-18 - PROCESS FOR ENHANCED ACETONE REMOVAL FROM CARBONYLATION PROCESSES

Title (en)

PROCESS FOR ENHANCED ACETONE REMOVAL FROM CARBONYLATION PROCESSES

Title (de)

VERFAHREN ZUR VERBESSERTEN ENTFERNUNG VON ACETON AUS EINEM CARBONYLIERUNGSPROZESS

Title (fr)

PROCEDE D'ELIMINATION AMELIOREE D'ACETONE ISSUE DE PROCESSUS DE CARBONYLATION

Publication

EP 1240128 A1 (EN)

Application

EP 00977156 A

Priority

  • US 0030989 W
  • US 46991199 A

Abstract (en)

[origin: WO0146109A1] A process for removing acetone from a methyl acetate, methyl iodide and acetone mixture includes the step of removing a side stream from the distillation zone rich in acetone. In a preferred embodiment the methyl acetate, methyl iodide and acetone mixture is contacted with water before or concurrently with fractional distillation. The process is particularly applicable to removing acetone by-product in a carbonylation process for the production of acetic anhydride.

IPC 1-7 (main, further and additional classification)

C07C 45/83; C07C 17/386; C07C 45/80; C07C 45/82; C07C 49/08; C07C 51/44; C07C 67/54

IPC 8 full level (invention and additional information)

C07C 17/386 (2006.01); C07C 17/38 (2006.01); C07C 45/80 (2006.01); C07C 45/82 (2006.01); C07C 45/83 (2006.01); C07C 51/12 (2006.01); C07C 51/44 (2006.01); C07C 51/54 (2006.01)

CPC (invention and additional information)

C07C 51/12 (2013.01); C07C 17/38 (2013.01); C07C 45/80 (2013.01); C07C 45/82 (2013.01); C07C 45/83 (2013.01); C07C 51/44 (2013.01)

Combination set (CPC)

  1. C07C 45/80 + C07C 49/08
  2. C07C 45/82 + C07C 49/08
  3. C07C 45/83 + C07C 49/08
  4. C07C 51/12 + C07C 53/12
  5. C07C 51/44 + C07C 53/12

Citation (search report)

See references of WO 0146109A1

Designated contracting state (EPC)

AT BE CH DE FR GB LI

EPO simple patent family

WO 0146109 A1 20010628; BR 0016571 A 20021001; CN 1411432 A 20030416; EP 1240128 A1 20020918; JP 2003518053 A 20030603

INPADOC legal status


2004-05-26 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT BE CH DE FR GB LI

2004-02-11 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030805

2003-05-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030325

2002-09-18 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020511

2002-09-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR