Global Patent Index - EP 1237861 A1

EP 1237861 A1 2002-09-11 - METHOD FOR PRODUCING PEROXYCARBOXYLIC ACID SOLUTIONS, ESPECIALLY EQUILIBRIUM PERACETIC ACID AND PERPROPIONIC ACID

Title (en)

METHOD FOR PRODUCING PEROXYCARBOXYLIC ACID SOLUTIONS, ESPECIALLY EQUILIBRIUM PERACETIC ACID AND PERPROPIONIC ACID

Title (de)

VERFAHREN ZUR HERSTELLUNG VON PEROXYCARBONSÄURELÖSUNGEN INSBESONDERE GLEICHGEWICHTS-PERESSIGSÄURE UND -PERPROPIONSÄURE

Title (fr)

PROCEDE DE PREPARATION DE SOLUTIONS D'ACIDE PEROXYCARBOXYLIQUE, EN PARTICULIER D'ACIDE PERACETIQUE ET D'ACIDE PERPRIONIQUE EN ETAT D'EQUILIBRE

Publication

EP 1237861 A1 (DE)

Application

EP 00987305 A

Priority

  • DE 19960994 A
  • EP 0011830 W

Abstract (en)

[origin: WO0144176A1] The invention relates to a method for producing a peroxyacetic acid or peroxypropionic acid solution by reacting acetic acid or propionic acid with hydrogen peroxide in the presence of a polyphosphoric acid catalyst. The catalyst used in the inventive method is a water-free solution that is obtained by dissolving 0.1 to 99 % by weight, especially 1 to 35 % by weight (based on the solution) of a polyphosphoric acid in the carboxylic acid that is to be converted to the peroxycarboxylic acid. The catalyst solution is preferably produced using molten polyphosphoric acid on the site of production of the same.

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

C07C 409/00; C07C 409/24; C07C 409/26

IPC 8 full level (invention and additional information)

B01J 27/16 (2006.01); B01J 31/04 (2006.01); C07C 409/24 (2006.01); C07C 409/26 (2006.01)

CPC (invention and additional information)

B01J 27/16 (2013.01); B01J 31/04 (2013.01); C07C 407/00 (2013.01)

Combination set (CPC)

  1. C07C 407/00 + C07C 409/24
  2. C07C 407/00 + C07C 409/26

Citation (search report)

See references of WO 0144176A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

WO 0144176 A1 20010621; AU 2359801 A 20010625; BR 0012905 A 20020521; CA 2377243 A1 20010621; DE 19960994 A1 20010621; EP 1237861 A1 20020911; IL 147003 D0 20020814; PL 354398 A1 20040112; ZA 200110146 B 20030310

INPADOC legal status


2003-12-17 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030603

2002-11-13 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20011204

2002-09-11 [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

2002-09-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: SI