Global Patent Index - EP 0980356 A1

EP 0980356 A1 2000-02-23 - PROCESS FOR RECOVERING CAPROLACTAM FROM A NEUTRALIZED REARRANGEMENT MIXTURE

Title (en)

PROCESS FOR RECOVERING CAPROLACTAM FROM A NEUTRALIZED REARRANGEMENT MIXTURE

Title (de)

VERFAHREN ZUR GEWINNUNG VOM CAPROLACTAM AUS EINER NEUTRALISIERTEN UMLAGERUNGSMISCHUNG

Title (fr)

PROCEDE POUR EXTRAIRE LE CAPROLACTAME D'UN MELANGE DE REARRANGEMENT NEUTRALISE

Publication

EP 0980356 A1 (EN)

Application

EP 98914149 A

Priority

  • NL 9800216 W
  • NL 1005927 A

Abstract (en)

[origin: WO9849140A1] The invention relates to a process for recovering caprolactam from a neutralized rearrangement mixture, which rearrangement mixture comprises a solution of caprolactam in water and a solution of ammonium sulphate in water, by extraction with an organic solvent in a mixer, after which the resulting organic phase is separated from the aqueous phase in a separator and caprolactam is recovered from the organic phase, the organic solvent being dispersed in the neutralized rearrangement mixture in the mixer.

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

C07D 201/16

IPC 8 full level (invention and additional information)

C07D 201/16 (2006.01)

CPC (invention and additional information)

C07D 201/16 (2013.01)

Citation (search report)

See references of WO 9849140A1

Designated contracting state (EPC)

BE DE ES IT NL

EPO simple patent family

WO 9849140 A1 19981105; AU 6856598 A 19981124; BG 103833 A 20000630; BR 9809420 A 20000613; CA 2288156 A1 19981105; CN 1253546 A 20000517; CO 5040159 A1 20010529; EA 199900982 A1 20000626; EP 0980356 A1 20000223; ID 23781 A 20000511; JP 2001522371 A 20011113; KR 20010020300 A 20010315; NL 1005927 C2 19981102; PL 336476 A1 20000619; SK 148799 A3 20000516; TW 408109 B 20001011

INPADOC legal status


2001-10-17 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010410

2000-11-08 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000927

2000-02-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991005

2000-02-23 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE ES IT NL

2000-02-23 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: RO PAYMENT 19991005