Global Patent Index - EP 1001954 A1

EP 1001954 A1 2000-05-24 - METHOD FOR TRIOXAN ISOLATION

Title (en)

METHOD FOR TRIOXAN ISOLATION

Title (de)

VERFAHREN ZUR ABTRENNUNG VON TRIOXAN

Title (fr)

PROCEDE DE SEPARATION DE TRIOXANNE

Publication

EP 1001954 A1 (DE)

Application

EP 98939607 A

Priority

  • DE 19732291 A
  • EP 9804094 W

Abstract (en)

[origin: DE19732291A1] The invention relates to a method for trioxan isolation from an aqueous mixture basically consisting of trioxan, water and formaldehyde. The method is characterized in that trioxan is withdrawn from the mixture by pervaporation and in that the trioxan enriched mixture (permeate) is separated by trioxan rectification and an azeotropic mixture of trioxan, water and formaldehyde.

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

C07D 323/06

IPC 8 full level (invention and additional information)

B01D 61/36 (2006.01); C07D 323/06 (2006.01)

CPC (invention and additional information)

B01D 61/362 (2013.01); C07D 323/06 (2013.01); Y10S 159/27 (2013.01); Y10S 159/28 (2013.01)

Citation (search report)

See references of WO 9905137A1

Designated contracting state (EPC)

BE DE FR GB IT NL

EPO simple patent family

DE 19732291 A1 19990128; CN 1264374 A 20000823; EP 1001954 A1 20000524; JP 2001510839 A 20010807; PL 338381 A1 20001023; US 6200429 B1 20010313; WO 9905137 A1 19990204

INPADOC legal status


2002-09-04 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020201

2000-05-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991221

2000-05-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE FR GB IT NL