Global patent index - EP 1001911 A1

EP 1001911 A1 2000-05-24 - METHOD OF TREATING SOLVENT-CONTAINING PROCESS LIQUIDS

Title (en)

METHOD OF TREATING SOLVENT-CONTAINING PROCESS LIQUIDS

Title (de)

VERFAHREN ZUR AUFBEREITUNG VON LÖSEMITTEHALTIGEN PROZESSFLÜSSIGKEITEN

Title (fr)

PROCEDE DE TRAITEMENT DE LIQUIDES DE TRAITEMENT CONTENANT DES SOLVANTS

Publication

EP 1001911 A1 (EN)

Application

EP 98936427 A

Priority

  • EP 98936427 A
  • EP 9804422 W
  • EP 97112200 A

Abstract (en)

[origin: EP0891950A1] The present invention relates to a method of obtaining a solvent-containing concentrate from used rinsing liquids from the paint processing industry which comprise solids fractions, organic solvents and water by: a) separating the rinsing liquid (1) by ultrafiltration (2) into a retentate (3) and a permeate (5), b) separating the ultrafiltration permeate (5) by reverse osmosis (6) into a solvent-containing concentrate (7) and into a permeate (9) which is substantially free of organic solvents, and c) separately removing (4, 8, 10) the ultrafiltration retentate (3), the solvent-containing concentrate (7) from the reverse osmosis (6), and the reverse osmosis permeate (9).

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

C02F 1/44; B01D 61/58

IPC 8 full level (invention and additional information)

B01D 61/04 (2006.01); B01D 61/58 (2006.01); C02F 1/44 (2006.01)

CPC (invention and additional information)

C02F 1/441 (2013.01); B01D 61/04 (2013.01); B01D 61/58 (2013.01); C02F 1/444 (2013.01); B01D 61/025 (2013.01); B01D 61/145 (2013.01); C02F 1/448 (2013.01); C02F 2103/14 (2013.01)

Citation (search report)

See references of WO 9903786A1

Designated contracting state (EPC)

AT BE DE ES FI FR GB IT NL PT SE

EPO simple patent family

EP 0891950 A1 19990120; AU 8542598 A 19990210; EP 1001911 A1 20000524; WO 9903786 A1 19990128

INPADOC legal status

2002-03-27 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20020128

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

- Ref Legal Event Code: 17P

- Effective date: 20000122

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

- Ref Legal Event Code: AK

- Designated State(s): AT BE DE ES FI FR GB IT NL PT SE