Global Patent Index - EP 1235746 A2

EP 1235746 A2 2002-09-04 - PROCESS FOR THE CONTINUOUS TREATMENT OF FLUORINE-CONTAINING FUMED SILICA AND REACTOR FOR THE IMPLEMENTATION OF THIS PROCESS

Title (en)

PROCESS FOR THE CONTINUOUS TREATMENT OF FLUORINE-CONTAINING FUMED SILICA AND REACTOR FOR THE IMPLEMENTATION OF THIS PROCESS

Title (de)

VERFAHREN ZUR BEHANDLUNG VON FLUORHALTIGER KIESELSÄURE UND REAKTOR ZUR IMPLEMENTIERUNG DIESES PROZESSES

Title (fr)

PROCEDE DE TRAITEMENT CONTINU DE SILICE SUBLIMEE CONTENANT DU FLUOR ET REACTEUR POUR LA MISE EN OEUVRE DE CE PROCEDE

Publication

EP 1235746 A2 (EN)

Application

EP 00975067 A

Priority

  • SE 0002003 W
  • SE 9904046 A

Abstract (en)

[origin: WO0119725A2] Process and reactor for defluorinating fluorine-containing fumed silica by means of superheated water vapor in counter-flow at such a velocity that the silica does not fluidize, and at the same time increasing the thickening ability of the silica.

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

C01B 33/18

IPC 8 full level (invention and additional information)

B01J 8/00 (2006.01); B01J 8/08 (2006.01); B01J 8/12 (2006.01); C01B 33/18 (2006.01)

CPC (invention and additional information)

B01J 8/087 (2013.01); B01J 8/003 (2013.01); B01J 8/12 (2013.01); C01B 33/183 (2013.01); B01J 2208/00371 (2013.01); B01J 2219/185 (2013.01); B01J 2219/1943 (2013.01); C01P 2006/12 (2013.01); C01P 2006/22 (2013.01); C01P 2006/80 (2013.01)

Citation (search report)

See references of WO 0119725A3

Designated contracting state (EPC)

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

EPO simple patent family

WO 0119725 A2 20010322; WO 0119725 A3 20010802; AU 1317001 A 20010417; EP 1235746 A2 20020904; SE 9904046 D0 19991109

INPADOC legal status


2004-06-16 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20031204

2003-09-10 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030724

2002-09-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020524

2002-09-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

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

2002-09-04 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI