(19)

(11)

EP 1 792 116 A1

(12)

(43) Date of publication: 06.06.2007 Bulletin 2007/23 (21) Application number: 05776199.1 (22) Date of filing: 19.07.2005

(51) International Patent Classification (IPC):  F17C 5/00(2006.01) F17C 6/00(2006.01) F17C 9/02(2006.01) F17C 5/02(2006.01) F17C 7/04(2006.01) (86) International application number: PCT/EP2005/053488 (87) International publication number: WO 2006/008299 (26.01.2006 Gazette 2006/04)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 23.07.2004 EP 04103528 (71) Applicant: SOLVAY (SOCIETE ANONYME) 1050 Bruxelles (BE)	(72) Inventors: SCHWIEGEL, Martin 30167 Hannover (DE) DISTEL, Reiner 74831 Gundelsheim (DE) (74) Representative: Mross, Stefan P.M. et al Solvay (Société Anonyme), IPD Rue de Ransbeek, 310 1120 Brussels 1120 Brussels (BE)