(19)

(11)

EP 1 663 913 A1

(12)

(43) Date of publication: 07.06.2006 Bulletin 2006/23 (21) Application number: 04761538.0 (22) Date of filing: 20.09.2004

(51) International Patent Classification (IPC):  C06C 5/04(1968.09) (86) International application number: PCT/BR2004/000178 (87) International publication number: WO 2005/028401 (31.03.2005 Gazette 2005/13)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 19.09.2003 BR 0303546 (71) Applicant: Britanite S/A- Ind Strias Qu Micas 80.950-000 Curitiba (BR)	(72) Inventor: FALQUETE, Marco Antonio Centro, 80.420-190 Curitiba (BR) (74) Representative: Cerbaro, Elena et al STUDIO TORTA S.r.l., Via Viotti, 9 10121 Torino 10121 Torino (IT)