(19)

(11)

EP 1 732 981 A1

(12)

(43) Date of publication: 20.12.2006 Bulletin 2006/51 (21) Application number: 05717165.4 (22) Date of filing: 01.04.2005

(51) International Patent Classification (IPC):  C08L 23/04(2006.01) (86) International application number: PCT/EP2005/051489 (87) International publication number: WO 2005/097888 (20.10.2005 Gazette 2005/42)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 07.04.2004 EP 04101431 (71) Applicant: TOTAL PETROCHEMICALS RESEARCH FELUY 7181 Seneffe (Feluy) (BE)	(72) Inventor: MICHEL, Jacques B-7181 Feluy (BE) (74) Representative: Leyder, Francis et al Total Petrochemicals Research Feluy Zone Industrielle C 7181 Seneffe (Feluy) 7181 Seneffe (Feluy) (BE)