(19)

(11)

EP 0 856 028 A1

(12)

(43) Date of publication: 05.08.1998 Bulletin 1998/32 (21) Application number: 96934725.0 (22) Date of filing: 15.10.1996

(51) International Patent Classification (IPC):  C08K 3/ 10( . ) C08K 3/ 00( . ) C08L 73/ 00( . ) C08G 67/ 02( . ) C08K 7/ 14( . ) C08L 83/ 04( . ) (86) International application number: PCT/EP1996/004513 (87) International publication number: WO 1997/014743 (24.04.1997 Gazette 1997/18)

(84) Designated Contracting States: BE DE ES FI FR GB IT NL PT (30) Priority: 16.10.1995 US 19950543664 09.07.1996 EP 19960201926 (71) Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 2596 HR Den Haag (NL)	(72) Inventors: GINGRICH, Randall, Power Houston, TX 77009 (US) KORMELINK, Hendrik, Geert-Jan B-1348 Ottignies Louvain-la-Neuve (BE) LONDA, Michelle Sugar Land, TX 77479 (US)