(19)

(11)

EP 0 764 186 A1

(12)

(43) Date of publication: 26.03.1997 Bulletin 1997/13 (21) Application number: 95921837.0 (22) Date of filing: 02.06.1995

(51) International Patent Classification (IPC):  C08J 3/ 12( . ) C08J 9/ 228( . ) C08J 9/ 224( . ) (86) International application number: PCT/EP1995/002171 (87) International publication number: WO 1995/033790 (14.12.1995 Gazette 1996/01)

(84) Designated Contracting States: DE GB NL (30) Priority: 07.06.1994 EP 19940201628 (71) Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 2596 HR Den Haag (NL)	(72) Inventors: PALEJA, Rakesh, Jaysinh B-1348 ottignies Louvain-La-Neuve (BE) VLIERS, Dominique, Paul B-1348 Ottignies Louvain-La-Neuve (BE) WILLEMS, Maria, Johanna B-1348 Ottignies Louvain-La-Neuve (BE)