(19)

(11)

EP 0 868 293 A1

(12)

(43) Date of publication: 07.10.1998 Bulletin 1998/41 (21) Application number: 96944024.0 (22) Date of filing: 10.12.1996

(51) International Patent Classification (IPC):  C08J 3/ 28( . ) C08G 67/ 02( . ) B29C 71/ 04( . ) B29C 35/ 08( . ) (86) International application number: PCT/EP1996/005730 (87) International publication number: WO 1997/021537 (19.06.1997 Gazette 1997/26)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 11.12.1995 US 19950570020 11.12.1995 US 19950570019 (71) Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. 2596 HR Den Haag (NL)	(72) Inventors: ASH, Carl, Edwin Sugar Land, TX 77479 (US) MYSORE, Narayana Houston, TX 77095 (US)