(19)

(11)

EP 0 672 086 A1

(12)

(43) Date of publication: 20.09.1995 Bulletin 1995/38 (21) Application number: 94916821.0 (22) Date of filing: 19.11.1993

(51) International Patent Classification (IPC):  C08K 5/ 09( . ) C08K 5/ 1539( . ) C08K 5/ 1515( . ) C08L 77/ 00( . ) (86) International application number: PCT/EP1993/003258 (87) International publication number: WO 1994/012575 (09.06.1994 Gazette 1994/13)

(84) Designated Contracting States: BE DE ES FR GB IT NL SE (30) Priority: 20.11.1992 GB 19920024512 (71) Applicant: EXXON CHEMICAL COMPANY Linden, NJ 07036 (US)	(72) Inventors: DEKONINCK, Jean-Marc Houston, TX 77059 (US) MARECHAL, Philippe Tokyo Institute of Technology Ota-ku Tokyo 145 (JP) LEGRAS, Roger, Marcel, Henri B-4280 Lens Saint Remy (BE) (74) Representative: Veldhuizen, Albert Dirk Willem, et al  Exxon Chemical Limited Exxon Chemical Technology Centre PO Box 1 Abingdon Oxfordshire OX13 6BB Abingdon Oxfordshire OX13 6BB (GB)