(19)

(11)

EP 0 554 379 A1

(12)

(43) Date of publication: 11.08.1993 Bulletin 1993/32 (21) Application number: 91920509.0 (22) Date of filing: 22.10.1991

(51) International Patent Classification (IPC):  B09B 3/ 00( . ) C08J 11/ 08( . ) (86) International application number: PCT/US1991/007820 (87) International publication number: WO 1992/007025 (30.04.1992 Gazette 1992/10)

(84) Designated Contracting States: BE DE FR GB IT NL (30) Priority: 22.10.1990 US 19900600796 (71) Applicant: MOBIL OIL CORPORATION Fairfax, Virginia 22037-0001 (US)	(72) Inventor: KRUTCHEN, Charles, Marion Pittsford, NY 14534 (US) (74) Representative: Colmer, Stephen Gary, et al  European Office of Patent Counsel Mobil House 500-600 Witan Gate Central Milton Keynes Buckinghamshire MK9 1ES Central Milton Keynes Buckinghamshire MK9 1ES (GB)