(19)

(11)

EP 0 783 368 A1

(12)

(43) Date of publication: 16.07.1997 Bulletin 1997/29 (21) Application number: 95929629.0 (22) Date of filing: 21.08.1995

(51) International Patent Classification (IPC):  B01J 23/ 10( . ) B01J 37/ 00( . ) C10G 11/ 04( . ) C10G 11/ 08( . ) B01J 29/ 06( . ) C10G 11/ 02( . ) C10G 11/ 05( . ) (86) International application number: PCT/US1995/010613 (87) International publication number: WO 1996/009889 (04.04.1996 Gazette 1996/15)

(84) Designated Contracting States: DE ES FR GB IT NL (30) Priority: 29.09.1994 US 19940315320 07.06.1995 US 19950486416 (71) Applicant: W.R. Grace & Co.-Conn. New York New York 10036 (US)	(72) Inventor: KUMAR, Ranjit Columbia, MD 21046 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 22607 Hamburg 22607 Hamburg (DE)