(19)

(11)

EP 0 118 548 A1

(12)

(43) Date of publication: 19.09.1984 Bulletin 1984/38 (21) Application number: 83903058.0 (22) Date of filing: 09.09.1983

(51) International Patent Classification (IPC):  B01D 15/ 00( . ) B01J 20/ 32( . ) C02F 1/ 28( . ) B01J 20/ 04( . ) C01B 25/ 34( . ) (86) International application number: PCT/US1983/001365 (87) International publication number: WO 1984/000885 (15.03.1984 Gazette 1984/07)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 09.09.1982 US 19820416771 25.08.1983 US 19830526311 (71) Applicant: ORGANON TEKNIKA CORPORATION Oklahoma City OK 73144 (US)	(72) Inventors: HOF, Craig, R. Hopatcong, NJ 07834 (US) POLAK, Robert, B. Asheville, NC 28804 (US) THOMPSON, Ralph, Preston Oklahoma City, OK 73132 (US)