(19)

(11)

EP 0 153 406 A1

(12)

(43) Date of publication: 04.09.1985 Bulletin 1985/36 (21) Application number: 84903329.0 (22) Date of filing: 23.08.1984

(51) International Patent Classification (IPC):  B01D 53/ 26( . ) C07C 7/ 00( . ) (86) International application number: PCT/US1984/001372 (87) International publication number: WO 1985/001058 (14.03.1985 Gazette 1985/07)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 25.08.1983 US 19830526422 (71) Applicant: PALL CORPORATION Glen Cove New York 11542 (US)	(72) Inventors: BUTLER, Robert, C. Ocala, FL 32671 (US) THELEN, John, Edward Ocala, FL 32671 (US)