(19)
(11) EP 0 935 592 A1

(12)

(43) Date of publication:
18.08.1999 Bulletin 1999/33

(21) Application number: 97913902.0

(22) Date of filing: 30.10.1997
(51) International Patent Classification (IPC): 
B01J 23/ 26( . )
C07C 17/ 20( . )
C07B 61/ 00( . )
C07C 19/ 08( . )
(86) International application number:
PCT/US1997/019737
(87) International publication number:
WO 1998/019981 (14.05.1998 Gazette 1998/19)
(84) Designated Contracting States:
DE FR GB IT NL

(30) Priority: 01.11.1996 US 19960030150P
21.02.1997 US 19970038659P
29.10.1997 US 19970959898

(71) Applicant: E.I. DU PONT DE NEMOURS & COMPANY INCORPORATED
Wilmington Delaware 19898 (US)

(72) Inventor:
  • MAHLER, Barry, Asher
    Glen Mills, PA 19342 (US)

(74) Representative: Matthews, Derek Peter, et al 
Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street
London EC4V 4EL
London EC4V 4EL (GB)

   


(54) MANUFACTURE OF HEXAFLUOROETHANE