(19)
(11) EP 1 154 977 A1

(12)

(43) Date of publication:
21.11.2001 Bulletin 2001/47

(21) Application number: 00911905.8

(22) Date of filing: 14.02.2000
(51) International Patent Classification (IPC)7C07C 51/31, C07C 51/48, C07C 55/14
(86) International application number:
PCT/US0004/473
(87) International publication number:
WO 0048/981 (24.08.2000 Gazette 2000/34)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.02.1999 US 121070 P
03.03.1999 US 122705 P

(71) Applicant: RPC Inc.
Atlanta, GA 30324 (US)

(72) Inventors:
  • DUDGEON, Douglas, J.
    Bainbridge Island, WA 98110 (US)
  • DECOSTER, David, C.
    Barrington, RI 02806 (US)
  • DASSEL, Mark, W.
    Indianola, WA 98342 (US)
  • VASSILIOU, Eustathios
    Newark, DE 19711-7419 (US)
  • ROSTAMI, Ader, M.
    Bainbridge Island, WA 98110 (US)

(74) Representative: Gowshall, Jonathan Vallance et al
FORRESTER & BOEHMERTPettenkoferstrasse 20-22
80336 München
80336 München (DE)

   


(54) METHODS OF EXTRACTING CATALYST IN SOLUTION IN THE MANUFACTURE OF ADIPIC ACID