(19)
(11)
EP 1 463 720 A1
(12)
(43)
Date of publication:
06.10.2004
Bulletin 2004/41
(21)
Application number:
02800980.1
(22)
Date of filing:
09.10.2002
(51)
International Patent Classification (IPC)
7
:
C07D
307/62
(86)
International application number:
PCT/US2002/032259
(87)
International publication number:
WO 2003/031427
(
17.04.2003
Gazette 2003/16)
(84)
Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI
(30)
Priority:
09.10.2001
US 327884 P
(71)
Applicant:
EASTMAN CHEMICAL COMPANY
Kingsport, TN 37660 (US)
(72)
Inventor:
ZOELLER, Joseph, R.
Kingsport, TN 37660-2367 (US)
(74)
Representative:
Jones Day
Rechtsanwälte, Attorneys-at-Law, PatentanwältePrinzregentenstrasse 11
80538 München
80538 München (DE)
(54)
SYSTEMS AND METHODS FOR GENERATION OF ASCORBIC ACID WITH REDUCED COLOR