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(11)

EP 1 268 840 A2

(12)

(88) Date of publication A3: 14.03.2002 (43) Date of publication: 02.01.2003 Bulletin 2003/01 (21) Application number: 01926557.8 (22) Date of filing: 02.04.2001

(51) International Patent Classification (IPC)7: C12P 19/04, C12R 1/01, C02F 1/52, C02F 1/62, C22B 60/02 // C12P19:04, C12R1:01 (86) International application number: PCT/US0110/657 (87) International publication number: WO 0107/5138 (11.10.2001 Gazette 2001/41)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 31.03.2000 US 193750 P (71) Applicant: EASTMAN CHEMICAL COMPANY Kingsport, TN 37660 (US)	(72) Inventors: ALLEN, MichaelThe University of Tennessee Knoxville, TN 37996-1605 (US) SAYLER, Gary, S. Blain, TN 37709 (US) MEYERS, Athur, J. Kingsport, TN 37663 (US) (74) Representative: Wibbelmann, Jobst, Dr., Dipl.-Chem. et al Wuesthoff & Wuesthoff,Patent- und Rechtsanwälte,Schweigerstrasse 2 81541 München 81541 München (DE)