(19)
(11) EP 1 551 796 A1

(12)

(43) Date of publication:
13.07.2005 Bulletin 2005/28

(21) Application number: 03754994.6

(22) Date of filing: 30.09.2003
(51) International Patent Classification (IPC)7C07C 243/28
(86) International application number:
PCT/US2003/030869
(87) International publication number:
WO 2004/031131 (15.04.2004 Gazette 2004/16)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 03.10.2002 US 415672 P

(71) Applicant: SK Energy and Chemical, Inc.
Fair Lawn, NJ 07410 (US)

(72) Inventors:
  • KWON, Taesoo
    Montville, NJ (US)
  • GU, Chen
    Lake Hiawatha, NJ (US)
  • YANG, Soon-Ha
    Gyeonggi-do 411-828 (KR)

(74) Representative: Stevens, Ian Edward et al
Eric Potter Clarkson,Park View House,58 The Ropewalk
Nottingham NG1 5DD
Nottingham NG1 5DD (GB)

   


(54) IMPROVED SYNTHETON SYNTHESIS