EP 1523466 A1 20050420 - DECOMPOSITION OF CUMENE OXIDATION PRODUCT
Title (en)
DECOMPOSITION OF CUMENE OXIDATION PRODUCT
Title (de)
ZERSETZUNG VON CUMOLOXIDATIONSPRODUKTEN
Title (fr)
DECOMPOSITION DU PRODUIT D'OXYDATION DU CUMENE
Publication
Application
Priority
US 0222968 W 20020719
Abstract (en)
[origin: WO2004009522A1] A process for decomposing a cumene oxidation product mixture containing cumene hydroperoxide (CHP) and dimethylphenyl carbinol (DMPC) to produce phenol, acetone and alpha-methyl styrene (AMS) with enhanced safety of operation and reduced by-product formation which comprises the steps: mixing the cumene oxidation product in a stirred or back-mixed reactor with an acid catalyst, with 10 to 100 percent acetone relative to the amount of acetone produced during the decomposition reaction, and with up to 4 weight percent additional amounts of water relative to the reaction mixture, at an average temperature between about 50°C and about 90°C for a time sufficient to lower the average CHP concentration of the reactor to between about 0.2 and about 3.0 weight percent, and wherein a portion of DMPC is converted to dicumyl peroxide (DCP); then reacting the reaction mixture from step (a) at a temperature between about 120°C and 150°C under plug-flow conditions for a time sufficient to decompose substantially all residual CHP and at least 90 percent of the DCP formed in step (a).
IPC 1-7
IPC 8 full level
C07C 27/00 (2006.01); C07C 1/24 (2006.01); C07C 5/327 (2006.01); C07C 15/46 (2006.01); C07C 37/08 (2006.01); C07C 39/04 (2006.01); C07C 39/07 (2006.01); C07C 45/53 (2006.01); C07C 49/08 (2006.01)
CPC (source: EP)
C07C 1/24 (2013.01); C07C 37/08 (2013.01); C07C 45/53 (2013.01)
Citation (search report)
See references of WO 2004009522A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 2004009522 A1 20040129; AU 2002326413 A1 20040209; CN 1639097 A 20050713; EP 1523466 A1 20050420; JP 2005533848 A 20051110
DOCDB simple family (application)
US 0222968 W 20020719; AU 2002326413 A 20020719; CN 02829332 A 20020719; EP 02761128 A 20020719; JP 2004522911 A 20020719