EP 1713752 A1 20061025 - PRODUCTION OF BISPHENOL A WITH A REDUCED ISOMER FORMATION
Title (en)
PRODUCTION OF BISPHENOL A WITH A REDUCED ISOMER FORMATION
Title (de)
HERSTELLUNG VON BISPHENOL A MIT VERRINGERTER ISOMERENBILDUNG
Title (fr)
PRODUCTION DE BISPHENOL A AVEC UNE FORMATION REDUITE D'ISOMERES
Publication
Application
Priority
- EP 2005000615 W 20050122
- DE 102004005724 A 20040205
Abstract (en)
[origin: US2005176918A1] A process for the production of bisphenol A is disclosed. The process entails a) mixing phenol and acetone to form a mixture, and b) bringing the mixture to a temperature of 48 to 54° C. to form a warm mixture, and c) commencing a reaction between phenol and acetone upon contacting the warm mixture with an acid ion exchange catalyst to form a product mixture that contains bisphenol A. The bisphenol A may be extracted from the product mixture by crystallization and filtration.
IPC 8 full level
C07C 37/20 (2006.01); C07C 39/16 (2006.01); C08G 64/24 (2006.01); C08G 64/28 (2006.01); C08G 64/30 (2006.01)
CPC (source: EP KR US)
C07C 37/20 (2013.01 - EP KR US); C08G 64/28 (2013.01 - EP US); C08G 64/307 (2013.01 - EP US)
C-Set (source: EP US)
Citation (search report)
See references of WO 2005075396A1
Designated contracting state (EPC)
BE DE ES NL PL
DOCDB simple family (publication)
US 2005176918 A1 20050811; CN 100516011 C 20090722; CN 1918097 A 20070221; DE 102004005724 A1 20050825; EP 1713752 A1 20061025; JP 2007520502 A 20070726; JP 4874125 B2 20120215; KR 20060130169 A 20061218; RU 2006131515 A 20080310; RU 2402521 C2 20101027; SG 152282 A1 20090529; TW 200536876 A 20051116; WO 2005075396 A1 20050818
DOCDB simple family (application)
US 4376905 A 20050126; CN 200580003589 A 20050122; DE 102004005724 A 20040205; EP 05706966 A 20050122; EP 2005000615 W 20050122; JP 2006551754 A 20050122; KR 20067015809 A 20060804; RU 2006131515 A 20050122; SG 2009029158 A 20050122; TW 94103488 A 20050204