EP 2054370 A1 20090506 - INTEGRATED PROCESS AND APPARATUS FOR PREPARING ESTERS OF METHACRYLIC ACID FROM ACETONE AND HYDROCYANIC ACID
Title (en)
INTEGRATED PROCESS AND APPARATUS FOR PREPARING ESTERS OF METHACRYLIC ACID FROM ACETONE AND HYDROCYANIC ACID
Title (de)
INTEGRIERTES VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON METHACRYLSÄUREESTERN AUS ACETON UND BLAUSÄURE
Title (fr)
PROCEDE INTEGRE ET DISPOSITIF POUR LA FABRICATION D'ESTERS D'ACIDE METHACRYLIQUE A PARTIR D'ACETONE ET D'ACIDE CYANHYDRIQUE
Publication
Application
Priority
- EP 2007059110 W 20070831
- DE 102006058250 A 20061208
Abstract (en)
[origin: WO2008068064A1] The subject-matter of the present invention relates in principle to a process for preparing alkyl esters of methacrylic acid, comprising at least the following steps: preparing acetone cyanohydrin from hydrocyanic acid and acetone in a first step, purifying the acetone cyanohydrin in a second step, preparing methacrylamide from acetone cyanohydrin in a third step, esterifying a reaction mixture comprising methacrylamide and at least one alkyl alcohol in the presence of a mixture of water and sulphuric acid to give alkyl methacrylates in a fourth step, and purifying the alkyl methacrylate in at least one further step, and also to an apparatus for performing this process.
IPC 8 full level
C07C 67/20 (2006.01); C07C 69/54 (2006.01); C07C 231/06 (2006.01); C07C 231/14 (2006.01); C07C 233/09 (2006.01); C07C 253/00 (2006.01); C07C 255/16 (2006.01)
CPC (source: EP KR US)
C07B 61/00 (2013.01 - KR); C07C 67/20 (2013.01 - EP KR US); C07C 69/54 (2013.01 - KR); C07C 231/14 (2013.01 - EP US); C07C 253/00 (2013.01 - EP US); C09D 4/00 (2013.01 - KR); Y02P 20/10 (2015.11 - EP US)
Citation (search report)
See references of WO 2008068064A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DE 102006058250 A1 20080612; AU 2007327788 A1 20080612; BR PI0719692 A2 20131224; CN 101195574 A 20080611; EP 2054370 A1 20090506; JP 2010511651 A 20100415; KR 20090096450 A 20090910; MX 2009005895 A 20090724; RU 2009125683 A 20110120; TW 200835680 A 20080901; US 2010069662 A1 20100318; WO 2008068064 A1 20080612
DOCDB simple family (application)
DE 102006058250 A 20061208; AU 2007327788 A 20070831; BR PI0719692 A 20070831; CN 200710084388 A 20070228; EP 07803110 A 20070831; EP 2007059110 W 20070831; JP 2009539672 A 20070831; KR 20097011717 A 20070831; MX 2009005895 A 20070831; RU 2009125683 A 20070831; TW 96146117 A 20071204; US 51736607 A 20070831