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filingDate 2003-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3563df09b4a080592f92289bd9731afb
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publicationDate 2003-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber EP-1354905-A2
titleOfInvention Method for producing ether-carboxylic acids having low pour point
abstract A C 2 - bis C 4 -Alkylen, B C 1 - bis C 4 -Alkylen n eine Zahl von 1 bis 100, und R C 1 - bis C 30 -Alkyl, C 2 - bis C 30 -Alkenyl, oder C 6 - bis C 30 -Aryl nbedeuten, nindem man ein basisches Gemisch von oxethylierten Alkoholen der Formeln nund deren Alkoholaten mit einer C 2 - bis C 5 -Chlorcarbonsäure alkyliert und das sonerhaltene basische Zwischenprodukt nach Absäuerung durch Waschen mitnwässriger Sulfatlösung so lange aufreinigt, bis die so erhaltene Ethercarbonsäureneine Leitfähigkeit von < 1000 µS/cm besitzt.The invention relates to a process for the preparation of compounds of the formula (1) wherein A C 2 to C 4 alkylene, B C 1 to C 4 alkylene n a number from 1 to 100, and R C 1 to C 30 alkyl, C 2 to C 30 alkenyl, or C 6 to C 30 aryl mean, by using a basic mixture of ethoxylated alcohols of the formula and their alcoholates are alkylated with a C 2 - to C 5 -chlorocarboxylic acid and the basic intermediate thus obtained is purified after acidification by washing with aqueous sulfate solution until the ether carboxylic acid thus obtained has a conductivity of <1000 μS / cm.
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