PL433365A1 - Method for the preparation of ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid EDDHA and chelates based on it - Google Patents

Method for the preparation of ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid EDDHA and chelates based on it

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Publication number
PL433365A1
PL433365A1 PL433365A PL43336520A PL433365A1 PL 433365 A1 PL433365 A1 PL 433365A1 PL 433365 A PL433365 A PL 433365A PL 43336520 A PL43336520 A PL 43336520A PL 433365 A1 PL433365 A1 PL 433365A1
Authority
PL
Poland
Prior art keywords
ethylenediamine
eddha
bis
preparation
hydroxyphenylacetic acid
Prior art date
Application number
PL433365A
Other languages
Polish (pl)
Other versions
PL240991B1 (en
Inventor
Józef Hoffmann
Ewelina Klem-Marciniak
Tomasz Olszewski
Krystyna Hoffmann
Marta Huculak-Mączka
Dominik Niewieś
Jakub Zieliński
Maciej Kaniewski
Magdalena Braun-Giwerska
Magdalena Klakocar-Ciepacz
Original Assignee
Politechnika Wrocławska
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politechnika Wrocławska filed Critical Politechnika Wrocławska
Priority to PL433365A priority Critical patent/PL240991B1/en
Publication of PL433365A1 publication Critical patent/PL433365A1/en
Publication of PL240991B1 publication Critical patent/PL240991B1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Przedmiotem wynalazku jest sposób wytwarzania kwasu etylenodiamino-N,N'-bis(2-hydroksyfenylooctowego EDDHA charakteryzujący się tym, że fenol, etylenodiaminę, wodorotlenek sodu oraz wodny roztwór kwasu glioksalowego miesza się w stosunku molowym odpowiednio od 10 do 50, od 0,75 do 1,25 od 1,25 do 2,75, od 1,25 do 2,75, przy czym że reakcję prowadzi się w środowisku zasadowym, w temperaturze 80 - 100°C w czasie od 0,5 do 5 godzin, następnie mieszaninę reakcyjną chłodzi się do temperatury pokojowej, a nadmiar fenolu usuwa się poprzez ekstrakcję i ponownie wykorzystuje w procesie.The subject of the invention is a process for the production of ethylenediamine-N, N'-bis (2-hydroxyphenylacetic acid EDDHA) characterized in that phenol, ethylenediamine, sodium hydroxide and an aqueous solution of glyoxylic acid are mixed in a molar ratio of 10 to 50 and 0.75 respectively. to 1.25 from 1.25 to 2.75, from 1.25 to 2.75, wherein the reaction is carried out in a basic medium at a temperature of 80 - 100 ° C for 0.5 to 5 hours, then the reaction mixture is cooled to room temperature and excess phenol is removed by extraction and reused in the process.

PL433365A 2020-03-27 2020-03-27 Method for the preparation of ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid EDDHA and chelates based on it PL240991B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL433365A PL240991B1 (en) 2020-03-27 2020-03-27 Method for the preparation of ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid EDDHA and chelates based on it

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL433365A PL240991B1 (en) 2020-03-27 2020-03-27 Method for the preparation of ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid EDDHA and chelates based on it

Publications (2)

Publication Number Publication Date
PL433365A1 true PL433365A1 (en) 2021-10-04
PL240991B1 PL240991B1 (en) 2022-07-11

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ID=78055906

Family Applications (1)

Application Number Title Priority Date Filing Date
PL433365A PL240991B1 (en) 2020-03-27 2020-03-27 Method for the preparation of ethylenediamine-N,N'-bis(2-hydroxyphenylacetic acid EDDHA and chelates based on it

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PL (1) PL240991B1 (en)

Also Published As

Publication number Publication date
PL240991B1 (en) 2022-07-11

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