METHOD FOR OBTAINING TETRAOXYALKYL-SUBSTITUTED UREAS Russian patent published in 2016 - IPC C07C273/06 C07C275/10 

Abstract RU 2572345 C1

FIELD: chemistry.

SUBSTANCE: invention relates to method for obtaining tetraoxyalkyl-substituted ureas of general formula (I) where R is -(CH2)8-; -(CH2)10-. Method includes addition of diisocyanate to cooled solution of diethanolamine in chloroform in molar ratio of components 1:2, exposure of obtained mixture, filtration and drying of obtained product under pressure. Solution of diethanolamine with chloroform is preliminarily heated to 30°C, addition of diisocyanate is realised at cooling solution to 10-15°C, exposure of obtained mixture is carried out with mixing first for 1 hour at room temperature, then for 1 hour with heating to 30-35°C, filtration and drying of obtained product is carried out under pressure 0.5-1.5 kPa.

EFFECT: method makes it possible to reduce process duration and expenditures for heating with preservation of high target product output.

2 tbl, 2 ex

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RU 2 572 345 C1

Authors

Rogozhina Lina Gennad'Evna

Kuz'Min Mikhail Vladimirovich

Ignat'Ev Valerij Andreevich

Dates

2016-01-10Published

2015-01-12Filed