FIELD: chemistry.
SUBSTANCE: invention relates to organic chemistry, specifically to a method of producing mono- and dicarbamoyl derivatives of methylene diphenyl-4,4'-diamine (MDA), which can be used in agriculture and industry as a hardener in epoxy adhesives and sealants. Method of producing desired derivatives by reacting methylene diphenyl-4,4'-diamine and urea is characterized by that the method is carried out in a melt and involves loading of calculated amounts of initial components into an ideal mixing reactor, mixing for 1 hour at pressure of 1 atm and temperature of 140 °C, cooling and discharging the reaction mixture and analysing the total content of mono- and dicarbamoyl derivatives of methylene diphenyl-4,4'-diamine.
EFFECT: providing a method of producing carbamoyl derivatives of urea, as well as increasing output of end products.
2 cl, 1 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING MONO- AND DICARBAMOYL DERIVATIVES OF METHYLENE DIPHENYL-4,4'-DIAMINE (VERSIONS) | 2024 |
|
RU2830963C1 |
| METHOD OF PRODUCING (POLY)DIAMINODIPHENYLMETHANE AND METHOD OF PRODUCING (POLY)DIPHENYLMETHANE DIISOCYANATE | 2022 |
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| HEAT-RESISTANT THERMOSETTING BINDER FOR POLYMER EQUIPMENT FROM POLYMER COMPOSITE MATERIALS | 2018 |
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|
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| METHOD OF PRODUCING METHYLENE-BRIDGED POLYPHENYL POLYAMINES | 2009 |
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| METHOD OF PRODUCING PRIMARY AROMATIC DIISOCYANATES | 2008 |
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| METHOD FOR PRODUCING METHYLENE DIPHENYL DIISOCYANATE | 2020 |
|
RU2750198C1 |
| 0 |
|
SU469261A3 |
