SU116641A1 - The method of obtaining aliphatic dibasic acids - Google Patents
The method of obtaining aliphatic dibasic acidsInfo
- Publication number
- SU116641A1 SU116641A1 SU598945A SU598945A SU116641A1 SU 116641 A1 SU116641 A1 SU 116641A1 SU 598945 A SU598945 A SU 598945A SU 598945 A SU598945 A SU 598945A SU 116641 A1 SU116641 A1 SU 116641A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- dibasic acids
- aliphatic dibasic
- oxidation
- acids
- obtaining aliphatic
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Известны способы получени алифатических двухосновных кислот окислением жирных кислот азотной кислотой- Недостатками этих способов вл ютс высока стоимость жирных кислот и значительный расход азотной кислоты, св занный с необходимостью окислени углеводородной цепи. Кроме того, сам процеос окислени длителен и требует высокой температуры.Methods are known for producing aliphatic dibasic acids by fatty acid oxidation with nitric acid. The disadvantages of these methods are the high cost of fatty acids and the significant consumption of nitric acid associated with the need to oxidize the hydrocarbon chain. In addition, the oxidation process itself is long and requires a high temperature.
Описываемый способ получени алифатических двухосновных кислот позвол ет удешевить процесс их получени . Дл этого в качестве сырь примен ют продукты глубокого окислени парафинов воздухом (оксиКИ1СЛОТЫ ) и окисление ведут при 60-100°.The described method for the preparation of aliphatic dibasic acids makes it possible to reduce the cost of their production. For this purpose, products of deep oxidation of paraffins with air (hydroxyalkyls) are used as raw materials and the oxidation is carried out at 60-100 °.
Способ осуществл ют следующим образом.The method is carried out as follows.
100 г оксидата, содержащего 60% оксикислот и 40% непрореагировавшего парафина в смеси с жирными кислотами, полученного при окислении воздухом парафинов, выделенных при карбамидной депарафинизации дизельных топлив, окисл ют при 75-80° 57%-ной азотной ки.слотой , вз той в количестве 320 г, в течение 4 час. По окончании окислени концентраци азотной кислоты снижаетс до 25%.100 g of an oxidate containing 60% hydroxy acids and 40% unreacted paraffin mixed with fatty acids, obtained by air oxidation of paraffins isolated during carbamide dewaxing of diesel fuels, is oxidized at 75-80 ° 57% nitric acid taken in the amount of 320 g for 4 hours. At the end of the oxidation, the concentration of nitric acid decreases to 25%.
Из нижнего водного сло после отгонки азотной кислоты получают 38 г двухосновных кислот; пимелиновой-3%, адипиновой-49%, глутаровой-19Vo , нтарной-27% и щавелевой-2%.After distilling off the nitric acid, 38 g of dibasic acids are obtained from the lower aqueous layer; Pimelin-3%, adipin-49%, glutaric-19Vo, amber-27% and oxalic-2%.
Верхний слой содержит 42 г неизмененного парафина в смеси с жирными кислотами и 9,7 г оксикислот.The top layer contains 42 g of unchanged paraffin in a mixture with fatty acids and 9.7 g of hydroxy acids.
Способ получени алифатических двухосновных кислот окислением жирных кислот азотной кислотой, отличающийс тем, что, с целью удешевлени процесса, в качестве сырь примен ют продукты глубокого окислени парафинов воздухом (оксикислоты) и окисление ведут при 60-100°.The method of producing aliphatic dibasic acids by fatty acid oxidation with nitric acid, characterized in that, in order to reduce the cost of the process, the products of deep paraffin oxidation with air (hydroxy acids) and oxidation are used at 60-100 °.
Предмет изобретени Subject invention
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU598945A SU116641A1 (en) | 1958-05-04 | 1958-05-04 | The method of obtaining aliphatic dibasic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU598945A SU116641A1 (en) | 1958-05-04 | 1958-05-04 | The method of obtaining aliphatic dibasic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU116641A1 true SU116641A1 (en) | 1958-11-30 |
Family
ID=48388851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU598945A SU116641A1 (en) | 1958-05-04 | 1958-05-04 | The method of obtaining aliphatic dibasic acids |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU116641A1 (en) |
-
1958
- 1958-05-04 SU SU598945A patent/SU116641A1/en active
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