SU60204A1 - The method of cleaning technical benzoic acid - Google Patents
The method of cleaning technical benzoic acidInfo
- Publication number
- SU60204A1 SU60204A1 SU3248D SU3248D SU60204A1 SU 60204 A1 SU60204 A1 SU 60204A1 SU 3248 D SU3248 D SU 3248D SU 3248 D SU3248 D SU 3248D SU 60204 A1 SU60204 A1 SU 60204A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- benzoic acid
- cleaning technical
- acid
- phthalic
- technical
- Prior art date
Links
Landscapes
- Detergent Compositions (AREA)
Description
Бензойна кислота, полученна из фталевого ангидрида, содержит некоторое количество фташевой кислоты . Дальнейша очистка продукта производитс , обычно, путем перекристаллИЗации ее из воды. Такой метод очистки -весьма неудоббн, так как требует больших объемов аппаратуры и приводит к значительным потер м продукта.Benzoic acid, derived from phthalic anhydride, contains some phthasic acid. Further purification of the product is usually carried out by recrystallizing it from water. This method of cleaning is very inconvenient, since it requires large amounts of equipment and leads to significant product losses.
Авторы насто щего изобретен пре(длагают .очищать техническую бензоййую кислоту от фталевой путем сублимации, Провод сублимацию в пр сутствии глицерина и касторового масла. При проведении процесса фталева кислота переходит во фталевый ангидрид, который реагирует с глицерином и касторовым маслом, образу глифталевые смолы. Таким образом, вс фталева кислота св зываетс в виде невозгон ющегос продукта, в то врем как бензойна кислота возгон етс и сублимируетс в чистом виде.The authors of the present invention were invented (they propose to clean technical benzoic acid from phthalic by sublimation. The wire is sublimated in the presence of glycerin and castor oil. During the process, phthalic acid is converted to phthalic anhydride, which reacts with glycerol and castor oil to form glyphthalic resins. thus, all phthalic acid is bound in the form of a non-accelerating product, while benzoic acid is sublimated and sublimated in pure form.
При м е р. В аппарат, приспособленный дл сублимации, загружаетс техническа бензойна кислота. Сю1да же приливаетс касторовое масло и глицерин в количестве 1% от загрузки на каждые 0,19 фталевой кислоты. Температуру довод т до 140° и дают слабый ток во духа, подо гретого до той же температуры . Сублимат собираетс в конденсаторах в виде совершенно чистого продукта.An example. A technical benzoic acid is charged to the apparatus adapted for sublimation. On the other hand, castor oil and glycerin are added in an amount of 1% of the load for every 0.19 phthalic acid. The temperature is brought to 140 ° C and a weak current is given in the spirit heated to the same temperature. Sublimate is collected in capacitors as a completely pure product.
Предмет изобретени .The subject matter of the invention.
Способ очистки технической бензойной кислоты от фталевой путем сублимации., о т л и ч а ю щ и и с тем, что последнюю провод т в присутствии глицерина и касторового масла с целью св зывши фтадовой кислоты в виде глифталевых ймол.The method of purification of technical benzoic acid from phthalic by sublimation., Tl and h and y and the fact that the latter is carried out in the presence of glycerol and castor oil in order to bind phtadic acid in the form of glyphthalic ymol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU3248D SU60204A1 (en) | 1940-05-04 | 1940-05-04 | The method of cleaning technical benzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU3248D SU60204A1 (en) | 1940-05-04 | 1940-05-04 | The method of cleaning technical benzoic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU60204A1 true SU60204A1 (en) | 1940-11-30 |
Family
ID=51211946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU3248D SU60204A1 (en) | 1940-05-04 | 1940-05-04 | The method of cleaning technical benzoic acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU60204A1 (en) |
-
1940
- 1940-05-04 SU SU3248D patent/SU60204A1/en active
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