SU132813A1 - The method of cleaning technical diphenylolpropane - Google Patents
The method of cleaning technical diphenylolpropaneInfo
- Publication number
- SU132813A1 SU132813A1 SU654398A SU654398A SU132813A1 SU 132813 A1 SU132813 A1 SU 132813A1 SU 654398 A SU654398 A SU 654398A SU 654398 A SU654398 A SU 654398A SU 132813 A1 SU132813 A1 SU 132813A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- diphenylolpropane
- cleaning technical
- technical
- product
- quality
- Prior art date
Links
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Чистота технического дифенилоларопана вл етс важнейшим условием улучшени качества эпоксидных смол. Обычно примен емые методы очистки технического дифенилолпронана, основанные на перекристаллизации или кислотнощелочном переосаждении, хот и привод т к улучшению качества продукта, но значительно удлин ют технологический процесс, вл сь его дополнительными стади ми.The purity of technical diphenylolaropan is the most important condition for improving the quality of epoxy resins. The commonly used methods of purification of technical diphenylolpronane, based on recrystallization or acid-base reprecipitation, although lead to an improvement in the quality of the product, but considerably prolong the technological process, being its additional stages.
ПредлагаелТый способ позвол ет сократить технологический процесс и улучшить качество дифенилолпропапа.The proposed method allows to reduce the technological process and improve the quality of diphenylolpropane.
Это достигаетс тем, что пасту дифенилолпропана обрабатывают 4%-ным водным раствором аммиака.This is achieved by treating the diphenylolpropane paste with a 4% aqueous ammonia solution.
Экстракци содержашихс в дифенилолпропане примесей 4%-ныу. водным раствором аммиагса значительно сокрашает число промывок в производстве дифени.чолпропана и на 10 повышает температуру плавлени готового продукта.Extraction of 4% impurities contained in diphenylolpropane. Aqueous solution of ammonia significantly reduces the number of washes in the production of diphenyl.cholpropane and raises the melting point of the finished product by 10 times.
Пример. Пасту дифенилолпропана, вз тую после третьей промывки в производстве технического продукта, разбавл ют водой в соотношении 1:1 и нейтрализуют неотмытую серную кислоту раствором соды с концентрацией 7%. Затем реакционную массу отмывают от сульфато и обрабатывают 4%-ным водным раствором аммиака в весовом соотношении соответственно 1 : 5. После 2-часовой выдержки при температуре 20° реакционную массу отфильтровывают и сушат при 70-80°.Example. Diphenylolpropane paste, taken after the third wash in the production of technical product, is diluted with water in a 1: 1 ratio and the unwashed sulfuric acid is neutralized with soda solution with a concentration of 7%. Then the reaction mass is washed from sulfate and treated with 4% aqueous ammonia solution in a weight ratio of 1: 5, respectively. After 2 hours at 20 °, the reaction mass is filtered and dried at 70-80 °.
Полученньш продукт имеет т. пл. 150,5-155,0° (т. пл. обычного технического дифенилолпропана 140-143°).The resulting product has a mp. 150.5-155.0 ° (t. Pl. Normal technical diphenylolpropane 140-143 °).
Предмет изобретени Subject invention
Способ очистки технического дифенилолпропана, отличаюшичс тем, что, с целью улучшени качества продукта и сокращени технологического процесса, пасту дифенилолпропана обрабатывают 4%-ным водным раствором аммиака.The method of purification of technical diphenylolpropane, differs in that, in order to improve the quality of the product and reduce the technological process, the diphenylolpropane paste is treated with a 4% aqueous solution of ammonia.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU654398A SU132813A1 (en) | 1960-02-13 | 1960-02-13 | The method of cleaning technical diphenylolpropane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU654398A SU132813A1 (en) | 1960-02-13 | 1960-02-13 | The method of cleaning technical diphenylolpropane |
Publications (1)
Publication Number | Publication Date |
---|---|
SU132813A1 true SU132813A1 (en) | 1960-11-30 |
Family
ID=48403831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU654398A SU132813A1 (en) | 1960-02-13 | 1960-02-13 | The method of cleaning technical diphenylolpropane |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU132813A1 (en) |
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1960
- 1960-02-13 SU SU654398A patent/SU132813A1/en active
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