SU132813A1 - The method of cleaning technical diphenylolpropane - Google Patents

The method of cleaning technical diphenylolpropane

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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
Application number
SU654398A
Other languages
Russian (ru)
Inventor
П.М. Богатырев
М.Р. Гейниш
Э.И. Корф
Г.А. Левкович
Б.Р. Лившиц
Original Assignee
П.М. Богатырев
М.Р. Гейниш
Э.И. Корф
Г.А. Левкович
Б.Р. Лившиц
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by П.М. Богатырев, М.Р. Гейниш, Э.И. Корф, Г.А. Левкович, Б.Р. Лившиц filed Critical П.М. Богатырев
Priority to SU654398A priority Critical patent/SU132813A1/en
Application granted granted Critical
Publication of SU132813A1 publication Critical patent/SU132813A1/en

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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.

SU654398A 1960-02-13 1960-02-13 The method of cleaning technical diphenylolpropane SU132813A1 (en)

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

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Family Applications (1)

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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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