SU1499865A1 - METHOD OF SIMULTANEOUS PREPARATION OF BUTYL ETHERONS OF MONO- AND DIETHYLENE GLYCOL - Google Patents

METHOD OF SIMULTANEOUS PREPARATION OF BUTYL ETHERONS OF MONO- AND DIETHYLENE GLYCOL

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Publication number
SU1499865A1
SU1499865A1 SU4243123/04A SU4243123A SU1499865A1 SU 1499865 A1 SU1499865 A1 SU 1499865A1 SU 4243123/04 A SU4243123/04 A SU 4243123/04A SU 4243123 A SU4243123 A SU 4243123A SU 1499865 A1 SU1499865 A1 SU 1499865A1
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SU
USSR - Soviet Union
Prior art keywords
stage
amount
catalyst
ethylene oxide
steps
Prior art date
Application number
SU4243123/04A
Other languages
Russian (ru)
Inventor
В.И. Емельянов
Б.Я. Стуль
Б.Б. Чесноков
С.Д. Асриев
О.В. Филатова
В.М. Мусатов
Original Assignee
В.И. Емельянов
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 В.И. Емельянов filed Critical В.И. Емельянов
Priority to SU4243123/04A priority Critical patent/SU1499865A1/en
Application granted granted Critical
Publication of SU1499865A1 publication Critical patent/SU1499865A1/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Способ одновременного получения бутиловых эфиров моно- и диэтиленгликоля многоступенчатым оксиэтилированием бутилового спирта оксидом этилена в присутствии щелочного катализатора при температуре 130 - 160C и давлении 1,5 - 4,0 мПа с последующим выделением целевых продуктов, отличающийся тем, что, с целью увеличения выхода, в качестве катализатора используют гидроксид натрия и процесс ведут в три ступени при последовательном снижении температуры от 160 до 130C по ступеням при одновременной подаче оксида этилена, бутилового спирта и катализатора в количестве 0,02 - 0,05 мас.% на I ступень, с получением реакционной массы и подачей ее на II ступень при дополнительной подаче оксида этилена в количестве, в 2 - 2,2 раза меньшем, чем на первую ступень и добавки 4,4'-дипиридила в количестве, в 10 - 15 раз меньшем, чем количество катализатора, подаваемое на I ступень, с последующей подачей реакционной массы, катализатора в количестве 0,05 - 0,08 мас.% и добавки в указанном количестве на III ступень с последующим выделением целевых продуктов и непрореагировавшего бутилового спирта, который рециркулируют на I ступень с возвратом 25 - 30% полученного бутилового эфира моноэтиленгликоля в зону реакции по ступеням в соотношении I:II:III, равном 3:7:2 соответственно.The method of simultaneous production of mono- and diethylene glycol butyl ethers by multistep oxyethylation of butyl alcohol with ethylene oxide in the presence of an alkaline catalyst at a temperature of 130-160C and a pressure of 1.5-4.0 MPa, followed by release of the target products, characterized in that Sodium hydroxide is used as a catalyst and the process is carried out in three steps with a sequential decrease in temperature from 160 to 130 ° C in steps with simultaneous feeding of ethylene oxide, butyl alcohol and a catalyst in the amount of 0.02 - 0.05 wt.% at stage I, to obtain the reaction mass and feed it to stage II with the additional supply of ethylene oxide in an amount 2 to 2.2 times less than the first stage and additives 4 , 4'-dipyridyl in the amount of 10 - 15 times less than the amount of catalyst fed to the first stage, followed by feeding the reaction mass, the catalyst in an amount of 0.05 - 0.08 wt.% And additives in the specified amount to III stage with subsequent isolation of the target products and unreacted butyl alcohol, which is recycled at stage I returning s 25 - 30% of the monoethylene glycol butyl ether obtained in the reaction zone of steps in a ratio I: II: III, equal to 3: 7: 2 respectively.

SU4243123/04A 1987-03-20 1987-03-20 METHOD OF SIMULTANEOUS PREPARATION OF BUTYL ETHERONS OF MONO- AND DIETHYLENE GLYCOL SU1499865A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU4243123/04A SU1499865A1 (en) 1987-03-20 1987-03-20 METHOD OF SIMULTANEOUS PREPARATION OF BUTYL ETHERONS OF MONO- AND DIETHYLENE GLYCOL

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU4243123/04A SU1499865A1 (en) 1987-03-20 1987-03-20 METHOD OF SIMULTANEOUS PREPARATION OF BUTYL ETHERONS OF MONO- AND DIETHYLENE GLYCOL

Publications (1)

Publication Number Publication Date
SU1499865A1 true SU1499865A1 (en) 2000-06-27

Family

ID=60519539

Family Applications (1)

Application Number Title Priority Date Filing Date
SU4243123/04A SU1499865A1 (en) 1987-03-20 1987-03-20 METHOD OF SIMULTANEOUS PREPARATION OF BUTYL ETHERONS OF MONO- AND DIETHYLENE GLYCOL

Country Status (1)

Country Link
SU (1) SU1499865A1 (en)

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