SU462812A1 - The method of joint production of phenol, acetone and methyl methyl styrene - Google Patents

The method of joint production of phenol, acetone and methyl methyl styrene

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Publication number
SU462812A1
SU462812A1 SU1764738A SU1764738A SU462812A1 SU 462812 A1 SU462812 A1 SU 462812A1 SU 1764738 A SU1764738 A SU 1764738A SU 1764738 A SU1764738 A SU 1764738A SU 462812 A1 SU462812 A1 SU 462812A1
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SU
USSR - Soviet Union
Prior art keywords
methyl
phenol
acetone
joint production
styrene
Prior art date
Application number
SU1764738A
Other languages
Russian (ru)
Inventor
Виль Абрамович Левштейн
Вячеслав Брониславович Фальковский
Нина Ивановна Чапланова
Нина Григорьевна Славкина
Клара Васильевна Панина
Original Assignee
Предприятие П/Я Р-6235
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Publication date
Application filed by Предприятие П/Я Р-6235 filed Critical Предприятие П/Я Р-6235
Priority to SU1764738A priority Critical patent/SU462812A1/en
Application granted granted Critical
Publication of SU462812A1 publication Critical patent/SU462812A1/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/52Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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

Description

(54) СПОСОБ СОВМЕСТНОГО ПОЛУЧЕНИЯ И а-МЕТИЛСТИРОЛА ФЕНОЛА, АЦЕТОНА(54) METHOD OF JOINT PREPARATION AND a-METHYL-STYROL PHENOL, ACETONE

при кислотном разложении 90%-ной гидроперекиси изопропилбензола примерно через 1 мин.after acid decomposition of 90% isopropyl benzene hydroperoxide after about 1 minute.

Из реактора через сифон непрерывно со скоростью 200 мл/час вывод т реакционную смесь, причем длительность ее контакта с кислотой в реакторе 3 мин.A siphon from the reactor was continuously withdrawn at a rate of 200 ml / hour, the reaction mixture was removed, and the duration of its contact with the acid in the reactor was 3 minutes.

Полученную реакционную массу с температурой 60°С обрабатывают 2-2,3%-ным раствором щелочи до рН среды 6,5-7,0.The resulting reaction mass with a temperature of 60 ° C is treated with 2-2.3% alkali solution to a pH of 6.5-7.0.

Дл  сравнени  провод т процесс, как описано выше, но после контактировани  с серной кислотой в течение 3 мин гор чую реакционную массу выдерживают при 60°С в течение 4 час, а затем нейтрализуют водным раствором едкого натра до рН 6,5-7,0. Реакционна  масса, полученна  по предлагаемому способу, содержит (в вес. %): фенол 52,7; хметнлстирол 4,2; кумилфенол отсутствует; диметилфенилкарбинол 2,5; гидроперекись елеДы . Реакционна  масса, полученна  по известному способу, имеет следующий состав (в вес. %): фенол 50,3; а-метилстирол 0,5; кумилфенол 5,6; диметилфенилкарбинол отсутствует , гидроперекись кумола 0,1.For comparison, the process is carried out as described above, but after contacting with sulfuric acid for 3 minutes, the hot reaction mass is maintained at 60 ° C for 4 hours, and then neutralized with an aqueous solution of sodium hydroxide to pH 6.5-7.0 . The reaction mass obtained by the proposed method contains (in wt.%): Phenol 52,7; hmetnstyryol 4,2; cumylphenol is absent; dimethylphenylcarbinol 2.5; hydroperoxide oil The reaction mass obtained by a known method has the following composition (in wt.%): Phenol 50.3; a-methylstyrene 0.5; cumylphenol 5.6; dimethylphenylcarbinol is absent, cumene hydroperoxide is 0.1.

Предмет изобретени Subject invention

Способ совместного получени  фенола, ацетона и «-метилстирола разложением смеси гидроперекиси кумола и диметилфенилкарбинола при нагревании в присутствии катализатора - серной кислоты с применением охлаждени  реакционной массы и нейтрализации присутствующей в ней серной кислоты с последующим выделением целевых продуктов известными приемами, отличающийс  тем, что, с целью повыщени  выхода фенола и а-метилстирола , гор чую реакционную массу нейтрализуют непосредственно через 2-3 мин после завершени  процесса разложени  с последующим ее охлаждением.The method of joint preparation of phenol, acetone and α-methylstyrene by decomposition of a mixture of cumene hydroperoxide and dimethylphenylcarbinol by heating in the presence of a catalyst — sulfuric acid, using cooling the reaction mass and neutralizing the sulfuric acid present in it, with the following In order to increase the yield of phenol and α-methylstyrene, the hot reaction mass is neutralized immediately after 2-3 minutes after completion of the decomposition process, followed by they cooled it.

SU1764738A 1972-03-28 1972-03-28 The method of joint production of phenol, acetone and methyl methyl styrene SU462812A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1764738A SU462812A1 (en) 1972-03-28 1972-03-28 The method of joint production of phenol, acetone and methyl methyl styrene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1764738A SU462812A1 (en) 1972-03-28 1972-03-28 The method of joint production of phenol, acetone and methyl methyl styrene

Publications (1)

Publication Number Publication Date
SU462812A1 true SU462812A1 (en) 1975-03-05

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SU (1) SU462812A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004058672A1 (en) * 2002-12-16 2004-07-15 Exxonmobil Chemical Patents Inc. Co-production of phenol, acetone, alpha-methylstyrene and propylene oxide, and catalyst therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004058672A1 (en) * 2002-12-16 2004-07-15 Exxonmobil Chemical Patents Inc. Co-production of phenol, acetone, alpha-methylstyrene and propylene oxide, and catalyst therefor

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