JPS568335A - Preparation of alkylene glycol - Google Patents

Preparation of alkylene glycol

Info

Publication number
JPS568335A
JPS568335A JP8346179A JP8346179A JPS568335A JP S568335 A JPS568335 A JP S568335A JP 8346179 A JP8346179 A JP 8346179A JP 8346179 A JP8346179 A JP 8346179A JP S568335 A JPS568335 A JP S568335A
Authority
JP
Japan
Prior art keywords
alkylene
amount
carbonate
catalyst
water
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP8346179A
Other languages
Japanese (ja)
Other versions
JPS5822449B2 (en
Inventor
Tetsuo Hara
Hideki Mori
Atsushi Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP54083461A priority Critical patent/JPS5822449B2/en
Publication of JPS568335A publication Critical patent/JPS568335A/en
Publication of JPS5822449B2 publication Critical patent/JPS5822449B2/en
Expired legal-status Critical Current

Links

Classifications

    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

PURPOSE: To prepare an alkylene glycol in high yield, using nearly atoichiometric amount of water, without using CO2 gas, by the hydration reaction of an alkylene oxide in the presence of an alkylene carbonate using an alkali halide as a catalyst.
CONSTITUTION: An alkylene carbonate such as ethylene carbonate, is added to an alkylene oxide such as ethylene oxide, and the mixture is reacted with water in the presence of an alkali halide catalyst (e.g. NaI, NaCl, etc.) to afford the objective compound such as ethylene glycol. The amount of water is from slightly excess to about 2.5 times the stoichiometric amount, and the amount of the catalyst is ≥0.05 based on the alkylene oxide. The molar ratio of the alkylene carbonate to the alkylene oxide is usually 0.05W0.20 to 1.
EFFECT: The reaction system does not contain a large amount of gaseous phase, and the reaction can be carried out smoothly with easy operation.
COPYRIGHT: (C)1981,JPO&Japio
JP54083461A 1979-07-03 1979-07-03 Production method of alkylene glycol Expired JPS5822449B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54083461A JPS5822449B2 (en) 1979-07-03 1979-07-03 Production method of alkylene glycol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083461A JPS5822449B2 (en) 1979-07-03 1979-07-03 Production method of alkylene glycol

Publications (2)

Publication Number Publication Date
JPS568335A true JPS568335A (en) 1981-01-28
JPS5822449B2 JPS5822449B2 (en) 1983-05-09

Family

ID=13803094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54083461A Expired JPS5822449B2 (en) 1979-07-03 1979-07-03 Production method of alkylene glycol

Country Status (1)

Country Link
JP (1) JPS5822449B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU287916A1 (en) * С. Левин , А. Л. Шапиро METHOD OF OBTAINING ALKYLENE GLYCOLES
JPS4924448A (en) * 1972-06-27 1974-03-04

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU287916A1 (en) * С. Левин , А. Л. Шапиро METHOD OF OBTAINING ALKYLENE GLYCOLES
JPS4924448A (en) * 1972-06-27 1974-03-04

Also Published As

Publication number Publication date
JPS5822449B2 (en) 1983-05-09

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