JPS56118024A - Preparation of high-purity alkylene glycol - Google Patents

Preparation of high-purity alkylene glycol

Info

Publication number
JPS56118024A
JPS56118024A JP2043480A JP2043480A JPS56118024A JP S56118024 A JPS56118024 A JP S56118024A JP 2043480 A JP2043480 A JP 2043480A JP 2043480 A JP2043480 A JP 2043480A JP S56118024 A JPS56118024 A JP S56118024A
Authority
JP
Japan
Prior art keywords
stage
catalyst
titled compound
fed
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
JP2043480A
Other languages
Japanese (ja)
Other versions
JPS6125693B2 (en
Inventor
Hiroshi Odanaka
Takeshi Yamamoto
Toshihiko Kumazawa
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.)
Nippon Shokubai Co Ltd
Original Assignee
Nippon Shokubai Co Ltd
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 Nippon Shokubai Co Ltd filed Critical Nippon Shokubai Co Ltd
Priority to JP2043480A priority Critical patent/JPS56118024A/en
Publication of JPS56118024A publication Critical patent/JPS56118024A/en
Publication of JPS6125693B2 publication Critical patent/JPS6125693B2/ja
Granted 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
    • Y02P20/584—Recycling of catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To obtain the titled compound advantageously, by reacting an alkylene oxide with water in the presence of a specific catalyst under specific conditions in the first stage, recovering the catalyst from the resultant solution and recycling the catalyst to the first stage in the second stage, and dehydrating the distillate in the third stage.
CONSTITUTION: (I) An alkylene oxide and water are fed into a reactor with a catalyst solution containing a compound of molybdenum and/or tungsten, and reacted at pH 5W10, to prepare the resultant solution containing the titled compound in the first stage. (II) The resultant solution is then fed into a catalyst recovering tower, and separated through a distilling procedure into a distillate containing the titled compound and bottoms from the catalyst recovering tower containing water in an amount of 0.1wt% or more based on the catalyst. The latter is recycled to the above-mentioned reactor in the second stage. (III) The distillate is further fed into a dehydrating tower to distill water, and the bottoms are fed into the stage for the separation of the titled compound in the third stage. In these three stages (I), (II) and (III) mentioned above, the titled compound useful as a raw material for a polyester, etc., is obtained in high purity and continuously, on an industrial scale.
COPYRIGHT: (C)1981,JPO&Japio
JP2043480A 1980-02-22 1980-02-22 Preparation of high-purity alkylene glycol Granted JPS56118024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2043480A JPS56118024A (en) 1980-02-22 1980-02-22 Preparation of high-purity alkylene glycol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2043480A JPS56118024A (en) 1980-02-22 1980-02-22 Preparation of high-purity alkylene glycol

Publications (2)

Publication Number Publication Date
JPS56118024A true JPS56118024A (en) 1981-09-16
JPS6125693B2 JPS6125693B2 (en) 1986-06-17

Family

ID=12026930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2043480A Granted JPS56118024A (en) 1980-02-22 1980-02-22 Preparation of high-purity alkylene glycol

Country Status (1)

Country Link
JP (1) JPS56118024A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239429A (en) * 1984-05-09 1985-11-28 サイエンティフィック・デザイン・カンパニー・インコーポレーテッド Method of reducing ethylene carbonate content in ethylene glycol
EP1484300A1 (en) * 2003-06-06 2004-12-08 Shell Internationale Research Maatschappij B.V. Process for the production of alkylene glycols using homogeneous catalysts

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625125A (en) * 1979-08-06 1981-03-10 Nippon Shokubai Kagaku Kogyo Co Ltd Preparation of alkylene glycol

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625125A (en) * 1979-08-06 1981-03-10 Nippon Shokubai Kagaku Kogyo Co Ltd Preparation of alkylene glycol

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60239429A (en) * 1984-05-09 1985-11-28 サイエンティフィック・デザイン・カンパニー・インコーポレーテッド Method of reducing ethylene carbonate content in ethylene glycol
EP1484300A1 (en) * 2003-06-06 2004-12-08 Shell Internationale Research Maatschappij B.V. Process for the production of alkylene glycols using homogeneous catalysts
US7683221B2 (en) 2003-06-06 2010-03-23 Shell Oil Company Process for the production of alkylene glycols using homogeneous catalysts

Also Published As

Publication number Publication date
JPS6125693B2 (en) 1986-06-17

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