JPS5780337A - Preparation of polyether glycol - Google Patents

Preparation of polyether glycol

Info

Publication number
JPS5780337A
JPS5780337A JP55155184A JP15518480A JPS5780337A JP S5780337 A JPS5780337 A JP S5780337A JP 55155184 A JP55155184 A JP 55155184A JP 15518480 A JP15518480 A JP 15518480A JP S5780337 A JPS5780337 A JP S5780337A
Authority
JP
Japan
Prior art keywords
amount
alkali
reaction system
sulfuric acid
polyether
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
JP55155184A
Other languages
Japanese (ja)
Other versions
JPS638972B2 (en
Inventor
Kenji Yasuda
Masayuki Endo
Shiyuichi Matsumoto
Toko Harada
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.)
JSR Corp
Nippon Synthetic Chemical Industry Co Ltd
Original Assignee
Nippon Synthetic Chemical Industry Co Ltd
Japan Synthetic Rubber 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 Synthetic Chemical Industry Co Ltd, Japan Synthetic Rubber Co Ltd filed Critical Nippon Synthetic Chemical Industry Co Ltd
Priority to JP55155184A priority Critical patent/JPS5780337A/en
Priority to US06/316,287 priority patent/US4371713A/en
Priority to DE8181305252T priority patent/DE3173834D1/en
Priority to EP81305252A priority patent/EP0051499B1/en
Publication of JPS5780337A publication Critical patent/JPS5780337A/en
Publication of JPS638972B2 publication Critical patent/JPS638972B2/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
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

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

Abstract

PURPOSE: To prepare the titled compound in high yield, by adding a specific amount of an alkali together with water to the reaction system of hydrolyzing a polyether prepared by polymerizing tetrahydrofuran, etc. in the presence of a ring-opening polymerization catalyst such as fuming sulfuric acid, thereby carrying out the complete hydrolysis without using a large amount of water.
CONSTITUTION: A polyether glycol is prepared by the hydrolysis of a polyether obtained by the polymerization of tetrahydrofuran or its mixture with other copolymerizable cyclic ethers in the presence of a ring-opening polymerization catalyst composed mainly of fuming sulfuric acid or fluorosulfuric acid. In the above process, an alkali (e.g. alkali metal hydroxide, ammonia, etc.) is added to the hydrolyzation reaction system. The amount of the alkali is ≥1/4, pref. ≥1/3 of the amount necessary to neutralize the mixture of fuming sulfuric acid, fluorosulfuric acid and water used in the polymerization reaction, and less than the amount to keep the pH of the hydrolyzation reaction system below 3. Since the solubility of the polyether glycol in the acidic aqueous solution is remarkably reduced, the considerable lowering of the yield can be prevented.
COPYRIGHT: (C)1982,JPO&Japio
JP55155184A 1980-11-04 1980-11-06 Preparation of polyether glycol Granted JPS5780337A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55155184A JPS5780337A (en) 1980-11-06 1980-11-06 Preparation of polyether glycol
US06/316,287 US4371713A (en) 1980-11-04 1981-10-29 Process for the preparation of polyether glycol
DE8181305252T DE3173834D1 (en) 1980-11-04 1981-11-04 A process for the preparation of polyether glycols
EP81305252A EP0051499B1 (en) 1980-11-04 1981-11-04 A process for the preparation of polyether glycols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55155184A JPS5780337A (en) 1980-11-06 1980-11-06 Preparation of polyether glycol

Publications (2)

Publication Number Publication Date
JPS5780337A true JPS5780337A (en) 1982-05-19
JPS638972B2 JPS638972B2 (en) 1988-02-25

Family

ID=15600314

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55155184A Granted JPS5780337A (en) 1980-11-04 1980-11-06 Preparation of polyether glycol

Country Status (1)

Country Link
JP (1) JPS5780337A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004211086A (en) * 2002-12-20 2004-07-29 Hodogaya Chem Co Ltd Method for producing polyether polyol with narrowed molecular weight distribution
JP2011162780A (en) * 2010-01-15 2011-08-25 Mitsubishi Chemicals Corp Method for producing polyether polyol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004211086A (en) * 2002-12-20 2004-07-29 Hodogaya Chem Co Ltd Method for producing polyether polyol with narrowed molecular weight distribution
JP2011162780A (en) * 2010-01-15 2011-08-25 Mitsubishi Chemicals Corp Method for producing polyether polyol

Also Published As

Publication number Publication date
JPS638972B2 (en) 1988-02-25

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