JPS5758642A - Preparation of polyethylene glycolic acid - Google Patents

Preparation of polyethylene glycolic acid

Info

Publication number
JPS5758642A
JPS5758642A JP55133263A JP13326380A JPS5758642A JP S5758642 A JPS5758642 A JP S5758642A JP 55133263 A JP55133263 A JP 55133263A JP 13326380 A JP13326380 A JP 13326380A JP S5758642 A JPS5758642 A JP S5758642A
Authority
JP
Japan
Prior art keywords
reaction
temperature
polyethylene glycol
formula
aqueous solution
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.)
Pending
Application number
JP55133263A
Other languages
Japanese (ja)
Inventor
Shogo Nukina
Eisaku Kotani
Yoshio Kano
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.)
Sanyo Chemical Industries Ltd
Original Assignee
Sanyo Chemical Industries 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 Sanyo Chemical Industries Ltd filed Critical Sanyo Chemical Industries Ltd
Priority to JP55133263A priority Critical patent/JPS5758642A/en
Publication of JPS5758642A publication Critical patent/JPS5758642A/en
Pending 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 obtain the titled compound, useful as a surfactant, etc., and having a low to high molecular weight in high purity and yield economically, by oxidizing polyethylene glycol with a gas containing O2 in the presence of a platinum catalyst while increasing the temperature of the reaction system with the progress of the reaction.
CONSTITUTION: A polyethylene glycol, expressed by the formula HO(CH2CH2)nH (n is 2W500) and a mixture thereof, and having a polymerization degree of 2W500, preferably in the form of an aqueous solution, is oxidized with a gas containing O2 in the presence of a platinum catalyst under a pressure of 2W6kg/cm2 at 40W100°C, preferably 40W60°C, while increasing the temperature of the reaction system with the pregress of the reaction to the final temperature of 70W100°C at the completion of the reaction to give the aimed compound expressed by the formula HOOCCH2O (CH2CH2O)n-2CH2COOH and a mixture thereof. The temperature is increased at a temperature satisfying formulaI[T(°C) is the reaction temperature; X(%) is reaction rate], preferably formula II. The concentration of the polyethylene glycol in the aqueous solution is preferably 20W80%.
COPYRIGHT: (C)1982,JPO&Japio
JP55133263A 1980-09-24 1980-09-24 Preparation of polyethylene glycolic acid Pending JPS5758642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55133263A JPS5758642A (en) 1980-09-24 1980-09-24 Preparation of polyethylene glycolic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55133263A JPS5758642A (en) 1980-09-24 1980-09-24 Preparation of polyethylene glycolic acid

Publications (1)

Publication Number Publication Date
JPS5758642A true JPS5758642A (en) 1982-04-08

Family

ID=15100521

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55133263A Pending JPS5758642A (en) 1980-09-24 1980-09-24 Preparation of polyethylene glycolic acid

Country Status (1)

Country Link
JP (1) JPS5758642A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653413A2 (en) * 1989-08-26 1995-05-17 Hoechst Aktiengesellschaft Detergent composition containing ether-carboxylic acids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0653413A2 (en) * 1989-08-26 1995-05-17 Hoechst Aktiengesellschaft Detergent composition containing ether-carboxylic acids
EP0653413A3 (en) * 1989-08-26 1995-06-28 Hoechst Ag Detergent composition containing ether-carboxylic acids.

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