JPS5491594A - Purification of high-molecular weight alkylene oxide polymer - Google Patents

Purification of high-molecular weight alkylene oxide polymer

Info

Publication number
JPS5491594A
JPS5491594A JP15943877A JP15943877A JPS5491594A JP S5491594 A JPS5491594 A JP S5491594A JP 15943877 A JP15943877 A JP 15943877A JP 15943877 A JP15943877 A JP 15943877A JP S5491594 A JPS5491594 A JP S5491594A
Authority
JP
Japan
Prior art keywords
solution
molecular weight
alkylene oxide
crude
weight alkylene
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
JP15943877A
Other languages
Japanese (ja)
Other versions
JPS6129372B2 (en
Inventor
Hiroshi Wakabayashi
Ryuichi Takagi
Fumio Kawakubo
Katsuhiko Isayama
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP15943877A priority Critical patent/JPS5491594A/en
Publication of JPS5491594A publication Critical patent/JPS5491594A/en
Publication of JPS6129372B2 publication Critical patent/JPS6129372B2/ja
Granted legal-status Critical Current

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  • Polyethers (AREA)

Abstract

PURPOSE: To purify the title polymer in a short neutralization and extraction time, by mixing a crude high-molecular weight alkylene oxide polymer solution in an organic solvent with a proper amount of an aqueous solution of an acid in the presence of a nonionic surfactant under stirring.
CONSTITUTION: A solution of a crude high-molecular weight alkylene oxide (crude polyether) in an organic solvent, e.g. a hydrocarbon, ketone, or alchol, and an alkali metal compound is dispersed in the solution. About 0.01W10 wt. % based on the crude polyether of a nonionic surfactant, e.g. a polyoxyethylenc alkyl ester (ether), having preferably an HLB ≤ b is dissolved in the solution. An aqueous solution of an acid is added and stirred to adjust the PH of the aqueous layer to 7 or below, and left to stand after stopping the stirring. the organic solvent layer is separated to distill away the solvent, thus giving a purified polyether.
COPYRIGHT: (C)1979,JPO&Japio
JP15943877A 1977-12-29 1977-12-29 Purification of high-molecular weight alkylene oxide polymer Granted JPS5491594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15943877A JPS5491594A (en) 1977-12-29 1977-12-29 Purification of high-molecular weight alkylene oxide polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15943877A JPS5491594A (en) 1977-12-29 1977-12-29 Purification of high-molecular weight alkylene oxide polymer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1129386A Division JPS61203125A (en) 1986-01-21 1986-01-21 Purification of high molecular weight alkylene oxide polymer

Publications (2)

Publication Number Publication Date
JPS5491594A true JPS5491594A (en) 1979-07-20
JPS6129372B2 JPS6129372B2 (en) 1986-07-07

Family

ID=15693746

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15943877A Granted JPS5491594A (en) 1977-12-29 1977-12-29 Purification of high-molecular weight alkylene oxide polymer

Country Status (1)

Country Link
JP (1) JPS5491594A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168623A (en) * 1982-03-31 1983-10-05 Kanegafuchi Chem Ind Co Ltd Purification of high-molecular weight alkylene oxide polymer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58168623A (en) * 1982-03-31 1983-10-05 Kanegafuchi Chem Ind Co Ltd Purification of high-molecular weight alkylene oxide polymer

Also Published As

Publication number Publication date
JPS6129372B2 (en) 1986-07-07

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