JPS5622323A - Removal of alkali catalyst from polyether-polyol - Google Patents

Removal of alkali catalyst from polyether-polyol

Info

Publication number
JPS5622323A
JPS5622323A JP9883779A JP9883779A JPS5622323A JP S5622323 A JPS5622323 A JP S5622323A JP 9883779 A JP9883779 A JP 9883779A JP 9883779 A JP9883779 A JP 9883779A JP S5622323 A JPS5622323 A JP S5622323A
Authority
JP
Japan
Prior art keywords
polyether
polyol
sampi
alkali catalyst
removal
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
JP9883779A
Other languages
Japanese (ja)
Inventor
Yoshihiko Tanke
Takeo Wada
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.)
Takeda Pharmaceutical Co Ltd
Original Assignee
Takeda 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 Takeda Chemical Industries Ltd filed Critical Takeda Chemical Industries Ltd
Priority to JP9883779A priority Critical patent/JPS5622323A/en
Publication of JPS5622323A publication Critical patent/JPS5622323A/en
Pending legal-status Critical Current

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  • Polyethers (AREA)

Abstract

PURPOSE: To efficiently remove an alkali catalyst from a polyether-polyol containing an alkali catalyst, by contacting the polyether-polyol with 'sampi'.
CONSTITUTION: The alkali catalyst comtained in a polyether-polyol is removed by contacting the polyether-polyol containing an alkali catalyst with 'sampi' in the presence of water. In this operation, the sampi having the adsorbed alkali catalyst is easily separated from the polyether-polyol within a short time, for example, by filtration, and, in addition, the water added to the system can be removed by the sampi. The term 'sampi' is the generic name of clay minerals having a number of active hydroxyl groups on the surface. A preferred sampi which can be used is one obtained by grinding a digged, raw sampi ore into powder or a particles and drying them. The polyether-polyol which can be used is one obtained by adding an active hydrogen-containing compound to an alkylene oxide in the presence of an alkali catalyst.
COPYRIGHT: (C)1981,JPO&Japio
JP9883779A 1979-08-02 1979-08-02 Removal of alkali catalyst from polyether-polyol Pending JPS5622323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9883779A JPS5622323A (en) 1979-08-02 1979-08-02 Removal of alkali catalyst from polyether-polyol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9883779A JPS5622323A (en) 1979-08-02 1979-08-02 Removal of alkali catalyst from polyether-polyol

Publications (1)

Publication Number Publication Date
JPS5622323A true JPS5622323A (en) 1981-03-02

Family

ID=14230374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9883779A Pending JPS5622323A (en) 1979-08-02 1979-08-02 Removal of alkali catalyst from polyether-polyol

Country Status (1)

Country Link
JP (1) JPS5622323A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02135239A (en) * 1988-11-15 1990-05-24 Sumitomo Chem Co Ltd Surfactant-containing resin composition having improved heat stability
WO1999009087A1 (en) * 1997-08-18 1999-02-25 Bayer Aktiengesellschaft Method for preparing polyether polyols
US6930210B2 (en) * 2002-02-25 2005-08-16 Repsol Quimica S.A. Process to produce polyether polyols

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02135239A (en) * 1988-11-15 1990-05-24 Sumitomo Chem Co Ltd Surfactant-containing resin composition having improved heat stability
WO1999009087A1 (en) * 1997-08-18 1999-02-25 Bayer Aktiengesellschaft Method for preparing polyether polyols
US6350920B1 (en) * 1997-08-18 2002-02-26 Bayer Aktiengesellschaft Method for preparing polyether polyols
US6930210B2 (en) * 2002-02-25 2005-08-16 Repsol Quimica S.A. Process to produce polyether polyols

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