JPS5622323A - Removal of alkali catalyst from polyether-polyol - Google Patents
Removal of alkali catalyst from polyether-polyolInfo
- 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
Links
Landscapes
- 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
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)
| 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 |
-
1979
- 1979-08-02 JP JP9883779A patent/JPS5622323A/en active Pending
Cited By (4)
| 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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