JPS5698232A - Purification of polyetherpolyol - Google Patents
Purification of polyetherpolyolInfo
- Publication number
- JPS5698232A JPS5698232A JP147480A JP147480A JPS5698232A JP S5698232 A JPS5698232 A JP S5698232A JP 147480 A JP147480 A JP 147480A JP 147480 A JP147480 A JP 147480A JP S5698232 A JPS5698232 A JP S5698232A
- Authority
- JP
- Japan
- Prior art keywords
- polyol
- alkali metal
- adjust
- aqueous solution
- prepared
- 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
- 238000000746 purification Methods 0.000 title 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 229920005862 polyol Polymers 0.000 abstract 3
- 150000003077 polyols Chemical class 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 2
- 239000003054 catalyst Substances 0.000 abstract 2
- 239000011734 sodium Substances 0.000 abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 abstract 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910000288 alkali metal carbonate Inorganic materials 0.000 abstract 1
- 150000008041 alkali metal carbonates Chemical class 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000004090 dissolution Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 235000010755 mineral Nutrition 0.000 abstract 1
- VLYFRFHWUBBLRR-UHFFFAOYSA-L potassium;sodium;carbonate Chemical compound [Na+].[K+].[O-]C([O-])=O VLYFRFHWUBBLRR-UHFFFAOYSA-L 0.000 abstract 1
- 239000012264 purified product Substances 0.000 abstract 1
- 239000011369 resultant mixture Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Polyethers (AREA)
Abstract
PURPOSE: An alkali metal hydroxide or other compounds are adde to the titled polyol which has been prepared in the presence of an alkaline catalyst to adjust the ratio of K/Na to a specific value and the polyol is purified, thus facilitating the filtration and improving the problems of turbidity and odor.
CONSTITUTION: A crude polyetherpolyol prepared in the presence of an alkaline catalyst is combined with an alkali metal hydroxide and/or an alkali metal carbonate or bicarbonate such as sodium hydroxide, potassium sodium carbonate or sodium bicarbonate, preferably with its aqueous solution, whereby the equivalent ratio of K/Na in the polyol is adjusted to 3/1W1/3. The resultant mixture is neutralized with a mineral acid with a dissolution constant of higher than 10-3 in the aqueous solution such as sulfuric acid or hydrochloric acid to adjust the pH to 6.5W 7.5. Then, water is removed under reduced pressure and filtered to give to purified product.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP147480A JPS5698232A (en) | 1980-01-09 | 1980-01-09 | Purification of polyetherpolyol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP147480A JPS5698232A (en) | 1980-01-09 | 1980-01-09 | Purification of polyetherpolyol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5698232A true JPS5698232A (en) | 1981-08-07 |
Family
ID=11502446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP147480A Pending JPS5698232A (en) | 1980-01-09 | 1980-01-09 | Purification of polyetherpolyol |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5698232A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0583251A4 (en) * | 1991-04-29 | 1994-10-05 | Olin Corp | Process for purifying and end-capping polyols made using double metal cyanide catalysts |
-
1980
- 1980-01-09 JP JP147480A patent/JPS5698232A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0583251A4 (en) * | 1991-04-29 | 1994-10-05 | Olin Corp | Process for purifying and end-capping polyols made using double metal cyanide catalysts |
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