ES2100120A1 - Discontinuous ion exchange process for the purification of crude polyether polyols - Google Patents
Discontinuous ion exchange process for the purification of crude polyether polyolsInfo
- Publication number
- ES2100120A1 ES2100120A1 ES09401514A ES9401514A ES2100120A1 ES 2100120 A1 ES2100120 A1 ES 2100120A1 ES 09401514 A ES09401514 A ES 09401514A ES 9401514 A ES9401514 A ES 9401514A ES 2100120 A1 ES2100120 A1 ES 2100120A1
- Authority
- ES
- Spain
- Prior art keywords
- purification
- ion exchange
- crude polyether
- polyether polyols
- exchange process
- 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
Links
Landscapes
- Polyethers (AREA)
Abstract
Discontinuous ion exchange process for the purification of crude polyether polyols. A process for the purification of crude polyether polyols accompanied by alkaline hydroxides used as catalysts in their manufacture, which comprises the following successive stages: a) Mixing the crude polyether polyol with a molecular weight of 1000-10,000 with water or an aqueous solution of a low molecular weight aliphatic alcohol and a strongly acidic ion exchange resin b) Heating the mixture of a) to 80-120 degree C with vigorous stirring c) Separating the phases of b) and treating these by conventional techniques in order to obtain the purified polyether polyol.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09401514A ES2100120B1 (en) | 1994-07-12 | 1994-07-12 | DISCONTINUOUS PROCEDURE OF ION EXCHANGE FOR THE PURIFICATION OF GROSS POLYOLET POLYOLS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES09401514A ES2100120B1 (en) | 1994-07-12 | 1994-07-12 | DISCONTINUOUS PROCEDURE OF ION EXCHANGE FOR THE PURIFICATION OF GROSS POLYOLET POLYOLS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2100120A1 true ES2100120A1 (en) | 1997-06-01 |
ES2100120B1 ES2100120B1 (en) | 1998-04-01 |
Family
ID=8286865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES09401514A Expired - Fee Related ES2100120B1 (en) | 1994-07-12 | 1994-07-12 | DISCONTINUOUS PROCEDURE OF ION EXCHANGE FOR THE PURIFICATION OF GROSS POLYOLET POLYOLS. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2100120B1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2135322A (en) * | 1983-01-21 | 1984-08-30 | Vyzk Ustav Petrochem | A process for purifying at least partially water-soluble polyethers and/or copolymers |
-
1994
- 1994-07-12 ES ES09401514A patent/ES2100120B1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2135322A (en) * | 1983-01-21 | 1984-08-30 | Vyzk Ustav Petrochem | A process for purifying at least partially water-soluble polyethers and/or copolymers |
Non-Patent Citations (1)
Title |
---|
DE LUCAS A. et al.: " Eliminación de metales alcalinos en polioles mediante intercambio iónico". Rev. R. Acad. Cienc. Exactas, Fis. y Nat. Madrid 1991. 85 (4), Pág. 619-25 * Todo el documento * * |
Also Published As
Publication number | Publication date |
---|---|
ES2100120B1 (en) | 1998-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19970601 Kind code of ref document: A1 Effective date: 19970601 |
|
FD1A | Patent lapsed |
Effective date: 20100315 |