GB1467970A - Purification of polyethers - Google Patents
Purification of polyethersInfo
- Publication number
- GB1467970A GB1467970A GB2483974A GB2483974A GB1467970A GB 1467970 A GB1467970 A GB 1467970A GB 2483974 A GB2483974 A GB 2483974A GB 2483974 A GB2483974 A GB 2483974A GB 1467970 A GB1467970 A GB 1467970A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polyethers
- treatment
- purification
- ethylene oxide
- mixture
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
Abstract
1467970 Purification of polyethers IMPERIAL CHEMICAL INDUSTRIES Ltd 2 May 1975 [5 June 1974] 24839/74 Heading C3R Polyethers, which are liquid reaction products obtained by sequential addition of ethylene oxide and at least one other alkylene oxide (e.g. propylene oxide) to an active hydrogen containing compound, are purified by treatment with a mixture containing 1 part by wt. of active carbon and 2À5-7À5 parts by wt. of synthetic magnesium silicate. From 0À5-15% by wt. of the mixture may be used, based on the weight of the polyether treated. Examples relate to the treatment of an ethylene oxide tipped oxypropylated glycerol (M.W. 5300, oxyethylene content 14%).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2483974A GB1467970A (en) | 1975-05-02 | 1975-05-02 | Purification of polyethers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2483974A GB1467970A (en) | 1975-05-02 | 1975-05-02 | Purification of polyethers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1467970A true GB1467970A (en) | 1977-03-23 |
Family
ID=10218062
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2483974A Expired GB1467970A (en) | 1975-05-02 | 1975-05-02 | Purification of polyethers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1467970A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0107080A1 (en) * | 1982-09-29 | 1984-05-02 | The B.F. GOODRICH Company | Decolorizing polymers of epihalohydrin |
EP0181621A2 (en) * | 1984-11-13 | 1986-05-21 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for purification of polyalkylene ether |
EP0283298A2 (en) * | 1987-03-20 | 1988-09-21 | ARCO Chemical Technology, L.P. | Purification of polyols prepared using double metal cyanide complex catalysts |
GB2246573A (en) * | 1990-08-01 | 1992-02-05 | Sandoz Ltd | Purified polylactides |
CN111763309A (en) * | 2020-07-22 | 2020-10-13 | 万华化学(烟台)容威聚氨酯有限公司 | Refining method for reducing aldehyde content and odor in polyether polyol |
-
1975
- 1975-05-02 GB GB2483974A patent/GB1467970A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0107080A1 (en) * | 1982-09-29 | 1984-05-02 | The B.F. GOODRICH Company | Decolorizing polymers of epihalohydrin |
EP0181621A2 (en) * | 1984-11-13 | 1986-05-21 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for purification of polyalkylene ether |
EP0181621A3 (en) * | 1984-11-13 | 1988-05-11 | Asahi Kasei Kogyo Kabushiki Kaisha | Process for purification of polyalkylene ether |
EP0283298A2 (en) * | 1987-03-20 | 1988-09-21 | ARCO Chemical Technology, L.P. | Purification of polyols prepared using double metal cyanide complex catalysts |
EP0283298A3 (en) * | 1987-03-20 | 1989-10-18 | Arco Chemical Technology Inc. | Purification of polyols prepared using double metal cyanide complex catalysts |
GB2246573A (en) * | 1990-08-01 | 1992-02-05 | Sandoz Ltd | Purified polylactides |
GB2246573B (en) * | 1990-08-01 | 1994-05-11 | Sandoz Ltd | Purified polylactides |
CN111763309A (en) * | 2020-07-22 | 2020-10-13 | 万华化学(烟台)容威聚氨酯有限公司 | Refining method for reducing aldehyde content and odor in polyether polyol |
CN111763309B (en) * | 2020-07-22 | 2023-01-13 | 万华化学(烟台)容威聚氨酯有限公司 | Refining method for reducing aldehyde content and odor in polyether polyol |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |