GB877269A - Improvements in and relating to the preparation of polyoxyalkylene compounds - Google Patents
Improvements in and relating to the preparation of polyoxyalkylene compoundsInfo
- Publication number
- GB877269A GB877269A GB3821157A GB3821157A GB877269A GB 877269 A GB877269 A GB 877269A GB 3821157 A GB3821157 A GB 3821157A GB 3821157 A GB3821157 A GB 3821157A GB 877269 A GB877269 A GB 877269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- treated
- clays
- oxides
- fuller
- clay
- 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
- 150000001875 compounds Chemical class 0.000 title 1
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
- C08G65/32—Polymers modified by chemical after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyethers (AREA)
Abstract
Polyoxyalkylene compounds prepared by treating in presence of an alkaline catalyst a compound with at least one hydroxyl, carboxyl, mercapto, or amino group with one or more alkylene oxides are purified by contacting the reaction product before neutralization of the catalyst with an acid treated absorbent earth or clay and recovering the purified product therefrom. The clay is used in an amount that is 50%-100% in excess of that required to neutralize the alkali catalyst. The clay is preferably fuller's earth treated with H2SO4 or H3PO4. Ethylene, propylene and butylene oxides are specified and may be used in admixture or alternately to give polyoxyalkylene compounds in which the alkylene oxide units are randomly distributed or attached in blocks in the polymer chain. Crystalline or amorphous clays may be used, the crystalline variety being preferred. Clays specified are kaolinite, nacrite, halloysite, montmorrilonite, vermiculite, hectorite, nontronite, illite; micaceous clays, e.g. chlorites and the palygorskite group of clays, e.g. attapulgite. These clays are commonly known as fuller's earths, bentonites and zeolites. A number of suitable materials to which the alkylene oxides may be added are mentioned. Block copolymers prepared as in Specification 38019/57 may be treated. In Examples (1) ethylene and propylene oxides were added alternately to the monobutylether of ethylene glycol dissolved in potassium hydroxide. The polymer was free from excess alkylene oxide and treated with 4% by weight of a fuller's earth which has been treated with sulphuric acid, and the mixture then filtered. A product having an ash content of less than 0,001% was obtained. Examples (2)-(6) are similar. In Example (7) alternate additions of propylene and ethylene oxides were made to polyethylene glycol (average mol wt. 400) in presence of alkali. The product was treated with acid-treated fuller's earth and the clay then recured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3821157A GB877269A (en) | 1957-12-09 | 1957-12-09 | Improvements in and relating to the preparation of polyoxyalkylene compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3821157A GB877269A (en) | 1957-12-09 | 1957-12-09 | Improvements in and relating to the preparation of polyoxyalkylene compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB877269A true GB877269A (en) | 1961-09-13 |
Family
ID=10401973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3821157A Expired GB877269A (en) | 1957-12-09 | 1957-12-09 | Improvements in and relating to the preparation of polyoxyalkylene compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB877269A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5396098A (en) * | 1977-02-01 | 1978-08-22 | Asahi Denka Kogyo Kk | Purification of polyether |
| JPS53123499A (en) * | 1977-04-05 | 1978-10-27 | Asahi Denka Kogyo Kk | Purification of polyether |
| EP0059368A1 (en) * | 1981-02-27 | 1982-09-08 | BASF Aktiengesellschaft | Process for the purifacation of polytetramethylene-ether glycols |
| WO1998031724A1 (en) * | 1997-01-17 | 1998-07-23 | Shinwha Petrochemical Co., Ltd. | Process for production of polytetramethylene-ether-glycol-diester using halloysite catalyst |
| US10808076B2 (en) | 2017-03-23 | 2020-10-20 | The Dallas Group Of America, Inc. | Purification of crude polyalkylene oxide polymers with acid functionalized silicas and metal silicates |
-
1957
- 1957-12-09 GB GB3821157A patent/GB877269A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5396098A (en) * | 1977-02-01 | 1978-08-22 | Asahi Denka Kogyo Kk | Purification of polyether |
| JPS53123499A (en) * | 1977-04-05 | 1978-10-27 | Asahi Denka Kogyo Kk | Purification of polyether |
| EP0059368A1 (en) * | 1981-02-27 | 1982-09-08 | BASF Aktiengesellschaft | Process for the purifacation of polytetramethylene-ether glycols |
| US4460796A (en) * | 1981-02-27 | 1984-07-17 | Basf Aktiengesellschaft | Purification of polytetramethylene ether-glycols |
| WO1998031724A1 (en) * | 1997-01-17 | 1998-07-23 | Shinwha Petrochemical Co., Ltd. | Process for production of polytetramethylene-ether-glycol-diester using halloysite catalyst |
| US6207793B1 (en) | 1997-01-17 | 2001-03-27 | Korea Ptg Co., Ltd. | Process for production of polytetramethylene-ether-glycol-diester using halloysite catalyst |
| US10808076B2 (en) | 2017-03-23 | 2020-10-20 | The Dallas Group Of America, Inc. | Purification of crude polyalkylene oxide polymers with acid functionalized silicas and metal silicates |
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