GB741870A - An improved method for the production of chlorine-containing polyether polyepoxides - Google Patents
An improved method for the production of chlorine-containing polyether polyepoxidesInfo
- Publication number
- GB741870A GB741870A GB28286/52A GB2828652A GB741870A GB 741870 A GB741870 A GB 741870A GB 28286/52 A GB28286/52 A GB 28286/52A GB 2828652 A GB2828652 A GB 2828652A GB 741870 A GB741870 A GB 741870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polychlorhydrin
- caustic soda
- ethers
- reacting
- containing polyether
- 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
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/12—Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms
- C07D303/18—Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms by etherified hydroxyl radicals
- C07D303/20—Ethers with hydroxy compounds containing no oxirane rings
- C07D303/24—Ethers with hydroxy compounds containing no oxirane rings with polyhydroxy compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
Abstract
Chlorine-containing polyether polyepoxides are made by reacting polychlorhydrin ethers of polyhydric alcohols in acetone solution with solid caustic soda in amount corresponding to about 65-85 per cent of that equivalent to the total chlorine content of the polychlorhydrin. The polychlorhydrin ethers may be made by reacting epichlorhydrin with polyhydric alcohols and a preferred starting material is made by reacting 3 mols. of the chlorhydrin with 1 mol. of glycerol. Only about two thirds of the total chlorine content of the polychlorhydrin ethers is in an "active" form to react with caustic soda to produce epoxides i.e. is on a carbon atom adjacent to a hydroxyl group, and preferably just this equivalent amount of alkali is used. At the end of the process excess caustic soda is advantageously neutralized by the addition of an acid such as hydrochloric acid before solvent removal. In an example caustic soda is added in portions to an acetone solution of the preferred starting material so as to maintain a temperature of 47-60 DEG C. the product finally being heated at 50-60 DEG C. for a short time before isolation. Specification 679,536 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US741870XA | 1952-02-19 | 1952-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB741870A true GB741870A (en) | 1955-12-14 |
Family
ID=22118195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28286/52A Expired GB741870A (en) | 1952-02-19 | 1952-11-10 | An improved method for the production of chlorine-containing polyether polyepoxides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB741870A (en) |
-
1952
- 1952-11-10 GB GB28286/52A patent/GB741870A/en not_active Expired
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