GB844104A - Improvements in or relating to the preparation of ethylene sulphite - Google Patents
Improvements in or relating to the preparation of ethylene sulphiteInfo
- Publication number
- GB844104A GB844104A GB1237958A GB1237958A GB844104A GB 844104 A GB844104 A GB 844104A GB 1237958 A GB1237958 A GB 1237958A GB 1237958 A GB1237958 A GB 1237958A GB 844104 A GB844104 A GB 844104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene
- adduct
- sulphite
- ethylene sulphite
- polymer
- 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
- C07D327/00—Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms
- C07D327/10—Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms two oxygen atoms and one sulfur atom, e.g. cyclic sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A polymer of ethylene sulphite <FORM:0844104/IV(a)/1> is prepared by maintaining ethylene oxide and sulphur dioxide or the adduct of formula C2H4O,SO2 in contact with an amine catalyst in a medium of ethylene sulphite. Preferably about equal weights of the ethylene sulphite and the sum of the weights of the reactants, or the adduct, are used at about atmospheric temperature. Some polymer is preferably present in the initial medium. The exothermic reaction may be controlled by immersing the reaction vessel in water which is allowed to warm up spontaneously as the reaction proceeds. The adduct which volatalises during both polymerization and depolymerization may be absorbed in ethylene sulphite and the mixture used in another run. Diethylaniline and pyridine are specified catalysts.ALSO:Ethylene sulphite <FORM:0844104/IV(b)/1> is prepared by maintaining ethylene oxide and sulphur dioxide or the adduct of formula C2H4O,SO2 in contact with an amine catalyst in a medium of ethylene sulphite to produce a polymer, thereafter heating the mixture to a temperature above 140 DEG C. to produce ethylene sulphite and separating the ethylene sulphite by distillation. Preferably about equal weights of the ethylene sulphite and the sum of the weights of the reactants, or the adduct, are used at about atmospheric temperature. Some polymer is preferably present in the initial medium. The exothermic reaction may be controlled by immersing the reaction vessel in water which is allowed to warm up spontaneously as the reaction proceeds. The adduct which volatalises during both polymerisation and depolymerisation may be absorbed in ethylene sulphite and the mixture used in another run. Diethylaniline and pyridine are specified catalysts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1237958A GB844104A (en) | 1958-04-18 | 1958-04-18 | Improvements in or relating to the preparation of ethylene sulphite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1237958A GB844104A (en) | 1958-04-18 | 1958-04-18 | Improvements in or relating to the preparation of ethylene sulphite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB844104A true GB844104A (en) | 1960-08-10 |
Family
ID=10003464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1237958A Expired GB844104A (en) | 1958-04-18 | 1958-04-18 | Improvements in or relating to the preparation of ethylene sulphite |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB844104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1188610B (en) * | 1961-07-27 | 1965-03-11 | Huels Chemische Werke Ag | Process for the preparation of monomeric cyclic sulfites of vicinal glycols with at least three carbon atoms |
| CN115772153A (en) * | 2022-11-21 | 2023-03-10 | 九江天赐高新材料有限公司 | Sulfuric acid ester and its preparation method |
-
1958
- 1958-04-18 GB GB1237958A patent/GB844104A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1188610B (en) * | 1961-07-27 | 1965-03-11 | Huels Chemische Werke Ag | Process for the preparation of monomeric cyclic sulfites of vicinal glycols with at least three carbon atoms |
| CN115772153A (en) * | 2022-11-21 | 2023-03-10 | 九江天赐高新材料有限公司 | Sulfuric acid ester and its preparation method |
| CN115772153B (en) * | 2022-11-21 | 2023-12-01 | 九江天赐高新材料有限公司 | Sulfate and preparation method thereof |
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