GB391156A - Improvements in or relating to the stabilisation of chlorinated hydrocarbons - Google Patents
Improvements in or relating to the stabilisation of chlorinated hydrocarbonsInfo
- Publication number
- GB391156A GB391156A GB2859631A GB2859631A GB391156A GB 391156 A GB391156 A GB 391156A GB 2859631 A GB2859631 A GB 2859631A GB 2859631 A GB2859631 A GB 2859631A GB 391156 A GB391156 A GB 391156A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chlorinated hydrocarbons
- mixture
- copper
- amine
- degreasing
- 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
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/42—Use of additives, e.g. for stabilisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Chlorinated hydrocarbons containing two carbon atoms are stabilized by adding a small proportion of an alkylamine which prevents the liberation of acid in degreasing metals and fabrics. Suitable alkylamines are dibutylamine and mono-, di- and tri-ethylamine. If the boiling-point of the amine is near to that of the chlorinated hydrocarbon, the mixture may be distilled with little change; such a mixture is trichlorethylene and triethylamine. A small quantity of an alkaline substance such as lime or hydrated lime may be added, which is capable of decomposing the hydrochloride of the added amine. Apparatus parts in permanent contact with chlorinated hydrocarbons should not be made of copper or its alloys, but the treated solvent may be used for degreasing copper or brass articles, as the contact is of relatively short duration. Specification 205,110, [Class 47 (ii), Fire-extinguishing &c.], is referred to.ALSO:Chlorinated hydrocarbons containing two carbon atoms are stabilized by adding a small proportion of an alkylamine which prevents the liberation of acid in degreasing metals and fabrics. Suitable alkylamines are dibutylamine and mono-, di- and tri-ethylamine. If the boiling-point of the amine is near to that of the chlorinated hydrocarbon, the mixture may be distilled with little change; such a mixture is trichlorethylene and triethylamine. A small quantity of an alkaline substance such as lime or hydrated lime may be added which is capable of decomposing the hydrochloride of the added amine. Apparatus parts in permanent contact with chlorinated hydrocarbons should not be made of copper or its alloys, but the treated solvent may be used for degreasing copper or brass articles, as the contact is of relatively short duration. Specification 205,110, [Class 47 (ii), Fire-extinguishing &c.], is referred to.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR744128D FR744128A (en) | 1931-10-14 | ||
| GB2859631A GB391156A (en) | 1931-10-14 | 1931-10-14 | Improvements in or relating to the stabilisation of chlorinated hydrocarbons |
| DEI44305D DE593384C (en) | 1931-10-14 | 1932-04-26 | Process for stabilizing liquid chlorinated hydrocarbons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2859631A GB391156A (en) | 1931-10-14 | 1931-10-14 | Improvements in or relating to the stabilisation of chlorinated hydrocarbons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB391156A true GB391156A (en) | 1933-04-18 |
Family
ID=10278103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2859631A Expired GB391156A (en) | 1931-10-14 | 1931-10-14 | Improvements in or relating to the stabilisation of chlorinated hydrocarbons |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE593384C (en) |
| FR (1) | FR744128A (en) |
| GB (1) | GB391156A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461852A (en) * | 1945-02-22 | 1949-02-15 | Merck & Co Inc | Stabilization of ddt |
| US2903488A (en) * | 1956-01-18 | 1959-09-08 | Diamond Alkali Co | Chemical method and composition |
| US2946826A (en) * | 1958-05-16 | 1960-07-26 | Canadian Ind | Stabilization of halohydrocarbons |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE943646C (en) * | 1951-10-26 | 1956-05-24 | Ethyl Corp | Process to prevent the discoloration of monocyclic hexachlorocyclohexane |
| DE1038035B (en) * | 1953-09-25 | 1958-09-04 | Diamond Alkali Co | Stabilization of technical tetrachlorethylene |
| US2958711A (en) * | 1954-07-26 | 1960-11-01 | Diamond Alkali Co | Stabilization of chlorinated hydrocarbons with carboxylic acid esters of acetylenic alcohols |
| NL96889C (en) * | 1954-07-26 | |||
| DE1215136B (en) * | 1961-10-12 | 1966-04-28 | Vulcan Materials Co | Stabilization of di-, tri- and tetrachloroethylene as well as other lower aliphatic chlorinated hydrocarbons and their mixtures |
-
0
- FR FR744128D patent/FR744128A/fr not_active Expired
-
1931
- 1931-10-14 GB GB2859631A patent/GB391156A/en not_active Expired
-
1932
- 1932-04-26 DE DEI44305D patent/DE593384C/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2461852A (en) * | 1945-02-22 | 1949-02-15 | Merck & Co Inc | Stabilization of ddt |
| US2903488A (en) * | 1956-01-18 | 1959-09-08 | Diamond Alkali Co | Chemical method and composition |
| US2946826A (en) * | 1958-05-16 | 1960-07-26 | Canadian Ind | Stabilization of halohydrocarbons |
Also Published As
| Publication number | Publication date |
|---|---|
| DE593384C (en) | 1934-02-26 |
| FR744128A (en) | 1933-04-12 |
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