GB1056522A - Manufacture of chlorinated ethanes - Google Patents
Manufacture of chlorinated ethanesInfo
- Publication number
- GB1056522A GB1056522A GB543664A GB543664A GB1056522A GB 1056522 A GB1056522 A GB 1056522A GB 543664 A GB543664 A GB 543664A GB 543664 A GB543664 A GB 543664A GB 1056522 A GB1056522 A GB 1056522A
- Authority
- GB
- United Kingdom
- Prior art keywords
- column
- dichloroethane
- trichloroethane
- chlorine
- ethylene
- 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
- C07C17/013—Preparation of halogenated hydrocarbons by addition of halogens
- C07C17/02—Preparation of halogenated hydrocarbons by addition of halogens to unsaturated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/093—Preparation of halogenated hydrocarbons by replacement by halogens
- C07C17/10—Preparation of halogenated hydrocarbons by replacement by halogens of hydrogen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,056,522. Chlorinated ethanes. IMPERIAL CHEMICAL INDUSTRIES Ltd. March 31, 1964 [Feb. 10, 1964], No. 5436/64. Heading C2C. Tetrachloroethanes and / or 1,1,2 - trichloroethane, in any desired proportion, are produced by establishing an equilibrium in a continuous system comprising a packed reaction column surmounted by a reflux condenser by (1) feeding ethylene into the base of the column and chlorine into the column between the ethylene feed point and the head of the column in the absence of light; (2) passing down the column a recycle liquor consisting of (i) 1,2-dichloroethane alone when 1,1,2-trichloroethane is required as product; or (ii) 1,2-dichloroethane and 1,1,2-trichloroethane when tetrachloroethanes are required as or in the product; the whole of the 1,2-dichloroethane in the products leaving the base of the column being recovered and recycled to the reaction column, and, in case (ii) above, a part or the whole of the 1,1,2-trichloroethane being similarly recovered and recycled; (3) maintaining the column at, at least 50‹ C. but not above the boiling point of the liquor fed in at the head of the column; (4) feeding into the head of the column additional 1,2-dichloroethane from a source outside the system, so that this, together with recycled liquor, gives a combined recycle liquor containing at least 5 mole per cent of 1,2-dichloroethane; (5) utilizing chlorine, in the presence of absence of oxygen, and such molar ratios of chlorine to ethylene that there is a net loss of 1,2-dichloroethane made in the system thus necessitating addition of 1,2 - dichloroethane from an external source, and so that 1 mole of 1,1,2-trichloroethane and/or tetrachloroethanes is produced per total of 1 mole of ethylene and 1,2-dichloroethane reacted; (6) withdrawing HCI from the condenser surmounting the column; and (7) recovering from the liquor leaving the base of the reaction column that portion of chlorinated ethanes which is not recycled to the reaction column and which is the desired product. To obtain a product consisting essentially of tetrachloroethanes when using chlorine free from oxygen the proportion of 1,2-dichloroethane in the combined recycle liquor should be greater than 20 mole per cent, e.g. 21À5 mole per cent, the remainder being 1,1,2-trichloroethane, with a molar ratio of chlorine to ethylene of 3-7 : 1. As the proportion of 1,2-dichloroethane in the combined recycle liquor is increased, the proportion of 1,1,2-trichloroethane in the product increases and may be obtained at any desired level accordingly. Unreacted ethylene may be recovered and re-used, or chlorinated or oxychlorinated, using, e.g. the HCl produced, to form 1,2- dichloroethane which may be fed to the column. If chlorine containing oxygen is used in the process of the invention, the ratios given above are adjusted.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB543664A GB1056522A (en) | 1964-03-31 | 1964-03-31 | Manufacture of chlorinated ethanes |
SE470264A SE308712B (en) | 1964-03-31 | 1964-04-16 | |
FR971364A FR1395983A (en) | 1964-03-31 | 1964-04-17 | Manufacturing process of tetrachloroethanes and 1, 1, 2-trichloroethane |
DE19641468101 DE1468101A1 (en) | 1964-03-31 | 1964-04-17 | Production of chlorinated hydrocarbons |
NL6404193A NL6404193A (en) | 1964-03-31 | 1964-04-17 | |
ES298821A ES298821A1 (en) | 1964-03-31 | 1964-04-17 | Procedure for the production of chlorine hydrocarbons (Machine-translation by Google Translate, not legally binding) |
CH497564A CH457382A (en) | 1964-03-31 | 1964-04-17 | Process for the production of tetrachloroethanes and / or 1,1,2-trichloroethane |
BE646736A BE646736A (en) | 1964-03-31 | 1964-04-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB543664A GB1056522A (en) | 1964-03-31 | 1964-03-31 | Manufacture of chlorinated ethanes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1056522A true GB1056522A (en) | 1967-01-25 |
Family
ID=9796174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB543664A Expired GB1056522A (en) | 1964-03-31 | 1964-03-31 | Manufacture of chlorinated ethanes |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE646736A (en) |
CH (1) | CH457382A (en) |
DE (1) | DE1468101A1 (en) |
ES (1) | ES298821A1 (en) |
GB (1) | GB1056522A (en) |
NL (1) | NL6404193A (en) |
SE (1) | SE308712B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4873384A (en) * | 1985-02-19 | 1989-10-10 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Method for producing dichloroethane |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385666A1 (en) * | 1977-03-30 | 1978-10-27 | Diamond Shamrock Corp | Halogenating aliphatic hydrocarbon(s) esp. ethylene - by first stage oxyhalogenation then vapour phase halogenation |
DE3137513A1 (en) * | 1981-09-21 | 1983-04-07 | Hoechst Ag, 6230 Frankfurt | METHOD FOR PRODUCING 1,2-DICHLORETHANE |
-
1964
- 1964-03-31 GB GB543664A patent/GB1056522A/en not_active Expired
- 1964-04-16 SE SE470264A patent/SE308712B/xx unknown
- 1964-04-17 ES ES298821A patent/ES298821A1/en not_active Expired
- 1964-04-17 NL NL6404193A patent/NL6404193A/xx unknown
- 1964-04-17 DE DE19641468101 patent/DE1468101A1/en active Pending
- 1964-04-17 CH CH497564A patent/CH457382A/en unknown
- 1964-04-17 BE BE646736A patent/BE646736A/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4873384A (en) * | 1985-02-19 | 1989-10-10 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Method for producing dichloroethane |
Also Published As
Publication number | Publication date |
---|---|
CH457382A (en) | 1968-06-15 |
DE1468101A1 (en) | 1968-01-02 |
SE308712B (en) | 1969-02-24 |
NL6404193A (en) | 1965-08-11 |
ES298821A1 (en) | 1964-10-16 |
BE646736A (en) | 1964-10-19 |
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