GB469518A - Improvements in the manufacture of metal alkyl compounds - Google Patents
Improvements in the manufacture of metal alkyl compoundsInfo
- Publication number
- GB469518A GB469518A GB29630/35A GB2963035A GB469518A GB 469518 A GB469518 A GB 469518A GB 29630/35 A GB29630/35 A GB 29630/35A GB 2963035 A GB2963035 A GB 2963035A GB 469518 A GB469518 A GB 469518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pressure
- condenser
- autoclave
- alkyl halide
- temperature
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 229910052751 metal Inorganic materials 0.000 title abstract 2
- 239000002184 metal Substances 0.000 title abstract 2
- 125000000217 alkyl group Chemical group 0.000 title 1
- 150000001350 alkyl halides Chemical class 0.000 abstract 4
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 abstract 3
- 239000002826 coolant Substances 0.000 abstract 3
- 229960003750 ethyl chloride Drugs 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 229910000528 Na alloy Inorganic materials 0.000 abstract 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 239000003350 kerosene Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/24—Lead compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
<PICT:0469518/IV/1> In the preparation of lead and tin alkyls by interaction of an alloy of the metal with an alkyl halide at elevated temperature and pressure, the reaction mass is maintained at the desired temperature by condensing the vapours of alkyl halide evolved during the process and returning them from the reservoir in which they are collected to the reaction vessel at a controlled rate. The alkyl halide vapours may be condensed under controlled conditions, e.g. by varying the flow of cooling medium through the condenser by means of a pressure-operated valve responsive to the pressure in the system. The condenser tubes are preferably fitted with volume restrictors in order that the vapours may pass through at a velocity above that producing turbulence and thereby prevent any building-up of pressure by the non-condensible gases formed. The process may then be operated using an excess of only 50--100 per cent of alkyl halide. For the production of lead tetra-alkyl in the apparatus described in Fig. 1, lead mono-sodium alloy and some ethyl chloride vapour are placed in the autoclave 1, which is connected in a closed system with a condenser 2 and a reservoir 3. The reaction, which is exothermic, starts spontaneously and as the temperature rises, fresh ethyl chloride is allowed to flow by gravity from the reservoir into the autoclave, the rate of feed being indicated on the dial 17a. Ethyl chloride which vaporizes is condensed and returned via the condenser to the autoclave at a rate adjusted by the valve 6a to maintain the temperature at 60--70 DEG C. Automatic control of the pressure in the system is attained by the use of a pressure-type diaphragm-operated valve 12 which determines the amount of cooling medium, preferably kerosene, entering the condenser and leaving by pipe 13. Each condenser tube 9, Fig. 2, is provided with a tube 10, hanging therein from a cross-pin 11, which acts as a volume restrictor. To assist in the regulation of the temperature the autoclave is provided with a jacket 14 through which a cooling medium such as water can flow; when the pressure drops in the system, hot water is passed through the jacket to ensure completion of the reaction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US750322A US2091112A (en) | 1934-10-27 | 1934-10-27 | Process of making tetra-alkyl lead |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB469518A true GB469518A (en) | 1937-07-26 |
Family
ID=25017369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29630/35A Expired GB469518A (en) | 1934-10-27 | 1935-10-26 | Improvements in the manufacture of metal alkyl compounds |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2091112A (en) |
| DE (1) | DE694194C (en) |
| FR (1) | FR796791A (en) |
| GB (1) | GB469518A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2444270A (en) * | 1946-04-16 | 1948-06-29 | Gen Electric | Method of preparing organogermanium halides |
| US2449821A (en) * | 1945-12-08 | 1948-09-21 | Gen Electric | Method for preparing organosilicon compounds |
| US2852543A (en) * | 1954-10-14 | 1958-09-16 | Ethyl Corp | Process for the preparation of alkyl tin chlorides |
| US3080408A (en) * | 1958-10-02 | 1963-03-05 | Advance Production G M B H Deu | Preparation of dibenzyltin dichlorides |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2819281A (en) * | 1954-04-14 | 1958-01-07 | Ethyl Corp | Ethylation process |
| GB1440156A (en) * | 1974-08-22 | 1976-06-23 | Cincinnati Milacron Chem | Preparation of dimethyltin dichloride |
-
1934
- 1934-10-27 US US750322A patent/US2091112A/en not_active Expired - Lifetime
-
1935
- 1935-10-26 FR FR796791D patent/FR796791A/en not_active Expired
- 1935-10-26 GB GB29630/35A patent/GB469518A/en not_active Expired
- 1935-10-27 DE DE1935P0072027 patent/DE694194C/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2449821A (en) * | 1945-12-08 | 1948-09-21 | Gen Electric | Method for preparing organosilicon compounds |
| US2444270A (en) * | 1946-04-16 | 1948-06-29 | Gen Electric | Method of preparing organogermanium halides |
| US2852543A (en) * | 1954-10-14 | 1958-09-16 | Ethyl Corp | Process for the preparation of alkyl tin chlorides |
| US3080408A (en) * | 1958-10-02 | 1963-03-05 | Advance Production G M B H Deu | Preparation of dibenzyltin dichlorides |
Also Published As
| Publication number | Publication date |
|---|---|
| FR796791A (en) | 1936-04-15 |
| DE694194C (en) | 1940-07-30 |
| US2091112A (en) | 1937-08-24 |
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