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Process for the production of chlorinated propanes

A technology for tetrachloropropane and pentachloropropane, applied in the field of producing chlorinated propane, can solve the problems of suboptimal commercial application, difficult processing conditions of pentachloropropane, etc., and achieve the effects of cost saving, time saving, and mild reaction conditions

Inactive Publication Date: 2015-10-28
BLUE CUBE IP
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Problems solved by technology

[0005] Unfortunately, these pentachloropropanes have proven difficult to manufacture using acceptable processing conditions and in commercially acceptable regioselectivities and yields
For example, conventional methods for producing 1,1,1,2,3-pentachloropropane (such as those disclosed in U.S. Patent No. 8,115,038) can provide acceptable Isomer selectivity, but only after prolonged reaction times, potentially rendering this method suboptimal for commercial applications

Method used

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  • Process for the production of chlorinated propanes
  • Process for the production of chlorinated propanes
  • Process for the production of chlorinated propanes

Examples

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example I

[0043] Example I: Using AlCl 3 to FeCl 3 Chlorination of 1,1,1,3-tetrachloropropane

[0044] In the glove box, 100mg FeCl 3 or AlCl 3 and dichloromethane (45 mL) were charged to the bottom of a 100 mL Parr reactor. Seal the reactor, start stirring (900 rev / min), use N 2 (~140 psig) The reactor was pressurized and vented. Make chlorine gas (30% in N 2 Middle) was passed through the reactor for 35 minutes at a reactor pressure of 125 psig. 1,1,1,3-Tetrachloropropane (1 mL) and dichloromethane (9 mL) were charged to the addition pot. The chlorine gas was then stopped, the reactor was heated to 50°C and the reactor pressure was adjusted to ~125 psig. Addition tanks were added and the reactor was sampled every two minutes for 10 minutes, followed by samples at 30 and 60 minutes. The sample was removed from the box and quenched with saturated aqueous sodium bicarbonate. Separate the organic layer. by deuterated chloroform 1 H NMR spectral analysis indicated that for AlCl...

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Abstract

Processes for the production of chlorinated propanes are provided. The processes comprise catalyzing the chlorination of 1,1,1,3-tetrachloropropane with aluminum chloride, either alone or in combination with ferric chloride. Low intensity conditions are appropriate for the process, e.g., temperatures of from ambient to 100°C and pressures of from ambient to 200 psig may be used. Even though low intensity conditions are used, the aluminum chloride provides at least 1.5 times greater the conversion rate and / or productivity of 1,1,1,3-tetrachloropropane as compared to ferric chloride when used as a single catalyst under similar processing conditions.

Description

technical field [0001] The present invention relates to a process for the production of chlorinated propanes. Background technique [0002] Hydrofluorocarbon (HFC) products are widely used in many applications including refrigeration, air conditioning, foam expansion, and as propellants in aerosol products, including medical aerosol devices. Although HFCs have been shown to be more climate friendly than the chlorofluorocarbon and hydrochlorofluorocarbon products they replace, they have now been found to exhibit a considerable global warming potential (GWP). [0003] The search for more acceptable alternatives to current fluorocarbon products has led to the emergence of hydrofluoroolefin (HFO) products. HFOs are expected to exert less impact on the atmosphere relative to their predecessors in the form of little or no deleterious impact on the ozone layer and their lower GWP compared to HFCs. Advantageously, HFOs also exhibit low flammability and low toxicity. [0004] As H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C17/10C07C19/01C07C17/275C07C21/04
CPCC07C17/275C07C17/10C07C17/25C07C19/01C07C21/04
Inventor M·M·特尔陶维德乔乔D·S·莱塔尔
Owner BLUE CUBE IP
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