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Method of preparing pentachlorodisilane purified reaction product comprising same

a technology of pentachlorodisilane and reaction product, which is applied in the field of preparing pentachlorodisilane, can solve the problems of difficult to synthesize pentachlorodisilane, difficult to otherwise obtain, and high cost of other sources, and achieves significant energy and/or expensive starting reagents

Pending Publication Date: 2022-09-15
JIANGSU NATA OPTO ELECTRONICS MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]The invention has technical and non-technical advantages. One of the problems solved by the processes is providing, relative to conventional processes, improved processes of making the pentachlorodisilane. For example, the inventive method typically prepares pentachlorodisilane in higher purity, higher yield, greater selectivity, or a combination of any two or more thereof, than conventional processes. Moreover, the inventive method can be scaled up for high volume production of pentachlorodisilane at low cost, particularly as compared to conventional processes.

Problems solved by technology

However, pentachlorodisilane is difficult to synthesize and expensive to otherwise obtain.
However, such techniques require significant energy and / or expensive starting reagents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

on of Pentachlorodisilane

[0054]Partial Reduction of Hexachlorodisilane: Hexachlorodisilane (3.48 kg; 12.9 mol) is loaded into a 12 L jacketed reactor and then heated to and held at a temperature of 80° C. The contents of the reactor is then maintained at a temperature between 80-90° C. and agitated while a metal hydride compound (DIBAH; 1.48 kg; 10.4 mol) is added over a period of 2 hours to give a reaction mixture. The reaction mixture is agitated for 30 minutes in the reactor and then distilled through a 5-tray column under vacuum to give a reaction product comprising pentachlorodisilane (PCDS) (˜3.2 kg; 16% PCDS via GC-TCD integrations), which is then condensed through a cooled condenser (5° C.) and collected in a 3 L receiving flask. The reaction product is then fractionally distilled under vacuum (down to 10 Torr) at 80° C. pot temperature through a 20-tray column to give a crude reaction product comprising pentachlorodisilane (PCDS) (494 g; 46% PCDS via GC-TCD integrations).

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Abstract

A method of preparing pentachlorodisilane is disclosed. The method comprises partially reducing hexachlorodisilane with a metal hydride compound to give a reaction product comprising pentachlorodisilane. The method further comprises purifying the reaction product to give a purified reaction product comprising the pentachlorodisilane. The purified reaction product comprising pentachlorodisilane formed in accordance with the method is also disclosed.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to and all advantages of U.S. Provisional Application No. 62 / 538,858, filed on 31 Jul. 2017, the content of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention generally relates to a method of preparing pentachlorodisilane and, more specifically, to a method of preparing a purified reaction product comprising pentachlorodisilane with excellent yield and conversion and to the purified reaction produced formed thereby.DESCRIPTION OF THE RELATED ART[0003]Silane compounds are known in the art and utilized in diverse end use applications. For example, silane compounds may be utilized to prepare organopolysiloxanes, e.g. silicone polymers or resins. Alternatively, silane compounds are ubiquitously utilized in the electronics industry. For example, silane compounds are utilized to form thin films via deposition (e.g. chemical vapor deposition, atomic layer deposition, etc.)...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C01B33/107B01D3/14
CPCC01B33/10778B01D3/14B01D3/00C01B33/107
Inventor KETOLA, BARRYMOWER CHANG, NOELYOUNG, JEANETTEZHOU, XIAOBING
Owner JIANGSU NATA OPTO ELECTRONICS MATERIALS CO LTD
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