Process for making phosphorus halides and oxyhalides
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United States of America Patent
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Feb 3, 2004
Grant Date -
N/A
app pub date -
Apr 16, 1998
filing date -
Apr 16, 1998
priority date (Note) -
Expired
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Abstract
Disclosed is a process for producing phosphorous trichloride, phosphorous pentachloride, or phosphorous tribromide by reacting phosphine gas with chlorine gas or bromine gas, in a mixture with hydrogen gas. The phosphine is dried and the reaction is performed at a temperature up to about 250.degree. C. The phosphorous trichloride or phosphorous tribromide product can be reacted with oxygen to form phosphorous oxychloride or phosphorous oxybromide, respectively.
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