The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 2004
Filed:
Apr. 16, 1998
Applicant:
Inventors:
Harry E. Buckholtz, Lewiston, NY (US);
Mohamed W. Hisham, Grand Island, NY (US);
Assignee:
Occicdental Chemical Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 2/510 ;
U.S. Cl.
CPC ...
C01B 2/510 ;
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° C. The phosphorous trichloride or phosphorous tribromide product can be reacted with oxygen to form phosphorous oxychloride or phosphorous oxybromide, respectively.