Patents Represented by Attorney, Agent or Law Firm Ricahrd D. Fuerle
  • Process for making phosphorus halides and oxyhalides
    Patent number: 6685904
    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.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: February 3, 2004
    Assignee: Occicdental Chemical Corporation
    Inventors: Harry E. Buckholtz, Mohamed W. Hisham