Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 22, 2009
Patent Application Number
11016663
Date Filed
December 17, 2004
Patent Primary Examiner
Patent abstract
The invention relates to a process for preparation of salts of dialkylphosphinic acids, which comprisesa) reacting hypophosphorous acid and/or its salts with olefins in the presence of a free-radical initiator to give dialkylphosphinic acids and/or their alkali metal salts, in a solvent system, andb) reacting the dialkylphosphinic acids and/or alkali metal dialkylphosphinates obtained in a) with compounds of the metals Mg, Ca, Al, Zn, Ti, Sn, Zr, and/or Fe to give the dialkylphosphinic salts of these metals.
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