VERFAHREN ZUR HERSTELLUNG VON SALZEN DER DIALKYLPHOSPHINSÄUREN

The invention relates to a process for preparing salts of dialkylphosphinic acids, which comprisesa) reacting alkylphosphonous and/or hypo- phosphorous acid and/or alkali metal salts thereof with olefins in the presence of a free-radical initiator to give dialkylphosphinic acids and/or alkali metal...

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Hauptverfasser: WEFERLING, NORBERT, KOLBE, GUENTER POSTSTRASSE 33, SCHMITZ, HANS-PETER
Format: Patent
Sprache:ger
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Zusammenfassung:The invention relates to a process for preparing salts of dialkylphosphinic acids, which comprisesa) reacting alkylphosphonous and/or hypo- phosphorous acid and/or alkali metal salts thereof with olefins in the presence of a free-radical initiator to give dialkylphosphinic acids and/or alkali metal salts thereof andb) reacting the dialkylphosphinic acids and/or alkali metal salts thereof obtained according to a) with metal compounds of Mg, Ca, Al, Sb, Sn, Ge, Ti, Zn, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na and/or K to give the metal dialkyl20 phosphinate salts.