Production of metal salts of di:alkyl-phosphinic acids

摘要

Metal salts of dialkylphosphinic acids are obtained by reacting alkylphosphonous and/or hypophosphorous acids or their alkali salts with olefins in presence of radical initiators and then reacting the resulting dialkylphosphinic acids and/or alkali salts with compounds of 17 other listed metals, e.g. aluminum, iron, cerium etc.. A process for the production of dialkylphosphinic acid salts comprises: (a) reacting alkylphonous and/or hypophosphorous acids and/or their alkali salts with olefins in presence of a radical initiator; and (b) reacting the resulting dialkylphosphinic acids and/or their alkali salts with compounds of magnesium, calcium, aluminum, antimony, tin, germanium, titanium, zinc, iron, zirconium, cerium, bismuth, strontium, manganese, lithium, sodium and/or potassium to form the corresponding salts.