Patent ID: 6232493
Filing Date: 2001-05-15
Classification: C07F

Abstract:
A process for preparing metal salts of phenylalkylphosphinic acids having no halogen substituents, which comprisesa) reacting olefins having no halogen substituents with phenylphosphonous acids, alkali metal salts of the phenylphosphonous acids or a combination thereof in the presence of a free-radical initiator having an azo-group, andb) reacting the phenylalkylphosphinic acids, the alkali metal salts of the phenylalkylphosphinic acids or a combination thereof obtained by 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 phenylalkylphosphinate salts.