| abstract |
The present invention relates to additive mixtures for plastics containing a phosphinic acid salt of formula (I) as component A wherein R 1 and R 2 are ethyl, M is Al, Fe, TiO p or Zn m is 2 to <4, preferably 2 or 3, and p = (4 - m) / 2; a compound selected from the group of Al, Fe, TiO p or Zn salts of ethylbutylphosphinic acid, dibutylphosphinic acid, ethylhexylphosphinic acid, butylhexylphosphinic acid and / or dihexylphosphinic acid as component B; a phosphinic acid salt of formula (II) as component C wherein R 3 is ethyl, Met is Al, Fe, TiOq or Zn, n is 2 to 3, and q = (4 - n) / 2; and antimony, tin and / or indium as constituent D. Polymeric compositions containing these additive mixtures are characterized by excellent flame retardancy and very good laser marking ability or laser welding. |