| abstract |
The invention provides anticorrosive flame retardant formulations for thermoplastic polymers, comprising from 20 to 97.9% by weight of a (di)phosphinic acid salt of formula (I) and/or (II) n n n n n n n n n n whereinn R 1 , R 2 are the same or different and denote H or C 1 -C 6 -alkyl, linear or branched, and/or aryl; R 3 denotes C 1 -C 10 -alkylene, linear or branched, C 6 -C 10 -arylene, C 6 -C 10 -alkylarylene or C 7 -C 20 -arylalkylene; M denotes Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Ce, Bi, Sr, Mn, Li, Na, K and/or a protonated nitrogen base; m denotes from 1 to 4; n denotes from 1 to 4; x denotes from 1 to 4,n nand as component B from 2 to 50% by weight of a phosphazene of the general formula (III) or (IV)n nn n n n n n n n n n whereinn R 4 and R 4′ are the same or different and represent C 1 -C 20 -alkyl, C 6 -C 30 -aryl, C 6 -C 30 -arylalkyl or C 6 -C 30 -alkyl substituted aryl, and X represents a group —N═P(OPh) 3 or —N═P(O)OPh and Y represents the group —P(OPh) 4 or —P(O)(OPh) 2 ;n nas component C from 0.1 to 30% by weight of an inorganic tin compound, andn nas component D from 0 to 50% by weight of a nitrogen-containing flame retardant. |