Flame-proof polyester molding compositions comprising ZnS

A molding composition comprising

• A) one or more members selected from the group consisting of polyester, polycarbonate and polyestercarbonate,
• B) 10 to 40% relative to the weight of the composition of a flame retardant component containing a nitrogen compound B.1) and a phosphorus compound B.2) of formula (I)
• wherein
• R1 to R20, independently of each other, denote hydrogen or a linear or branched C1-6-alkyl group,
• n denotes an average value of 0.5 to 50, and
• B denotes a C1-C12 alkyl or a halogen,
• q independently one of the other represent 0, 1 or 2,
• X denotes a single bond, C═O, S, O, SO2, C(CH3)2, a C1-C5 alkylene, a C2-C5 alkylidene, a C5-C6 cycloalkylidene or a
• C6-C12 arylene, or a radical corresponding to formulae (II) or (III)
• wherein
• Y denotes carbon and
• R21 and R22, independently one of the other denote hydrogen or a C1-C6 alkyl and which may be selected individually for each Y,
• m denotes an integer from 4 to 7 with the proviso that R21 and R22 simultaneously denote alkyl on at least one Y atom,
• C) 0.01 to 5% relative to the weight of the composition, of zinc sulphide,
• D) 0.3 to 40% relative to the weight of the composition of polyolefin wax,
• E) 0 to 50% relative to the weight of the composition of one or more fillers and/or reinforcing agents,
• wherein the sum of the proportions of the components totals 100% by weight.