Polyethylene terephthalate blends

Claim 1

A molding blend consisting essentially of (a) 20-90% by weight of blend of polyethylene terephthalate having an inherent viscosity of at least 0.4, (b) 0-50% by weight of blend of a reinforcing or filling material, (c) 1-12% by weight of blend of a sodium or potassium salt of a hydrocarbon carboxylic acid of 9-25 carbon atoms or a sodium or potassium salt of an ionic hydrocarbon copolymer of an α-olefin of 2-5 carbon atoms and an α,β-ethylenically unsaturated carboxylic acid of 3-5 carbon atoms in which the carboxyl groups have been at least partially neutralized with Na + or K + cations, provided the amount of copolymer present is sufficient to provide a ΔH H /ΔH c ratio of less than 0.25 to the blend, (d) 1-12% by weight of blend of a low molecular weight organic compound that is an ester, ketone, sulfone, sulfoxide, nitrile or amide of no more than 30 carbon atoms, provided the amount of the compound is sufficient to lower the Tpk of the blend by at least about 4° C., (e) a halogenated flame-retardant consisting of an aromatic organic compound having at least one aromatic ring in which the compound has sufficient halogen bonded directly to the aromatic ring carbons to provide flame-retardant properties, said flame-retardant present in said blend in an amount sufficient to provide an amount of halogen to the blend of between about 2 and 20% by weight based on weight of blend, (f) 0.5-10% by weight of blend of an antimonate of a metal of Groups I, II or VIII of the Periodic Table.