Thermoplastic polyester molding compositions

Claim 1

Polyester molding composition comprising a polymer selected from the group consisting of (a) polymers wherein at least about 97% by weight of the polymer contains the repeating ethylene terephthalate units of the formula: ##STR85## with the remainder being minor amounts of ester-forming components, and (b) copolymers of ethylene terephthalate wherein up to about 30 mole percent of the glycol is selected from one or more of diethylene glycol; propane-1,3-diol; butane-1,4-diol; polytetramethylene glycol; polyethylene glycol; polypropylene glycol and 1,4-hydroxymethylcyclohexane; and up to about 30 mole percent of the acid is selected from one or more of isophthalic; bibenzoic; naphthalene 1,4- or 2,6-dicarboxylic; adipic; sebacic; and decane-1,10-dicarboxylic acid, wherein said polymers contain a coloring amount of the copolymerized residue of one or more compounds of the formula ##STR86## wherein either ring C or D may contain in any position thereon one or more additional ##STR87## R 2 is --H or lower alkyl; n is 1 or 2; R 3 , R 4 and R 6 each is hydrogen or 1-3 substituents selected from lower alkyl; lower alkyl substituted with lower alkoxy, phenyl, Cl, Br, or lower alkanoylamino; lower alkoxy; lower alkoxy substituted with lower alkoxy, phenyl, Cl, Br, or lower alkanoylamino; chlorine; bromine; amino; lower alkylamino; lower alkylamino substituted with lower alkoxy, cyclohexyl, phenyl, Cl, Br, or lower alkanoylamino; arylamino; arylthio; aroylamino; wherein each aforesaid aryl moiety is 6-10 carbons; lower alkylsulfonyl; lower alkylthio; lower alkanoylamino; and cyclohexylamino; and wherein said polymers are admixed with from about 1 to about 300 ppm of iron oxide.