Patent ID: 7932345

Claim:
A polyester polymer composition comprising: a polyester polymer comprising repeating units of ethylene terephthalate or ethylene naphthalate, aluminum atoms in an amount of at least 3 ppm based on the weight of the polyester polymer, and less than 5 ppm of catalytically active titanium atoms based on the weight of the polyester polymer, said polyester polymer having an It.V. of at least 0.72 dL/g obtained through a melt phase polymerization process and a particle residual acetaldehyde level of 10 ppm or less, wherein said aluminum atoms are residues of an aluminum compound represented by the formula: Al[OR] a [OR′] b [OR″] c [R′″] d wherein R, R′, R″ are independently an alkyl group, aryl group, acyl group or hydrogen, R′″ is an anionic group, and a, b, c, d are independently 0 or positive integers, and a+b+c+d is no greater than 3.