Copolyester of cyclohexanedimethanol and process for producing such polyester

Process for producing copolyester having repeat units from a dicarboxylic acid component comprising repeat units from at least 90 mol % terephthalic acid and a glycol component comprising repeat units from about 10-95 mol % 1,4-cyclohexanedimethanol and from about 90-5 mol % ethylene glycol comprising reacting said dicarboxylic acid component and said glycol component at temperatures sufficient to effect esterification or trans-esterification and polycondensing said reaction product under absolute pressure of less than 10 mm Hg for a time of more than about 2 to about 5 hours in the presence of a catalyst and inhibitor system consisting essentially of about 0-75 ppm Mn, about 25-100 ppm Zn, about 0.5-15 ppm Ti, about 5-80 ppm P, and 0 to about 60 ppm of an organic blue toning agent, all parts by weight based on the weight of the copolyester.