PET Polymer with Improved Properties

A polyester comprising:

• i) a carboxylic acid component comprising at least 90 mol % terephthalic acid residues and from 0 to 10 mol % of carboxylic acid comonomer residues;
• ii) a hydroxyl component comprising from 90 to 95 mol % ethylene glycol residues and additional hydroxyl residues in an amount from 5 to 10 mol %;
• wherein the additional hydroxyl residues are chosen from a) diethylene glycol residues and b) mixtures of diethylene glycol residues and hydroxyl comonomer residues;
• based on 100 mol % of carboxylic acid component residues and 100 mol % of hydroxyl component residues in the polyester;
• wherein at least one of the carboxylic acid and hydroxyl components comprises comonomer residues, the molar ratio of the total comonomer residues to diethylene glycol residues being 1.3:1.0 or greater;
• and
• wherein the polyester comprises less than 2.3 mol % of diethylene glycol and has an intrinsic viscosity greater than 0.40 dL/g and less than 0.80 dL/g