Patent ID: 8524343

Claim:
A polyethylene terephthalate resin, comprising: polyethylene terephthalate polymers including between about 5 and 8 mole percent comonomer substitution; branching agent in an amount greater than zero and less than about 0.08 percent mole-equivalent branches per mole of standardized polymer, the standardized polymer being unmodified polyethylene terephthalate; between about 2 and 50 ppm of elemental titanium; more than about 10 ppm of elemental cobalt; at least one heat-up rate additive selected from the group consisting of carbon black, activated carbon and graphite; less than about 100 ppm of elemental antimony, if any; and more than about 5 ppm of elemental phosphorus; and wherein the polyethylene terephthalate resin has an L* value of more than about 65 as classified in the CIE L*a*b* color space.