Process for removing metal species in the presence of hydrogen and a porous material and polyester polymer containing reduced amounts of metal species

摘要

Provided is a composition with partially aromatic polyester polymers having an It.V. of at least 0.50 dL/g, produced in an ester exchange melt phase process, having from zero or greater than zero to less than 5 ppm titanium, from zero or greater than zero to less then 10 ppm germanium, and from zero or greater than zero to less than 20 ppm manganese.

主权项

1. A polyester composition, consisting of:
a partially aromatic polyester polymer comprising a repeating unit of alkylene terephthalate or alkylene naphthalate, having an It.V. of at least 0.50 dL/g produced in an ester exchange melt phase process; from 2.5 to 40 ppm cobalt; about 0 ppm titanium; less than 10 ppm germanium; and less than 10 ppm manganese.