| http://www.w3.org/ns/prov#value | - A method of melt spinning high molecular weight polyester polymer to produce fibers with reduced carboxyl end group concentration comprising admixing and reacting with molten polyester polymer an effective amount of at least one lactim compound of the formula ##STR5## wherein n is an integer of 2 to 15;m is an integer of 1 to 4; R1 and R2 are independently hydrogen, halogen, nitro, amine, C1 -C10
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