| 摘要 |
Provided is a polyethylene naphthalenedicarboxylate resin composition having excellent transparency and hue, and containing a cobalt compound as a color-controlling agent, wherein the polyethylene naphthalenedicarboxylate resin composition comprises a polyethylene naphthalenedicarboxylate, an antimony compound, a cobalt compound and a phosphorous compound which is expressed by a specific structural formula and has an acid dissociation constant pKa of 1.0 or more, and the polyethylene naphthalenedicarboxylate resin composition is produced by using an antimony compound as a polycondensation catalyst.
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