PELLET AUS POLYTRIMETHYLENTEREPHTHALAT UND HERSTELLUNGSVERFAHREN DAFÜR

摘要

The present invention provides a poly(trimethylene terephthalate) pellet comprising 80 wt% or more of trimethylene terephthalate repeating units copolymerized with bis (3-hydroxypropyl) ether at a ratio in a range from 0.01 to 2 wt%, wherein an amount of terminal carboxyl groups is 25 milli-equivalent/kg or less and an intrinsic viscosity is in a range from 0.8 to 2 dl/g, which pellet has an L* value of 75 or more, a b* value in a range from -2 to 5, and a weight in a range from 1 to 50 mg/piece.