POLYESTER HIGHLY CONTAINING MANGANESE COMPOUND, MANUFACTURING PROCESS OF POLYTRIMETHYLENE TEREPHTHALATE COMPOSITION, AND FIBER WITH IMPROVED LIGHT RESISTANCE

摘要

PROBLEM TO BE SOLVED: To provide a polyester highly containing a manganese compound which is necessary to manufacture a polytrimethlene terephthalate polyester fiber having an improved light resistance.;SOLUTION: The polyester highly containing a manganese compound contains a manganese compound in the amount of 150 ppm or more and 10,000 ppm or less in terms of manganese. And the ratio of the contained manganese to phosphorus falls within the range as specified in the formula: (1) 0≤P/Mn≤1 (wherein, P is a mole equivalent of phosphorus, and Mn is a mole equivalent of manganese).;COPYRIGHT: (C)2003,JPO