| 摘要 |
PURPOSE: Production process of polyester yarn is provided which figures out problems related to adding modified agent like trimelitic acid or its derivatives so that it keeps water-storage characteristics, good dyeing and strength. CONSTITUTION: The production process of polyester yarn with low shrinkage is characterized by adding 100-3000ppm of 1,2,4,5-benzene tetracarboxylic acid or 1,2,4,5-benzene tetracarboxylic dianhydride in a polymerization process of polyester to prepare polyester copolymer; and spinning polyester copolymer at 2,500-5,000m/per of taking speed in a general spinner. |
