| 摘要 |
PROBLEM TO BE SOLVED: To provide a polytrimethylene terephthalate polymer having improved rigidity and low secondary shrinkage in molding while keeping the fluidity, thermal stability and appearance of the molded article. SOLUTION: The polytrimethylene terephthalate polymer has a weight- average molecular weight of 10,000-100,000 and contains 1-40% component having a molecular weight of 1,000-5,000. |
