| 摘要 |
PURPOSE:To obtain the title polyester fiber containing a carboxyl terminal group and diethylene glycol at a specific ratio, having specific intrinsic viscosity and strong elongation product, good dimensional stability and high toughness and capable of providing excellent uniformity and endurance to tire. CONSTITUTION:The aimed polyester fiber containing (A) <= 25 eq/ton carboxyl terminal group (COOH) and (B) <=1.3wt.% diethylene glycol(DEG) and preferably obtained by using (C) 30-150ppm antimony compound and 5-120ppm germanium compound as a polymerization catalyst and being >=0.85 in intrinsic viscosity(IV), <8% in middle elongation + dry heat shrinkage (S), >=2S+11 in strong elonga tion product (TE<1/2>) and <=40g/d in terminal modulus(TM). |
