公开(公告)号：US10815333B2

公开(公告)日：2020-10-27

申请号：US15744853

申请日：2016-06-12

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Wengang Li ,  Yanfang Wang ,  Lili Wang ,  Damao Yang ,  Fangming Tang ,  Lixin Yin ,  Guangkun Song

IPC: C08G63/183 ,  C08G63/83 ,  D01F6/62

Abstract: A high-modulus low-shrinkage polyester industrial yarn obtained by subjecting a polyester to dissolution, washing and solid state polycondensation followed by spinning. The high-modulus low-shrinkage polyester industrial yarn has a dry heat shrinkage rate of 2.0±0.25% under test conditions of 177° C.×10 min×0.05 cN/dtex. The average value of the crystal volume Vc of the high-modulus low-shrinkage polyester industrial yarn is larger than 230 nm3. The high-modulus low-shrinkage polyester industrial yarn has a fiber modulus of ≥100 cN/dtex. The polycondensation catalyst consists of magnesium ethylene glycol and antimony ethylene glycol, which has a small thermal degradation coefficient.