公开(公告)号：US11091587B2

公开(公告)日：2021-08-17

申请号：US17042127

申请日：2019-10-28

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Shanshui Wang ,  Lili Wang ,  Jiangen Shen

IPC: C08K13/02 ,  C08G63/682 ,  C08G63/85 ,  C08K3/22 ,  C08K3/38 ,  C08K5/521 ,  C08K5/524 ,  D01F6/92

Abstract: A type of wool-like polyester filament and preparing method thereof are disclosed. The preparing method is manufacturing filament from a modified polyester through a POY process and a successive DTY processes, wherein the modified polyester is the product of the esterification and the successive polycondensation reactions of evenly mixed terephthalic acid, 1,4-butanediol, fluorinated dicarboxylic acid, tert-butyl branched hexanediol and 2,5,6,6-tetramethyl-2,5-heptanediol. The obtained fiber has a dye uptake of 90.32-93.27% and a K/S value of 22.15-23.42 when dyed at 100° C., and has an intrinsic viscosity drop of 17-20% when stored at 25° C. and R.H. 65% for 60 months. This invention features a method with ease of application and a product with good dyeing and degradation performance.

公开(公告)号：US10961641B2

公开(公告)日：2021-03-30

申请号：US17042957

申请日：2019-10-28

Applicant: JIANGSU HENGLI CHEMICAL FIBRE CO., LTD.

Inventor： Hongwei Fan ,  Lili Wang ,  Jiangen Shen

IPC: D01F6/92 ,  D01D5/253 ,  D01F1/10 ,  D01D5/088 ,  C08G63/695 ,  C08G63/46 ,  C08G63/86 ,  C08G63/183 ,  C08K5/524 ,  C08K5/521

Abstract: A type of feather-like polyester fiber and a preparing method thereof are disclosed. The preparing method is to manufacture filament from a modified polyester through a POY process with a four-fold flat spinneret and a successive DTY processes, wherein said modified polyester is the product of the esterification and the successive polycondensation reactions of evenly mixed terephthalic acid, ethylene glycol, main-chain silicated diol and fluorinated dicarboxylic acid, and the spinneret is the one set with four-fold flat shaped orifices. The obtained fiber has a dye uptake of 89.6-93.7% when dyed at 130° C., and has an intrinsic viscosity drop of 13-20% when stored at 25° C. and R.H. 65% for 60 months. This invention is simple to apply and features a product with good dyeing and degradation performance.