Jiangsu Hengli Chemical Fibre Co., Ltd.

Xiaoyu Wang

Lili Wang

Fangming Tang

Shanshui Wang

Hongwei Fan

Chaoming Yang

Zangzang Niu

Yiwei Shao

Wengang Li

Qianhan Liu

Yanli Zhao

A high-strength thermal-stability polyester industrial yarn is prepared by spinning, winding and coordination treatment of a modified polyester after a solid-state polycondensation; wherein the method of coordination treatment comprises: soaking the wound fiber in an aqueous solution of a coordination agent, and the concentration of the aqueous solution of the coordination agent is 0.1-0.2 mol/L; wherein the condition of coordination treatment is 48-72 hours at 80-100° C., and the concentration of the aqueous solution of the coordination agent is 0.1-0.2 mol/L; wherein the polyester segments of the prepared high-strength thermal-stability polyester industrial yarn comprises a terephthalic acid segment, an ethylene glycol segment and a 2,6-pyridinedicarboxylic acid segment, and 2,6-pyridinedicarboxylic acid segments of different polyester segments are coordinated by Fe, the molar ratio of the terephthalic acid segment to the 2,6-pyridinedicarboxylic acid segment is 1:(0.03-0.05).

High-strength thermal-stability polyester industrial yarn and preparation method thereof

A type of cationic dyeable polyester fiber and preparing method thereof are disclosed. The preparing method is to manufacture a fiber from a cationic modified polyester through a fully drawn yarn (FDY) process, wherein the cationic modified polyester is composed of terephthalic acid segments, ethylene glycol segments, sodium salt of diethylene ester of 5-sulfoisophthalic acid segments and tert-butyl branched diol segments and a molecular formula of tert-butyl branched diol is as following:  The cationic modified polyester is further dispersed with a high temperature calcined solid heteropolyacid. A final fiber has a dye uptake of 87.8-92.2% and a K/S value of 23.27-25.67 when dyed at 120&#xb0; C., as well as an intrinsic viscosity drop of 13-17% when stored at 25&#xb0; C. and R.H. 65% for 60 months.

Cationic dyeable polyester fiber and preparing method thereof

A polyester obtained by the esterification of terephthalic acid and ethylene glycol and the polycondensation catalysed by a mixture of magnesium ethylene glycol and antimony ethylene glycol followed by granulation. In the polyester sections, the carboxyl end group is less than 15 mol/t, the mass percentage of oligomer is lower than 0.5%, and weight percentage of diethylene glycol is lower than 0.5%.

Industrial polyester and its preparation method

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Wujiang, China

Xiaoyu Wang