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AssigneeJiangsu Hengli Chemical Fibre Co., Ltd.
InventorsRui CHEN, Lili WANG, Shanshui WANG, Damao YANG, Ye ZHANG, Xiaohua SUN, Fangming TANG, Tong WANG
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A low-thermal-shrinkage polyester industrial yarn and preparation method thereof are provided. The low-thermal-shrinkage polyester industrial yarn is prepared by spinning and winding a modified polyester after solid-state polycondensation to increase viscosity. The preparation method of the modified polyester includes: after uniformly mixing terephthalic acid, ethylene glycol, 2,5-pyridinedicarboxylic acid and copper chloride, successively performing an esterification reaction and a polycondensation reaction to obtain the modified polyester. The polyester segments of the prepared low-thermal-shrinkage polyester industrial yarn comprises a terephthalic acid segment, an ethylene glycol segment and a 2,5-pyridinedicarboxylic acid segment, and 2,5-pyridinedicarboxylic acid segments of different polyester segments are coordinated by Cu2+. The molar ratio of the terephthalic acid segment to the 2,5-pyridinedicarboxylic acid segment is 1:(0.03-0.05). The O atom on a carbonyl group and the N atom on the pyridine of the 2,5-pyridinedicarboxylic acid segment are involved in the coordination.
A low-thermal-shrinkage polyester industrial yarn, wherein polyester segments of the low-thermal-shrinkage polyester industrial yarn comprise a terephthalic acid segment, an ethylene glycol segment and a 2,5-pyridinedicarboxylic acid segment, and 2,5-pyridinedicarboxylic acid segments of different polyester segments are coordinated by Cu2+;
A method of preparing a low-thermal-shrinkage polyester industrial yarn, wherein the low-thermal-shrinkage polyester industrial yarn is prepared by spinning and winding a modified polyester after solid-state polycondensation to increase viscosity;
Dependencies are inferred from the claim text.