The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 2024
Filed:
Aug. 24, 2021
Jiangsu Hengli Chemical Fibre Co., Ltd., Suzhou, CN;
Fangming Tang, Suzhou, CN;
Shanshui Wang, Suzhou, CN;
Lili Wang, Suzhou, CN;
Ye Zhang, Suzhou, CN;
Cunhong Wei, Suzhou, CN;
Yumei Zhang, Suzhou, CN;
Yanli Zhao, Suzhou, CN;
JIANGSU HENGLI CHEMICAL FIBRE CO., LTD., Suzhou, CN;
Abstract
A high-strength creep-resistant polyester industrial yarn and preparation method thereof are provided. The high-strength creep-resistant polyester industrial yarn is prepared by spinning, winding and coordination treatment of a modified polyester after solid-state polycondensation to increase viscosity. The condition of coordination treatment is 60-72 hours at 80-100° C. The coordination agent is AgNO, FeCl, CuCl, or NiCl. The polyester segments of the prepared high-strength creep-resistant polyester industrial yarn includes a terephthalic acid segment, an ethylene glycol segment and a 2-(4-pyridine) terephthalic acid segment, and 2-(4-pyridine) terephthalic acid segments of different polyester segments are coordinated by metal ions (Ag, Fe, Cuor Ni). The molar ratio of the terephthalic acid segment to the 2-(4-pyridine) terephthalic acid segment is 1:(0.03-0.05). The N atom on the pyridine of the 2-(4-pyridine) terephthalic acid segment is involved in coordination. Metal ions are coordinated with 2-(4-pyridine) terephthalic acid to greatly reduce the creep degree of the polyester fiber.