US 12,404,611 B2
Tire cord
Seung Min Yoo, Seoul (KR); and Sung Ho Park, Seoul (KR)
Assigned to KOLON INDUSTRIES, INC., Seoul (KR)
Appl. No. 18/549,894
Filed by KOLON INDUSTRIES, INC., Seoul (KR)
PCT Filed Jan. 24, 2022, PCT No. PCT/KR2022/001204
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2022/203183, PCT Pub. Date Sep. 29, 2022.
Claims priority of application No. 10-2021-003824 (KR), filed on Mar. 24, 2021.
Prior Publication US 2024/0157730 A1, May 16, 2024
Int. Cl. D02G 3/48 (2006.01); B60C 9/00 (2006.01); D01F 6/62 (2006.01)
CPC D02G 3/48 (2013.01) [B60C 9/0042 (2013.01); D01F 6/62 (2013.01); D10B 2331/04 (2013.01); D10B 2505/022 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A tire cord comprising a polyester drawn yarn containing 25 wt % or more of recycled polyethylene terephthalate having an intrinsic viscosity of 0.9 dl/g to 1.5 dl/g and an isophthalic acid content of less than 1.0 mol % based on the total carboxylic acid component,
wherein a tensile strength is 7.0 g/d to 8.0 g/d and an elongation at break is 15.0% to 17.5% when measured according to the standard test method of ASTM D 885.