US 12,331,191 B2
Rubber composition for sustainable tire having lignin compounds
Da Mi Jeong, Daejeon (KR); Jeong Heon Kim, Dajeon (KR); and Hak Joo Kim, Daejeon (KR)
Assigned to HANKOOK TIRE & TECHNOLOGY CO., LTD., Seongnam-si (KR)
Filed by Hankook Tire & Technology Co., Ltd., Seongnam-si (KR)
Filed on Mar. 11, 2021, as Appl. No. 17/198,579.
Claims priority of application No. 10-2020-0073388 (KR), filed on Jun. 17, 2020.
Prior Publication US 2021/0395497 A1, Dec. 23, 2021
Int. Cl. C08L 7/00 (2006.01); B60C 1/00 (2006.01); C08K 3/04 (2006.01); C08L 97/00 (2006.01)
CPC C08L 7/00 (2013.01) [B60C 1/0016 (2013.01); C08L 97/005 (2013.01); C08K 3/04 (2013.01)] 10 Claims
 
1. A rubber composition for a tire, the rubber composition comprising 100 parts by weight of a raw material rubber, 40 to 50 parts by weight of a reinforcing filler, 1 to 20 parts by weight of an antioxidant, and 0.1 to 3 parts by weight of a crosslinking agent,
wherein the antioxidant includes a compound having the following chemical formula:

OG Complex Work Unit Chemistry
wherein at least one of R1, R2, and R3 is a first functional group comprising an amine group,
wherein when present, remaining one or ones of the R1, R2 and R3 are a hydrogen atom or a functional group different from the first functional group, and
wherein the reinforcing filler includes carbon black.