US 12,152,132 B2
Tire rubber composition
Tomoyuki Sakai, Kanagawa (JP); Masayuki Kawazoe, Kanagawa (JP); and Toru Noguchi, Nagano (JP)
Assigned to The Yokohama Rubber Co., Ltd., Tokyo (JP); and Shinshu University, Nagano (JP)
Appl. No. 16/975,067
Filed by The Yokohama Rubber Co., Ltd., Tokyo (JP); and Shinshu University, Nagano (JP)
PCT Filed Feb. 25, 2019, PCT No. PCT/JP2019/007087
§ 371(c)(1), (2) Date Aug. 21, 2020,
PCT Pub. No. WO2019/167889, PCT Pub. Date Sep. 6, 2019.
Claims priority of application No. 2018-032793 (JP), filed on Feb. 27, 2018.
Prior Publication US 2020/0392309 A1, Dec. 17, 2020
Int. Cl. C08L 1/04 (2006.01); B60C 1/00 (2006.01); C08L 7/02 (2006.01); C08L 9/04 (2006.01); C08L 9/08 (2006.01); C08L 11/02 (2006.01)
CPC C08L 1/04 (2013.01) [B60C 1/00 (2013.01); C08L 7/02 (2013.01); C08L 9/04 (2013.01); C08L 9/08 (2013.01); C08L 11/02 (2013.01)] 9 Claims
 
1. A rubber composition for a tire comprising:
1 to 50 parts by mass of oxidized cellulose nanofibers blended in 100 parts by mass of a diene rubber,
the diene rubber containing 5% by mass or greater of a modified diene rubber,
the modified diene rubber including at least one of: a rubber latex and a liquid rubber, and
the modified diene rubber having 0.1% by mol or greater of a polar group selected from the group consisting of: a carboxy group, an acid anhydride group, an epoxy group, a hydroxy group, an amino group, an amide group, a nitro group, a mercapto group, an aldehyde group, an imide group, an alkoxy group, and an isocyanate group.