	US 12,391,822 B2
	Rubber composition for tyre tread
Vikram Singh, Enschede (NL); Louis Reuvekamp, Enschede (NL); Tharik Mohamed, Enschede (NL); and Hendrik Stevens, Enschede (NL)
Assigned to Apollo Tyres Global R&D B.V., Enschede (NL)
Appl. No. 17/437,529
Filed by Apollo Tyres Global R&D B.V., Enschede (NL)
PCT Filed Mar. 13, 2020, PCT No. PCT/EP2020/056945 § 371(c)(1), (2) Date Sep. 9, 2021, PCT Pub. No. WO2020/183008, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 101153 (LU), filed on Mar. 14, 2019.
Prior Publication US 2022/0153966 A1, May 19, 2022
Int. Cl. C08L 9/00 (2006.01); B60C 1/00 (2006.01); B60C 11/00 (2006.01)

CPC C08L 9/00 (2013.01) [B60C 1/0016 (2013.01); B60C 11/0008 (2013.01); B60C 2011/0025 (2013.01); C08L 2205/035 (2013.01); C08L 2312/08 (2013.01)]

13 Claims

1. A cross-linkable rubber composition, the cross-linkable rubber composition comprising, based upon parts by weight per 100 parts by weight rubber (phr):

≥70 phr to ≤80 phr of a butadiene rubber and ≥10 phr to ≤20 phr of a natural rubber,

a syndiotactic 1,2-polybutadiene,

coupling agent,

a filler, and

a resin,

wherein the composition comprises ≥10 phr to ≤20 phr of the syndiotactic 1,2-polybutadiene, and wherein the composition comprises ≥1 phr to ≤20 phr of at least two coupling agents wherein one of the coupling agents is or comprises a mercapto based silane and wherein the ratio of the mercapto based silane to the second coupling agent is in the range of ≥2:1 to ≤10:1.