	US 12,441,824 B2
	Rubber composition and tire
Kensuke Shirode, Itami (JP)
Assigned to Toyo Tire Corporation, Itami (JP)
Filed by Toyo Tire Corporation, Itami (JP)
Filed on Nov. 9, 2022, as Appl. No. 17/983,636.
Claims priority of application No. 2021-213130 (JP), filed on Dec. 27, 2021.
Prior Publication US 2023/0203226 A1, Jun. 29, 2023
Int. Cl. C08K 5/5455 (2006.01); B60C 1/00 (2006.01); C08F 212/08 (2006.01); C08F 236/06 (2006.01); C08K 3/36 (2006.01); C08K 5/5419 (2006.01); C08K 5/544 (2006.01)

CPC C08F 236/06 (2013.01) [B60C 1/0016 (2013.01); C08F 212/08 (2013.01); C08K 3/36 (2013.01); C08K 5/5419 (2013.01); C08K 5/544 (2013.01); C08K 2201/006 (2013.01); C08K 2201/014 (2013.01)]

18 Claims

1. A rubber composition comprising:

a diene rubber; and

silica, wherein

a change rate of a distance between aggregates represented by V50/V0 calculated by an inertia radius V50 of a silica aggregate and an inertia radius V0 of the silica aggregate is 1.30 or more, the inertia radius V50 being obtained by performing a small-angle X-ray scattering measurement in a state where a vulcanized rubber obtained by vulcanizing the rubber composition is elongated by 50%, and the inertia radius V0 being obtained by performing a small-angle X-ray scattering measurement in a state where the vulcanized rubber is not elongated.