	US 12,281,221 B2
	Tires comprising rubber compounds that comprise propylene-α-olefin-diene polymers
Eric J. Wamsley, Baytown, TX (US); Babu Shanmugasundaram, Chennai (IN); Zhifeng Bai, Houston, TX (US); Sushil K. Mandot, Houston, TX (US); Sunny Jacob, Seabrook, TX (US); and Milind B. Joshi, Bengaluru (IN)
Assigned to ExxonMobil Engineering & Technology Company, Baytown, TX (US)
Appl. No. 17/624,885
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Jul. 17, 2020, PCT No. PCT/US2020/042633 § 371(c)(1), (2) Date Jan. 5, 2022, PCT Pub. No. WO2021/011906, PCT Pub. Date Jan. 21, 2021.
Claims priority of provisional application 62/875,196, filed on Jul. 17, 2019.
Prior Publication US 2022/0288971 A1, Sep. 15, 2022
Int. Cl. C08J 3/22 (2006.01); B60C 1/00 (2006.01); C08F 4/602 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08J 3/24 (2006.01); C08K 5/01 (2006.01); C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08L 23/16 (2006.01); C08L 23/22 (2006.01); C08L 23/28 (2006.01); C08L 23/283 (2025.01); C09J 123/16 (2006.01)

CPC C08L 23/16 (2013.01) [B60C 1/0008 (2013.01); B60C 1/0025 (2013.01); C08F 4/6028 (2013.01); C08F 4/6592 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08J 3/22 (2013.01); C08J 3/24 (2013.01); C08K 5/01 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 23/22 (2013.01); C08L 23/283 (2013.01); C09J 123/16 (2013.01); C08L 2205/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2312/00 (2013.01); C08L 2314/06 (2013.01); C09J 2423/16 (2013.01); C09J 2467/006 (2013.01)]

25 Claims

1. A tire that comprises:

a rubber compound that comprises:

5 phr to 50 phr of a propylene-α-olefin-(optional diene) PE(D)M polymer that comprises about 65 wt % to about 99.5 wt % propylene, about 0.5 wt % to about 35 wt % C₂or C₄to C₁₆α-olefin, and 0 wt % to about 20 wt % diene, said wt % based on the weight of the PE(D)M polymer, wherein the wt % numbers are uncorrected numbers, and wherein wt % propylene plus wt % of C₂or C₄to C₁₆α-olefin equals 100%, and wherein the PE(D)M polymer has a heat of fusion (Hf) of less than 1 J/g, and

50 parts per hundred parts rubber (phr) to 95 phr of a rubber that comprises one selected from the group consisting of the halogenated isobutylene-based rubber is selected from the group consisting of: natural rubber, polyisoprene rubber, poly(styrene-co-butadiene) rubber, polybutadiene rubber, poly(isoprene-co-butadiene) rubber, styrene-isoprene-butadiene rubber, butyl rubber, star branched butyl rubber, isobutylene-isoprene rubber, poly(isobutylene-co-alkylstyrene), a halogenated isobutylene-based rubber, polychloroprene rubber, nitrile rubber, and any combination thereof; and

wherein the rubber and the PE(D)M polymer cumulatively are 100 phr, and

wherein the rubber compound is included in a sidewall of the tire, an inner tube of the tire, an innerliner of the tire, or any combination thereof.