[특허]Plant oil-containing rubber compositions, tread thereof and race tires containing the tread

Bridgestone Americas Tire Operations, LLC

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특허 상세정보

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Plant oil-containing rubber compositions, tread thereof and race tires containing the tread

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60C-001/00 C08L-009/06 B60C-011/00
출원번호	US-0153389 (2016-05-12)
등록번호	US-10179479 (2019-01-15)
발명자 / 주소	Boley, Dennis C. Schilling, Brett W.
출원인 / 주소	Bridgestone Americas Tire Operations, LLC
대리인 / 주소	Hooker, Meredith E.
인용정보	피인용 횟수 : 0 인용 특허 : 214

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Disclosed herein are rubber compositions comprising at least one elastomer; reinforcing filler comprising carbon black, silica, or a combination thereof; at least one hydrocarbon resin; and at least one plant oil and optionally at least one additional oil, wherein the total amount of reinforcing filler is at least 25% by weight of the rubber composition and the total amount of oil is at least 60 phr and comprises about 15 to about 35% by weight of the rubber composition. The rubber compositions are useful in tire treads, particularly tire treads for race...

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1. A race tire tread comprising a rubber composition comprising: 100 parts by weight of at least one elastomer selected from the group consisting of natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, styrene-butadiene rubber, and combinations thereof;about 65 to about 150 phr of reinforcing filler comprising carbon black, or carbon black and silica, wherein about 95 to 100% by weight of the reinforcing filler is one or more carbon blacks;about 5 to about 70 phr of at least one hydrocarbon resin;about 25 to about 100 phr of at least one plant oil comprising a palm oil and optionally at least one additional oil;wherein the total amount of reinforcing filler is at least about 25% by weight of the rubber composition, and the total amount of oil in the rubber composition is at least 60 phr and comprises about 15 to about 35% by weight of the rubber composition,wherein the road-contacting surface of the tread is slick. 2. The race tire tread of claim 1, wherein a majority by weight of the 100 parts by weight of at least one elastomer comprises a synthetic elastomer, optionally oil-extended. 3. The race tire tread of claim 2, wherein the synthetic elastomer comprises styrene-butadiene copolymer, optionally functionalized. 4. The race tire tread of claim 1, wherein 100% by weight of the 100 parts by weight of at least one elastomer comprises styrene-butadiene copolymer. 5. The race tire tread of claim 1, wherein the at least one elastomer comprises a majority by weight of at least one oil-extended synthetic elastomer and the at least one oil-extended synthetic elastomer comprises 25-60% by weight oil. 6. The race tire tread of claim 1, wherein the palm oil is present in an amount of 40 to 90 phr. 7. The race tire tread of claim 6, wherein the palm oil comprises coconut oil. 8. The race tire tread of claim 1, wherein the rubber composition meets at least one of the following: a. has a durometer reading of about 20 to about 65 at 100° C.;b. has a durometer reading at room temperature of about 40 to about 70;c. has an elongation at break of about 400 to about 900% at room temperature;d. has a tan δ at 35° C. of about 0.2 to about 0.8;e. has a tan δ at 100° C. of about 0.1 to about 0.6;f. has an E′ at 35° C. of about 2.5 to about 10; org. has an E′ at 100° C. of about 1.1 to about 6. 9. The race tire tread of claim 1 wherein the at least one elastomer is functionalized, oil-extended styrene-butadiene copolymer. 10. A race tire having a tread comprising a rubber composition comprising: 100 parts by weight of at least one elastomer selected from the group consisting of natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, styrene-butadiene rubber, and combinations thereof;about 65 to about 150 phr of reinforcing filler comprising carbon black, or carbon black and silica, wherein about 95 to 100% by weight of the reinforcing filler is one or more carbon blacks;about 5 to about 70 phr of at least one hydrocarbon resin;about 25 to about 100 phr of at least one plant oil comprising a palm oil and optionally at least one additional oil;wherein the total amount of reinforcing filler is at least about 25% by weight of the rubber composition, and the total amount of oil in the rubber composition is at least 60 phr and comprises about 15 to about 35% by weight of the rubber composition,wherein the road-contacting surface of the tread is slick. 11. The race tire of claim 10, wherein the at least one elastomer is styrene-butadiene copolymer. 12. The race tire of claim 10, wherein the at least one elastomer is functionalized styrene-butadiene copolymer. 13. A race tire having a tread comprising a rubber composition comprising: 100 parts by weight of at least one elastomer selected from the group consisting of natural rubber, synthetic polyisoprene rubber, polybutadiene rubber, styrene-butadiene rubber, and combinations thereof;about 65 to about 150 phr of reinforcing filler comprising carbon black, or carbon black and silica, wherein about 95 to 100% by weight of the reinforcing filler is one or more carbon blacks;about 5 to about 70 phr of at least one hydrocarbon resin;about 25 to about 100 phr of coconut oil and optionally at least one additional oil;wherein the total amount of reinforcing filler is at least about 25% by weight of the rubber composition, and the total amount of oil in the rubber composition is at least 60 phr and comprises about 15 to about 35% by weight of the rubber composition,wherein the road-contacting surface of the tread is slick. 14. The race tire of claim 13, wherein the rubber composition meets at least one of the following: a. has a durometer reading of about 20 to about 65 at 100° C.;b. has a durometer reading at room temperature of about 40 to about 70;c. has an elongation at break of about 400 to about 900% at room temperature;d. has a tan δ at 35° C. of about 0.2 to about 0.8;e. has a tan δ at 100° C. of about 0.1 to about 0.6;f. has an E′ at 35° C. of about 2.5 to about 10; org. has an E′ at 100° C. of about 1.1 to about 6. 15. The race tire of claim 14, wherein the at least one elastomer comprises a majority by weight of at least one oil-extended synthetic elastomer and the at least one oil-extended synthetic elastomer comprises 25-60% by weight oil. 16. The race tire of claim 13, wherein the rubber composition meets all of the following: a. has a durometer reading of about 20 to about 65 at 100° C.;b. has a durometer reading at room temperature of about 40 to about 70;c. has an elongation at break of about 400 to about 900% at room temperature;d. has a tan δ at 35° C. of about 0.2 to about 0.8;e. has a tan δ at 100° C. of about 0.1 to about 0.6;f. has an E′ at 35° C. of about 2.5 to about 10; org. has an E′ at 100° C. of about 1.1 to about 6. 17. The race tire of claim 16, wherein the coconut oil is present in an amount of 40 to 90 phr. 18. The race tire of claim 17, wherein a majority by weight of the 100 parts by weight of at least one elastomer comprises an oil-extended synthetic elastomer. 19. The race tire of claim 18, wherein the synthetic elastomer comprises a functionalized styrene-butadiene copolymer. 20. The race tire of claim 16, wherein 100% by weight of the 100 parts by weight of at least one elastomer comprises styrene-butadiene copolymer.

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Plant oil-containing rubber compositions, tread thereof and race tires containing the tread

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Plant oil-containing rubber compositions, tread thereof and race tires containing the tread

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