Elastomer compositions with carbon black
View Patent ↗An elastomer composition includes an elastomer and a carbon black, wherein the carbon black is characterized as having a COAN of between about 90 and 150 ml/100 g, a BET of between 50 and 69 m 2 /g and a distribution index DI that is greater than 1.15, wherein the DI is a ratio of d w to d mode . In particular embodiments, the elastomer may be selected from one or more natural rubbers, one or more synthetic rubbers or combinations thereof. For example, the one or more synthetic rubbers may be selected from styrene butadiene rubber, butadiene rubber, polyisoprene rubber, butyl rubber or combinations thereof. Products made from the elastomer composition include tires and other products, particularly tires that include a sidewall, a carcass, a carcass reinforcement, tread and/or an undertread comprising the elastomeric composition.
1. A tire, comprising:
a sidewall, wherein the sidewall comprises a rubber composition, the rubber composition comprising:
an elastomer selected from one or more natural rubbers, one or more synthetic rubbers or combinations thereof; and
a carbon black, wherein the carbon black is characterized as having a COAN of between about 97 and 115 ml/100 g, a BET of between 50 and 69 m 2 /g and a distribution index DI that is greater than 1.15, wherein the DI is a ratio of d w to d mode , an iodine adsorption number of between 50 and 60 mg/g, and an OAN of between 150 and 170 ml/100 g.
2. The tire of claim 1 , wherein the distribution index DI is < about 1.60.
3. The tire of claim 1 , wherein the carbon black is further characterized as having a ratio of L to d mode between about 0.7 and about 1.5.
4. The tire of claim 3 , wherein the ratio of L to d mode is greater than 0.8 and less than 1.2.
5. The tire of claim 1 , wherein the BET is between about 57 and 63 m 2 /g.
6. The tire of claim 1 , wherein the one or more synthetic rubbers are selected from styrene butadiene rubber, butadiene rubber, polyisoprene rubber, butyl rubber or combinations thereof.
7. The tire of claim 1 , wherein the elastomer composition includes the carbon black in an amount of between about 20 and about 200 pounds per hundred pounds of the elastomer.
8. A tire, comprising:
a tread, wherein the tread comprises a rubber composition, the rubber composition comprising:
an elastomer selected from one or more natural rubbers, one or more synthetic rubbers or combinations thereof; and
a carbon black, wherein the carbon black is characterized as having a COAN of between about 97 and 115 ml/100 g, a BET of between 50 and 69 m 2 /g and a distribution index DI that is greater than 1.15, wherein the DI is a ratio of d w to d mode , an iodine adsorption number of between 50 and 60 mg/g, and an OAN of between 150 and 170 ml/100 g.
9. The tire of claim 8 , wherein the distribution index DI is < about 1.60.
10. The tire of claim 8 , wherein the carbon black is further characterized as having a ratio of L to d mode between about 0.7 and about 1.5.
11. The tire of claim 10 , wherein the ratio of L to d mode is greater than 0.8 and less than 1.2.
12. The tire of claim 8 , wherein the BET is between about 57 and 63 m 2 /g.
13. The tire of claim 8 , wherein the one or more synthetic rubbers are selected from styrene butadiene rubber, butadiene rubber, polyisoprene rubber, butyl rubber or combinations thereof.
14. The tire of claim 8 , wherein the elastomer composition includes the carbon black in an amount of between about 20 and about 200 pounds per hundred pounds of the elastomer.
15. A tire, comprising:
an undertread, wherein the undertread comprises a rubber composition, the rubber composition comprising:
an elastomer selected from one or more natural rubbers, one or more synthetic rubbers or combinations thereof; and
between about 20 pounds per hundred pounds of the elastomer (phr) and about 200 phr of a carbon black, wherein the carbon black is characterized as having a COAN of between about 97 and 115 ml/100 g, a BET of between 50 and 69 m 2 /g and a distribution index DI that is greater than 1.15, wherein the DI is a ratio of d w to d mode , an iodine adsorption number of between 50 and 60 mg/g, and an OAN of between 150 and 170 ml/100 g.
16. The tire of claim 15 , wherein the distribution index DI is < about 1.60.
17. The tire of claim 15 , wherein the carbon black is further characterized as having a ratio of L to d mode between about 0.7 and about 1.5.
18. The tire of claim 17 , wherein the ratio of L to d mode is greater than 0.8 and less than 1.2.
19. The tire of claim 15 , wherein the BET is between about 57 and 63 m 2 /g.
20. The tire of claim 15 , wherein the one or more synthetic rubbers are selected from styrene butadiene rubber, butadiene rubber, polyisoprene rubber, butyl rubber or combinations thereof.