Certains contenus de cette application ne sont pas disponibles pour le moment.
Si cette situation persiste, veuillez nous contacter àObservations et contact
1. (WO2018102289) COMPOSITIONS DE CAOUTCHOUC RENFORCÉES À L'OXYDE DE FER
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

CLAIMS

What is claimed is:

1. A rubber composition that is based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, parts by weight per 100 parts by weight of rubber (phr): an epoxidized rubber;

between 30 phr and 800 phr of an iron oxide reinforcement filler having an average particle diameter of no more than 500 nm; and

a curing system.

2. The rubber composition of claim 1, wherein the iron oxide reinforcement filler is selected from the group consisting of ferric oxide, iron (II, III) oxide and combinations thereof.

3. The rubber composition of claim 2, wherein the iron oxide reinforcement filler is ferric oxide.

4. The rubber composition of claim 2, wherein the iron (II, III) oxide is Fe304.

5. The rubber composition of any of the preceding claims, wherein the epoxidized rubber has a content of units of conjugated diene origin that is great than 50 mol%.

6. The rubber composition of claim 5, wherein the epoxidized rubber is selected from the group consisting of an epoxidized polybutadiene, an epoxidized natural rubber, an epoxidized polyisoprene rubber, an epoxidized styrene-butadiene rubber and combinations thereof.

7. The rubber composition of claim of any of the preceding claims, wherein an epoxy-function content of the epoxidized rubber is between 2 mol% and 25 mol%.

8. The rubber composition of claim 7, wherein the epoxy-function content is between 5 mol% and 10 mol%.

9. The rubber composition of any of the preceding claims, wherein the cross-linkable rubber composition comprises between 25 phr and 100 phr of the epoxidized rubber and further comprises between 0 phr and 25 phr of a second rubber component that is not epoxidized.

10. The rubber composition of any of claims 1 through 8, wherein the cross-linkable rubber composition comprises between 45 phr and 100 phr of the epoxidized rubber and further comprises between 0 phr and 55 phr of a second rubber component that is not epoxidized.

11. The rubber composition of claim 9 or 10, wherein the second rubber component is selected from the group consisting of natural rubber, polybutadiene rubber, styrene-butadiene rubber, polyisoprene rubber and combinations thereof.

12. The rubber composition of any of the preceding claims, wherein the iron oxide reinforcement filler has an average particle diameter of no more than 250 nm.

13. The rubber composition of claim 12, wherein the iron oxide reinforcement filler has an average particle diameter of no more than 100 nm.

14. The rubber composition of claim 12, wherein the iron oxide reinforcement filler has an average particle diameter of between 30 nm and 65 nm.

15. The rubber composition of any of the preceding claims, wherein the cross-linkable rubber composition comprises between 50 phr and 800 phr of the iron oxide reinforcing filler.

16. The rubber composition of claim 15, wherein the cross-linkable rubber composition comprises between 50 phr and 600 phr of the iron oxide reinforcing filler.

17. The rubber composition of claim 15, wherein the cross-linkable rubber composition comprises between 100 phr and 500 phr of the iron oxide reinforcing filler.

18. The rubber composition of any of the preceding claims, where the cross -linkable rubber composition further comprises a secondary reinforcement filler selected from the group consisting of carbon black, silica and combinations thereof.

19. A tire, formed at least in part with the rubber composition of any of the preceding claims.

20. The tire of claim 19, wherein the tire comprises a tread formed at least in part by the rubber composition.

21. The tire of claim 20, wherein the tread is of a cap and base construction and wherein the cap is formed by the rubber composition.

22. The tire of claim 20, wherein the base is formed by the rubber composition.