Tire provided with a tread comprising a rubber composition including a thermoplastic resin of poly(methyl methacrylate)
View Patent ↗A tire is provided with a tread comprising a rubber composition based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a polymethyl methacrylate thermoplastic resin, the polymethyl methacrylate thermoplastic resin exhibiting a Vicat point, measured according to Standard ISO 306: 2013 B50, within a range extending from 60° C. to 100° C.
1. A tire provided with a tread comprising a rubber composition based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a polymethyl methacrylate thermoplastic resin, the polymethyl methacrylate thermoplastic resin exhibiting a Vicat softening point, measured according to Standard ISO 306: 2013 B50, within a range extending from 60° C. to 100° C.
2. The tire according to claim 1 , wherein the diene elastomer is selected from the group consisting of polybutadienes, synthetic polyisoprenes, natural rubber, butadiene copolymers, isoprene copolymers and mixtures thereof.
3. The tire according to claim 1 , wherein the diene elastomer is selected from the group consisting of polybutadienes, copolymers of butadiene and styrene, natural rubber and mixtures thereof.
4. The tire according to claim 1 , wherein the reinforcing filler is selected from the group consisting of silicas, carbon blacks and mixtures thereof.
5. The tire according to claim 1 , wherein a content of reinforcing filler is within a range extending from 10 to 200 phr.
6. The tire according to claim 5 , wherein the content of reinforcing filler is within a range extending from 10 to 150 phr.
7. The tire according to claim 1 , wherein the predominant reinforcing filler is carbon black.
8. The tire according to claim 7 , wherein a content of carbon black is within a range extending from 10 to 90 phr.
9. The tire according to claim 8 , wherein the content of carbon black is within a range extending from 10 to 70 phr.
10. The tire according to claim 1 , wherein the predominant reinforcing filler is silica.
11. The tire according to claim 10 , wherein a content of silica is within a range extending from 50 to 140 phr.
12. The tire according to claim 11 , wherein the content of silica is within a range extending from 70 to 120 phr.
13. The tire according to claim 1 , wherein a content of polymethyl methacrylate thermoplastic resin is within a range extending from 1 to 40 phr.
14. The tire according to claim 13 , wherein the content of polymethyl methacrylate thermoplastic resin is within a range extending from 2 to 35 phr.
15. The tire according to claim 14 , wherein the content of polymethyl methacrylate thermoplastic resin is within a range extending from 3 to 30 phr.
16. The tire according to claim 15 , wherein the content of polymethyl methacrylate thermoplastic resin is within a range extending from 5 to 15 phr.
17. The tire according to claim 1 , wherein the Vicat softening point of the polymethyl methacrylate thermoplastic resin is within a range extending from 65° C. to 95° C.
18. The tire according to claim 17 , wherein the Vicat softening point of the polymethyl methacrylate thermoplastic resin is within a range extending from 70° C. to 90° C.
19. The tire according to claim 1 , wherein the rubber composition additionally comprises a plasticizer.
20. The tire according to claim 19 , wherein the plasticizer is selected from the group consisting of oils, hydrocarbon resins and mixtures thereof.
21. The tire according to claim 19 , wherein a content of plasticizer is within a range extending from 2 to 80 phr.
22. The tire according to claim 21 , wherein the content of plasticizer is within a range extending from 5 to 60 phr.
23. The tire according to claim 1 , wherein the rubber composition does not comprise a plasticizing agent other than the polymethyl methacrylate thermoplastic resin.