Ply coat rubber composition and a tire comprising a ply coat rubber composition
AssigneeThe Goodyear Tire & Rubber Company
InventorsCarolin Anna Welter, Jean-Claude Knepper, Marc-André Paulus, Betul Buehler, Dawn Michelle Johnson, Philippe Schmit, Vaibhav Nawale
Life of this patent
Estimating the term…
Abstract
In accordance with the invention, a ply coat rubber composition for a tire ply comprises from 60 phr to 90 phr of natural rubber, from 10 phr to 40 phr of synthetic polyisoprene, from 30 phr to 80 phr of pre-silanized and precipitated silica, from 0.1 phr to 5 phr of a cobalt salt, up to 15 phr of carbon black, up to 5 phr of resin, and up to 8 phr of oil. Moreover, the invention is directed to a tire comprising such a rubber composition.
Claims20
A ply coat rubber composition, the rubber composition comprising:
- 60 phr to 100 phr of natural rubber, up to 40 phr of synthetic polyisoprene, 30 phr to 80 phr of pre-silanized precipitated silica, 0.1 phr to 5 phr of a cobalt salt, 0 to 15 phr of carbon black, 0 to 5 phr of a resin, a silica coupling agent, wherein the phr ratio of said pre-silanized precipitated silica to the silica coupling agent is between 5:1 and 30:1, and 0 to 8 phr of oil.
A ply rubber composition, the rubber composition comprising:
- 60 phr to 100 phr of natural rubber, up to 40 phr of synthetic polyisoprene, 30 phr to 80 phr of pre-silanized precipitated silica, 0 to 15 phr of carbon black, 0 to 5 phr of a resin, a silica coupling agent, wherein the phr ratio of said pre-silanized precipitated silica to the silica coupling agent is between 5:1 and 30:1, and 0 to 8 phr of oil.
A tire having at least one ply selected from the group consisting of a belt ply, a carcass ply, an overlay ply, and a ply strip, wherein at least one of the plies or the ply strip of the tire comprises a rubber composition comprising:
- from 60 phr to 100 phr of natural rubber, from 0 phr to 40 phr of synthetic polyisoprene, from 30 phr to 80 phr of pre-silanized precipitated silica, optionally from 0.1 to 5 phr of a cobalt salt, from 0 phr to 15 phr of carbon black, from 0 phr to 5 phr of resin, a silica coupling agent, wherein the phr ratio of said pre-silanized precipitated silica to the silica coupling agent is between 5:1 and 30:1, and from 0 phr to 8 phr of oil.
Dependencies are inferred from the claim text.