Tire inner liner
AssigneeCompagnie Generale Des Etablissements Michelin
InventorTingdong LIN
Life of this patent
Estimating the term…
Abstract
A tire is provided that has an inner liner with a rubber composition based upon a cross-linkable rubber composition that has per 100 parts by weight of rubber. The tire has a rubber component between 80 phr and 98 phr of a butyl rubber, between 0.5 phr and 15 phr of a polybutadiene rubber and between 0 phr and 20 phr of a polyisoprene. Also present is between 1 phr and 10 phr of a plasticizing resin having a glass transition temperature of at least 25° C. Also included is between 1 phr and 40 phr of a platy filler, and a curing system.
Claims20
A tire comprising an inner liner, the inner liner comprising a rubber composition based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber:
- a rubber component comprising between 80 phr and 98 phr of a butyl rubber, between 0.5 phr and 15 phr of a polybutadiene rubber and between 0 phr and 20 phr of a polyisoprene;
- between 1 phr and 10 phr of a plasticizing resin having a glass transition temperature of at least 25° C.;
- between 1 phr and 40 phr of a platy filler;
- and
- a curing system.
The tire of claim 2, wherein the rubber component includes no other elastomer other than the butyl, polybutadiene and polyisoprene rubbers.
A tire comprising an inner liner, the inner liner comprising a rubber composition based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber:
- a rubber component comprising between 80 phr and 98 phr of a butyl rubber, between 0.5 phr and 15 phr of a polybutadiene rubber and between 0 phr and 20 phr of a polyisoprene;
- between 1 phr and 10 phr of a plasticizing resin having a glass transition temperature of at least 25° C.;
- between 1 phr and 40 phr of a platy filler;
- and
- a curing system,
- wherein the inner liner has an oxygen impermeability of less than 300 (mm cc)/(m2 day).
A tire comprising an inner liner, the inner liner comprising a rubber composition based upon a cross-linkable rubber composition, the cross-linkable rubber composition comprising, per 100 parts by weight of rubber:
- a rubber component comprising between 80 phr and 98 phr of a butyl rubber, between 0.5 phr and 15 phr of a polybutadiene rubber and between 0 phr and 20 phr of a polyisoprene;
- between 1 phr and 10 phr of a plasticizing resin having a glass transition temperature of at least 25° C.;
- between 1 phr and 40 phr of a platy filler;
- and
- a curing system,
- wherein the inner liner has an oxygen impermeability of less than 300 (mm cc)/(m2 day);
- and
- wherein the inner liner has a shear modulus G* at −40° C. of less than 180 MPa.
Dependencies are inferred from the claim text.