The pneumatic tire of the present invention characterized by comprising: bead cores, a carcass ply, an inner liner and a tread having a volume of the low density region of 35% or more, at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5% or less at elongation by an applied stress of 3.0 MPa and a glass transition temperature of −20° C. or lower, and the crosslinked rubber composition of the present invention having a volume of the low density region of 35% or more at elongation by an applied stress of 1.5 MPa, a volume of the void portion of 7.5 or less at elongation by an applied stress of 3.0 MPa and a glass transition temperature of −20° C. or lower are excellent in abrasion resistance.

A body ply skim layer in which a reinforcing ply is embedded, arranged at a distance T from an outer surface of the body ply skim layer and at a distance B from an inner surface of the body ply skim layer, such as to define an asymmetry index AT equal to 100×(T−B/T+B). The asymmetry index AT is greater than −100 and less than 0.

Rubber compounds that comprise rubber and propylene-a-olefin-diene (PE(D)M) polymers may be useful in tire-related articles (e.g., tire sidewalls, inner tubes, and innerliners). Such a rubber compound may comprise: about 5 phr to about 50 phr of the PE(D)M polymer that comprises about 65 wt % to about 99.5 wt % propylene, about 0.5 wt % to about 35 wt % a-olefin that is not propylene, and 0 wt % to about 20 wt % diene, said wt % based on the weight of the PE(D)M polymer, and about 50 parts per hundred parts rubber (phr) to about 95 phr of a rubber that comprises one selected from the group consisting of the halogenated isobutylene-based rubber is selected from the group consisting of: natural rubber, polyisoprene rubber, poly(styrene-co-butadiene) rubber, polybutadiene rubber, poly(isoprene-co-butadiene) rubber, styrene-isoprene-butadiene rubber, butyl rubber, star branched butyl rubber, isobutylene-isoprene rubber, poly(isobutylene-co-alkylstyrene), a halogenated isobutylene-based rubber, polychloroprene rubber, nitrile rubber, and any combination thereof.

An elastomeric composition is provided that includes from 1 to 100 parts by weight per hundred parts by weight rubber (phr) of a first propylene-α-olefin-diene (PEDM) terpolymer comprising 70 wt % to 92.5 wt % propylene, 7.5 wt % to 30 wt % a C2 or C4-C12 α-olefin, and 3.5 wt % to 20 wt % diene, said wt % based on the weight of the PEDM terpolymer. The PEDM terpolymer V may have a Mooney viscosity (ML(1+4)) of 25 MU to 100 MU. The composition may further include from 0 to 99 phr of an ethylene-based copolymer comprising 40 wt % to 95 wt % ethylene.

An elastomeric composition suitable for use in belts like transmission belts may comprise: from 5 to 100 phr of a propylene-α-olefin-diene (PEDM) terpolymer comprising 80 wt % to 97.5 wt % propylene, 2.5 wt % to 20 wt % a-olefin, and 0.5 wt % to 10 wt % diene, said wt % based on the weight of the PEDM terpolymer, and wherein the PEDM terpolymer has (a) Mooney viscosity (ML(1+4)) of 1 MU to 60 MU, (b) melt flow rate of 0.5 g/min to 100 g/min, and (c) a weight average molecular weight to n-average molecular weight (Mw/Mn) ratio of 1.5 to 3.0; and from 60 to 95 phr of an ethylene-based copolymer comprising 0 wt % to 95 wt % ethylene, 0 wt % to 10 wt % of one or more dienes, and 5 wt % to 60 wt % C3 to C12 α-olefin, said wt % based on the total weight of the ethylene-based copolymer.

A pressure-sensitive adhesive may comprise: about 18 wt % to about 90 wt % of a propylene-ethylene(-diene) (PE(D)M) copolymer; about 10 wt % to about 65 wt % of a tackifier; and 0 wt % to about 40 wt % of an oil. The PE(D)M copolymer may comprise: (a) about 60 wt % to about 99 wt % propylene, (b) about 1 wt % to about 40 wt % ethylene or a C4 to C22 alpha-olefin, and (c) 0 wt % to about 20 wt % diene, wherein the PE(D)M copolymer has a heat of fusion of about 15 J/g or less.

Provided is a sulfur-containing unsaturated hydrocarbon polymer which can improve wet grip performance and fuel efficiency of a tire in a well-balanced manner by being blended into a rubber composition for a tire. A sulfur-containing unsaturated hydrocarbon polymer of the present invention is a reaction product obtained by reacting sulfur with an unsaturated bond in a polymer of an unsaturated hydrocarbon.

Provided is an inner liner which adheres to the carcass or other rubber composition layer of a tire, even during low-temperature vulcanization on the order of 160° C., without using an adhesive or an adhesive tie gum. The invention provides a pneumatic tire inner liner comprising a thermoplastic elastomer composition, characterized in that the thermoplastic elastomer composition includes a thermoplastic resin (a11) having a melting point of 180° C. or lower, or a thermoplastic elastomer (a12) having a melting point of 180° C. or lower and including no residue containing an unsaturated bond derived from a conjugated diene compound, and an elastomer (a2) including a residue containing an unsaturated bond derived from a conjugated diene compound, and the tensile elongation at break of the thermoplastic elastomer composition at 25° C. temperature and 500 mm/min pull speed is 100% or greater.

The present invention relates to new vulcanisable elastomeric compositions for components of tyres, comprising modified silicate fibres as fillers. The silicate fibres are modified according to the process with controlled pH of the invention. In addition, the invention regards components of tyres, comprising elastomeric materials obtainable by vulcanisation of said compositions, and tyres for vehicles comprising one or more of said components. The vulcanised elastomeric materials according to the invention are characterised by good static and dynamic mechanical properties, in particular by particularly low hysteresis. Advantageously the tyres of the invention comprising one or more of said components have a limited rolling resistance.

A coated wire includes a steel alloy coated with a coating comprising one or more amino alkoxy-modified silsesquioxane compounds selected from the group consisting of an amino alkoxy-modified silsesquioxane, an amino/mercaptan co-alkoxy-modified silsesquioxane, an amino/blocked mercaptan co-alkoxy-modified silsesquioxane, or a salt of one or more thereof. A rubber composition and a process for coating wire is also disclosed.