An aromatic polyphenol derivative which comprises at least one aromatic ring bearing at least two OZ groups in the meta position relative to one another, the two positions ortho to at least one of the OZ groups being unsubstituted, is used for the manufacture of a phenol-aldehyde resin for reinforcing a rubber composition. Each OZ group represents an O((CO)(R.sub.1)) group with R.sub.1 representing a hydrocarbon-based radical or a substituted hydrocarbon-based radical.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

The invention provides a tire rubber composition capable of giving crosslinked products having excellent properties including mechanical strength such as abrasion resistance, a crosslinked product of the composition, and a tire tread, a bead filler, a tire belt and a pneumatic tire which each partially include the composition or the crosslinked product and which each exhibit satisfactory dry grip performance plus excellent wet grip performance and ice grip performance and can attain enhanced steering stability. The tire rubber composition includes 100 parts by mass of a solid rubber (A) having a glass transition temperature (Tg) of not more than 10 C., 0.1 to 50 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 200 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) to (iv): (i) the weight average molecular weight (Mw) is not less than 1,000 and less than 15,000, (ii) the vinyl content is not more than 70 mol %, (iii) the average number of the functional groups per molecule of the modified liquid diene rubber (B) is 1 to 20, and (iv) the glass transition temperature (Tg) is not more than 0 C.

The invention provides a high-grip tire rubber composition excellent in steering stability, rolling resistance performance and abrasion resistance, and a tire tread, a bead filler, a tire belt and a pneumatic tire which each partially include the composition. The high-grip tire rubber composition includes 100 parts by mass of a solid rubber (A), the solid rubber (A) including not less than 60 mass % of a styrene butadiene rubber with 20 mass % or more styrene content, 0.1 to 90 parts by mass of a modified liquid diene rubber (B) having a functional group derived from a silane compound with a specific structure, and 20 to 150 parts by mass of a filler (C), the modified liquid diene rubber (B) satisfying the following (i) and (ii): (i) the weight average molecular weight (Mw) is 15,000 to 120,000, and (ii) the vinyl content is not more than 70 mol %.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

Crumb rubber obtained from recycled tires is subjected to an interlinked substitution process. The process utilizes a reactive component that interferes with sulfur bonds. The resulting treated rubber exhibits properties similar to those of the virgin composite rubber structure prior to being granulated, and is suitable for use in fabricating new tires, engineered rubber articles, and asphalt rubber for use in waterproofing and paving applications.

A threadlike metallic or metallized reinforcer, for example a thread, film, tape or cord made of carbon steel, at the periphery of which is positioned a layer of metal referred to as surface metal chosen from copper, nickel and copper/nickel alloys, is characterized in that this surface metal layer is itself coated, at least in part, with at least one layer of graphene; preferably, there is grafted, to this graphene, at least one functional group which can crosslink to a polymer matrix. This reinforcer of the invention is effectively protected from corrosion by virtue of the graphene present at the surface; advantageously, it can be adhesively bonded directly, without adhesion primer or addition of metal salt, to an unsaturated rubber matrix, such as natural rubber, by virtue of the possible functionalization of this graphene.

A method for producing a vehicle tire, having the following steps: a) providing textile reinforcing supports; b) providing a bath which is free of resorcin and formaldehyde by at least: b1) adding at least one carboxylic acid to water; b2) adding at least one base; b3) adding at least one epoxy compound; b4) adding at least one polyisocyanate compound; b5) adding at least one VP latex; and b6) mixing the substances from b1) to b5); c) dipping the reinforcing supports from step a) into the bath from step b); d) subsequently hot-stretching the dipped reinforcing supports from step c); and e) further processing the reinforcing supports from step d) in order to form a reinforcing support layer in a vehicle tire blank. A vehicle tire which is produced using the method and to the use of reinforcing supports treated in such a manner in technical rubber articles are also disclosed.

One embodiment of the present invention provides a rubber reinforcement material which comprises a fiber substrate, an adhesive layer disposed on the fiber substrate, a rubber compound layer disposed on the adhesive layer, and resorcinol-formaldehyde-latex (RFL), wherein the rubber compound layer has a thickness of 5 m to 200 m.

A resin-metal composite member for a tire, the member including: a metal member; an adhesive layer; and a covering resin layer in this order, wherein: the adhesive layer includes a continuous phase that contains a polyester-based thermoplastic elastomer having a polar functional group, and a discontinuous phase that contains at least one of a polyphenylene ether resin or a styrene resin and contains a styrene-based elastomer having an epoxy group.