The present invention is directed to the use of modified vegetable oils in rubber compositions and in tires.

A tire is provided with an outer sidewall, said outer sidewall comprising at least a rubber composition based on at least an elastomer, a reinforcing filler, a crosslinking system and more than 25 phr of a crumb rubber.

A fluororubber wax-melting tray and a cleaning method thereof are disclosed. The fluororubber material of the disclosure is a synthetic polymer elastomer with high temperature resistance, corrosion resistance and low wear resistance. The fluororubber wax-melting tray has the same wax melting effect as the existing ceramic or metal wax melting trays. The shape of the wax melting tray is changed by the external force exerted by pushing the bottom of the fluororubber wax melting tray lightly. When both the external force tending to change the shape of the wax-melting tray and the adsorption force between the wax molecules are greater than the adsorption forces between the fragrance wax and the wax melting tray, the absorption force between a wax piece and the wax melting tray is released, and the whole solidified wax piece can be completely peeled off.

A fluororubber wax-melting tray and a cleaning method thereof are disclosed. The fluororubber material of the disclosure is a synthetic polymer elastomer with high temperature resistance, corrosion resistance and low wear resistance. The fluororubber wax-melting tray has the same wax melting effect as the existing ceramic or metal wax melting trays. The shape of the wax melting tray is changed by the external force exerted by pushing the bottom of the fluororubber wax melting tray lightly. When both the external force tending to change the shape of the wax-melting tray and the adsorption force between the wax molecules are greater than the adsorption forces between the fragrance wax and the wax melting tray, the absorption force between a wax piece and the wax melting tray is released, and the whole solidified wax piece can be completely peeled off.

A modified conjugated diene-based polymer containing: having a weight average molecular weight of 20×10.sup.4 or more and 300×10.sup.4 or less, having a star-branched structure with a conjugated diene-based polymer chain bonded to a modifier residue, wherein the modifier residue has at least 4 silicon atoms, and alkoxy groups and/or hydroxyl groups and the conjugated diene-based polymer chain is bonded to the silicon atom, wherein the number of alkoxy groups and/or hydroxyl groups in the modifier residue is larger than the number of the silicon atoms on average.

Disclosed are new precursors of recyclable cross-linked diene elastomers including chain-end units with furanyl groups, their use in the preparation of the recyclable elastomers and their process of preparation. Also disclosed are new recyclable cross-linked diene elastomers, their preparation process and their uses.

Polymer composition obtained from polymerization of C.sub.5 olefin composition, use for making an adhesive, and article or composite containing it.

The purpose is to provide rubber compositions and pneumatic tires which have reduced changes in tan δ peak temperature over time. The present invention relates to rubber compositions containing at least one copolymer obtained by copolymerizing an aromatic vinyl compound and a conjugated diene compound, the rubber compositions having a heat aging resistance index defined by equation (1) of 0.45 or less.

Halogenated butyl rubbers are provided comprising lignins and co-reinforcing agents, where the ratio of the lignin to the co-reinforcing agent is selected so as to effectively modulate advantageous properties of the vulcanizate. The advantageous properties are achieved when using a ratio of lignin to the co-reinforcing agent, such as carbon black or silica, that is higher than in a reference vulcanizate, in effect the substitution of lignin for conventional reinforcing agents improves the reinforcement of the vulcanizates.

Microbeads are described, comprising silica fibres with needle-shaped morphology of nanometric size, characterised by reduced dustiness and good dispersibility in elastomeric materials, a process for the preparation thereof and the use thereof in the production of vehicle tyres.