A rubber composition of the present technology includes: a diene polymer containing a butadiene rubber; and a polyhydric alcohol, a content of the polyhydric alcohol being from 0.5 parts by mass to 14 parts by mass per 100 parts by mass of the diene polymer.

A surface-treating agent for vulcanized rubber, comprising 10 to 160 parts by weight of a wax having a softening point of 40 to 160 C. and 10 to 160 parts by weight of fluororesin particles based on 100 parts by weight of the total amount of isocyanate group-containing 1,2-polybutadiene and an OH group-containing fluororesin composition that has the following formulation: a copolymer [I] of (A) a perfluoroalkylalkyl (meth)acrylate and (B) a hydroxyl group-containing (meth)acrylate, a polymer [II] of an acrylic acid alkyl ester, a polymer [III] of a fluorinated olefin, and a curing agent [IV];
wherein the weight ratio of the isocyanate group-containing 1,2-polybutadiene and the OH group-containing fluororesin composition is 50:50 to 95:5.

A surface-treating agent for vulcanized rubber, comprising 10 to 160 parts by weight of a wax having a softening point of 40 to 160 C. and 10 to 160 parts by weight of fluororesin particles based on 100 parts by weight of the total amount of isocyanate group-containing 1,2-polybutadiene and an OH group-containing fluororesin composition that has the following formulation: a copolymer [I] of (A) a perfluoroalkylalkyl (meth)acrylate and (B) a hydroxyl group-containing (meth)acrylate, a polymer [II] of an acrylic acid alkyl ester, a polymer [III] of a fluorinated olefin, and a curing agent [IV];
wherein the weight ratio of the isocyanate group-containing 1,2-polybutadiene and the OH group-containing fluororesin composition is 50:50 to 95:5.

A coating rubber composition for a conveyer belt, comprising 15 to 75 parts by mass of carbon black having a nitrogen adsorption specific surface area of 50 m.sup.2/g or less, 25 to 100 parts by mass of calcium carbonate and 40 parts or less by mass of an oil per 100 parts by mass of blended rubber comprising of natural rubber and at least one of either butadiene rubber or SBR. The above coating rubber composition for conveyer belts can improve not only the peel force which is a criterion of adhesiveness with the canvas cloth but also the power-saving capability of the conveyer belt while maintaining the durability thereof. Further, compounding of silica in an amount of 5 to 20 parts by mass can achieve a sufficient rubber attachability onto the canvas cloth when over-vulcanized, while maintaining the peel force when subjected to normal vulcanization.

A coating rubber composition for a conveyer belt, comprising 15 to 75 parts by mass of carbon black having a nitrogen adsorption specific surface area of 50 m.sup.2/g or less, 25 to 100 parts by mass of calcium carbonate and 40 parts or less by mass of an oil per 100 parts by mass of blended rubber comprising of natural rubber and at least one of either butadiene rubber or SBR. The above coating rubber composition for conveyer belts can improve not only the peel force which is a criterion of adhesiveness with the canvas cloth but also the power-saving capability of the conveyer belt while maintaining the durability thereof. Further, compounding of silica in an amount of 5 to 20 parts by mass can achieve a sufficient rubber attachability onto the canvas cloth when over-vulcanized, while maintaining the peel force when subjected to normal vulcanization.

Provided is a toner including a toner particle that contains a toner base particle containing a binder resin and a wax, and a coating layer containing a 1,2-polybutadiene resin at the surface of the toner base particle, wherein the coverage ratio of the toner base particle by the coating layer is at least 50%.

A pneumatic tire comprising: an inner liner layer formed from a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer; a coating rubber layer; and a tie rubber layer; the pneumatic tire being configured to effectively prevent separation of the inner liner layer. In a pneumatic tire comprising an inner liner layer formed from a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer, a tie rubber layer, and a coating rubber layer, the coating rubber layer and the inner liner layer are disposed in a manner such that the coating rubber layer and the inner liner layer overlap each other, and a rubber composition in at least a region of the coating rubber layer where the coating rubber layer and the inner liner layer overlap has an adhesion to the inner liner layer.

A pneumatic tire comprising: an inner liner layer formed from a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer; a coating rubber layer; and a tie rubber layer; the pneumatic tire being configured to effectively prevent separation of the inner liner layer. In a pneumatic tire comprising an inner liner layer formed from a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer, a tie rubber layer, and a coating rubber layer, the coating rubber layer and the inner liner layer are disposed in a manner such that the coating rubber layer and the inner liner layer overlap each other, and a rubber composition in at least a region of the coating rubber layer where the coating rubber layer and the inner liner layer overlap has an adhesion to the inner liner layer.

We describe a new approach to fabricate polymeric materials with surface structures for applications as anti-reflective, anti-icing, superhydrophobic, superhydrophilic, de-wetting, and self-cleaning coatings. In some variations, a surface-textured layer comprises first microdomains and second microdomains each containing polymerized cross-linkable photomonomer, where the first microdomains have a higher average cross-link density than that of the second microdomains. The first microdomains and the second microdomains are in a peak-valley surface topology, providing surface texture with no filler particles. In some variations, a method to fabricate a surface-textured layer comprises: applying a cross-linkable photomonomer layer to a reflective substrate; exposing the photomonomer layer to a collimated light beam with no spatial variation, to initiate polymerization in first microdomains; and polymerizing other regions of the photomonomer layer to form second microdomains that are spatially separated from the first microdomains. The first microdomains have a higher average cross-link density compared to the second microdomains.

We describe a new approach to fabricate polymeric materials with surface structures for applications as anti-reflective, anti-icing, superhydrophobic, superhydrophilic, de-wetting, and self-cleaning coatings. In some variations, a surface-textured layer comprises first microdomains and second microdomains each containing polymerized cross-linkable photomonomer, where the first microdomains have a higher average cross-link density than that of the second microdomains. The first microdomains and the second microdomains are in a peak-valley surface topology, providing surface texture with no filler particles. In some variations, a method to fabricate a surface-textured layer comprises: applying a cross-linkable photomonomer layer to a reflective substrate; exposing the photomonomer layer to a collimated light beam with no spatial variation, to initiate polymerization in first microdomains; and polymerizing other regions of the photomonomer layer to form second microdomains that are spatially separated from the first microdomains. The first microdomains have a higher average cross-link density compared to the second microdomains.