Abstract: Provided is a rubber composition comprising: a rubber component containing diene-based rubber; a filler, and a compound represented by formula (I) below: (wherein: A is an aryl group and has at least two polar groups, which may be the same or different from each other; R1 and R2 are each independently at least one substituent selected from a group consisting of a hydrogen atom, an acyl group, an amide group, an alkyl group, a cycloalkyl group, and an aryl group; and further, the substituent may include one or more of O, S, and N atoms), so as to provide a rubber composition excellent in low heat generating property and wear resistance.

Abstract: An additive for rubber that enables a rubber composition to have excellent low heat generating property and processability, a rubber composition containing the additive for rubber, and a tire using the same are provided.

Abstract: A rubber composition that is capable of providing vulcanized rubber excellent in the abrasion resistance without the deterioration of the crack resistance and the low heat generation property is provided. The rubber composition contains: (A) a rubber component; (B) carbon black having a CTAB specific surface area of 110 to 160 m2/g, a half value width ?D50 of a peak including a Stokes equivalent diameter Dst obtained by a centrifugal sedimentation method of 60 nm or less, and ?D50/Dst of 0.95 or less; and (C) silica having a CTAB specific surface area of 200 m2/g or more, has a total amount of a content (b) of the carbon black (B) and a content (c) of the silica (C) of 30 to 80 parts by mass per 100 parts by mass of the rubber component (A), and has (b)/(c) of (60 to 85)/(40 to 15).

Abstract: An additive for rubber that enables a rubber composition to have excellent low heat generating property and processability, a rubber composition containing the additive for rubber, and a tire using the same are provided.

Abstract: Provided is a rubber composition capable of providing a vulcanized rubber excellent in fracture resistance, crack resistance, and low heat generation property. The rubber composition comprises a rubber component (A), a carbon black (B) having a CTAB specific surface area of 30-110 m2/g and a silica (C) having a CTAB specific surface area of 200 m2/g or larger. The total amount of the amount (b) of the carbon black (B) and the amount (c) of the silica (C) is 30-80 parts by mass relative to 100 parts by mass of the rubber component (A), and (b):(c)=(70-85):(30-15).

Abstract: A rubber composition that is capable of providing vulcanized rubber excellent in the abrasion resistance without the deterioration of the crack resistance and the low heat generation property is provided. The rubber composition contains: (A) a rubber component; (B) carbon black having a CTAB specific surface area of 110 to 160 m2/g, a half value width ?D50 of a peak including a Stokes equivalent diameter Dst obtained by a centrifugal sedimentation method of 60 nm or less, and ?D50/Dst of 0.95 or less; and (C) silica having a CTAB specific surface area of 200 m2/g or more, has a total amount of a content (b) of the carbon black (B) and a content (c) of the silica (C) of 30 to 80 parts by mass per 100 parts by mass of the rubber component (A), and has (b)/(c) of (60 to 85)/(40 to 15).

Abstract: There is provided a rubber composition for a tire excellent in the low heat generating property and abrasion resistance. To achieve the above object, the rubber composition for a tire according to the present disclosure is a rubber composition comprising a rubber component containing a diene rubber, a carbon black, and a silica, and further comprising a carbon black dispersant composed of a compound represented by the formula (I) or the like, and a compound having a Hansen solubility parameter (HSP) of 27 or more.

Abstract: Provided is a rubber composition comprising: a rubber component containing diene-based rubber; a filler, and a compound represented by formula (I) below: (wherein: A is an aryl group and has at least two polar groups, which may be the same or different from each other; R1 and R2 are each independently at least one substituent selected from a group consisting of a hydrogen atom, an acyl group, an amide group, an alkyl group, a cycloalkyl group, and an aryl group; and further, the substituent may include one or more of O, S, and N atoms), so as to provide a rubber composition excellent in low heat generating property and wear resistance.

Abstract: Provided is a rubber composition that, when adopted in a tire member such as a tread, displays low heat generation, high abrasion resistance, and high cut resistance, and enables excellent fatigue cracking resistance to be realized. The rubber composition contains carbon black that satisfies relationship formulae (1) to (3), shown below. 62.5×24M4DBP+hydrogen amount of carbon black?8337.5??(1) 24M4DBP?0.25×CTAB?62.5??(2) Dst+0.75×?D50?152.5??(3).

Abstract: Provided is a rubber composition that, when adopted in a tire member such as a tread, displays low heat generation, high abrasion resistance, and high cut resistance, and enables excellent fatigue cracking resistance to be realized. The rubber composition contains carbon black that satisfies relationship formulae (1) to (3), shown below. 62.5×24M4DBP+hydrogen amount of carbon black?8337.5 ??(1) 24M4DBP?0.25×CTAB?62.5 ??(2) Dst+0.75×?D50?152.

Abstract: The present invention relates to a method for predicting a deformation behavior of a rubber material capable of accurately analyzing a deformation behavior of a rubber material even in a micro level, and more specifically, to a method for predicting a deformation behavior of a rubber material, including: generating a three-dimensional model of the rubber material formed by adding a filler to a rubber; applying a configuration condition specifying a relationship between a stress and a strain on the basis of thickness information and temperature information obtained on the basis of a molecular dynamics approach to a rubber layer portion constituting the three-dimensional model; and, analyzing the deformation behavior of the rubber material.

Abstract: The present invention relates to a method for predicting a deformation behavior of a rubber material capable of accurately analyzing a deformation behavior of a rubber material even in a micro level, and more specifically, to a method for predicting a deformation behavior of a rubber material, including: generating a three-dimensional model of the rubber material formed by adding a filler to a rubber; applying a configuration condition specifying a relationship between a stress and a strain on the basis of thickness information and temperature information obtained on the basis of a molecular dynamics approach to a rubber layer portion constituting the three-dimensional model; and, analyzing the deformation behavior of the rubber material.