A rubber composition obtained by kneading at least one selected from the group consisting of (A1), (B1), (C1) and (D1), a rubber component and a filler, and a method of improving the viscoelastic property of vulcanized rubber, comprising a first step of kneading at least one selected from the group consisting of (A1), (B1), (C1) and (D1), a rubber component, a filler and a sulfur component and a second step of thermally treating the kneaded material obtained in the previous step.
(A1): a compound represented by formula (I)
(B1): a salt of a compound represented by formula (I)
(C1): a solvate of a compound represented by formula (I)
(D1): a solvate of a salt of a compound represented by formula (I)
A rubber composition obtained by kneading at least one selected from the group consisting of (A1), (B1), (C1) and (D1), a rubber component and a filler, and a method of improving the viscoelastic property of vulcanized rubber, comprising a first step of kneading at least one selected from the group consisting of (A1), (B1), (C1) and (D1), a rubber component, a filler and a sulfur component and a second step of thermally treating the kneaded material obtained in the previous step.
(A1): a compound represented by formula (I)
(B1): a salt of a compound represented by formula (I)
(C1): a solvate of a compound represented by formula (I)
(D1): a solvate of a salt of a compound represented by formula (I).
The present invention aims to provide pneumatic tires that can achieve both abrasion resistance and low heat build-up properties. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing: a rubber component including an isoprene-based rubber and a high-cis polybutadiene rubber having a cis content of 90% by mass or more; one or more types of carbon black; and sulfur, at least one of the one or more types of carbon black being produced from a feedstock oil that has a BMCI value of 150 or less and an aliphatic hydrocarbon content of 30% by mass or more, the BMCI value being calculated from the average boiling point T (°C) and the specific gravity D (60/60°F) relative to water at 60°F according to the equation below, BMCI=48,640/T+273+473.7D−456.8.
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:
wherein A is an aryl group, and the aryl group has at least two polar group, the polar groups may be the same or different; and R1 and R2 are each independently at least one substituent selected from the group consisting of a hydrogen atom, an acyl group, an amide group, an alkyl group, a cycloalkyl group and an aryl group, and the substituent may contain one or more of oxygen, sulfur and nitrogen atoms.
本发明提供了一种用于轮胎的橡胶组合物,具有优异的低发热性能和耐磨性。为实现上述目的,根据本公开的轮胎橡胶组合物是一种橡胶组合物,包括含有二烯橡胶、炭黑和白炭黑的橡胶成分,还包括由式(I)或类似化合物组成的炭黑分散剂,以及汉森溶解度参数(HSP)为 27 或以上的化合物:
其中 A 是芳基,芳基具有至少两个极性基团,极性基团可以相同或不同;R1 和 R2 各自独立地具有至少一个取代基,该取代基选自由氢原子、酰基、酰胺基、烷基、环烷基和芳基组成的组,取代基可以含有一个或多个氧原子、硫原子和氮原子。
Rubber composition and pneumatic tire
申请人:SUMITOMO RUBBER INDUSTRIES, LTD.
公开号:US10414906B2
公开(公告)日:2019-09-17
The present invention aims to provide pneumatic tires that can achieve both abrasion resistance and low heat build-up properties. The present invention relates to a pneumatic tire including a tread formed from a rubber composition, the rubber composition containing: a rubber component including an isoprene-based rubber and a high-cis polybutadiene rubber having a cis content of 90% by mass or more; one or more types of carbon black; and sulfur, at least one of the one or more types of carbon black being produced from a feedstock oil that has a BMCI value of 150 or less and an aliphatic hydrocarbon content of 30% by mass or more, the BMCI value being calculated from the average boiling point T (° C.) and the specific gravity D (60/60° F.) relative to water at 60° F. according to the equation below,
BMCI=48,640/(T+273)+473.7D−456.8.
本发明旨在提供可同时实现耐磨性和低热积聚特性的充气轮胎。本发明涉及一种充气轮胎,包括由橡胶组合物形成的胎面,橡胶组合物包含橡胶成分,包括异戊二烯基橡胶和顺式含量为 90% 或以上的高顺式聚丁二烯橡胶;一种或多种类型的炭黑;以及硫磺,其中至少一种或多种类型的炭黑由 BMCI 值为 150 或以下且脂肪族碳氢化合物含量为 30% 或以上的原料油制成,BMCI 值由平均沸点 T (°C.)和比重 D (°C.)计算得出。)和相对于 60°F 时水的比重 D(60/60°F、
BMCI=48,640/(T+273)+473.7D−456.8.