PROBLEM TO BE SOLVED: To provide a rubber composition for tire good in both of low heat generation property and abrasion resistance when it is made a tire, a manufacturing method of the rubber composition for tire and a pneumatic tire.SOLUTION: The rubber composition for tire contains a diene rubber (A) and a fine particle (B), where the diene rubber (A) contains a natural rubber of 60 to 100 mass%, and the fine particle (B) contains a non-diene polymer non-compatible with the diene rubber (A) and a diene rubber compatible with the diene rubber (A), and has a core-shell structure constituted of a core part containing the non-diene polymer of predetermined amount and a shell part containing the diene polymer of predetermined amount. In the rubber composition, the non-diene polymer of the core part is bonded to the diene polymer of the shell part by a chemical bond, the average particle diameter of the fine particle (B) is 0.001 to 100 μm, and content of the fine particle (B) is 1 to 30 pts.mass based on 100 pts.mass of the diene rubber (A).SELECTED DRAWING: None
【課題】本発明の課題は、タイヤにしたときに低発熱性および耐摩耗性がいずれも良好となるタイヤ用ゴム組成物、タイヤ用ゴム組成物の製造方法および空気入りタイヤを提供することである。【解決手段】本発明のタイヤ用ゴム組成物は、ジエン系ゴム(A)と微粒子(B)とを含有し、ジエン系ゴム(A)が天然ゴムを60〜100質量%含み、微粒子(B)がジエン系ゴム(A)と相溶しない非ジエン系ポリマーとジエン系ゴム(A)と相溶するジエン系ポリマーとを含み、非ジエン系ポリマーを所定量含有するコア部分とジエン系ポリマーを所定量含有するシェル部分とから構成されたコアシェル構造であり、コア部分の非ジエン系ポリマーとシェル部分のジエン系ポリマーが化学結合で結合しており、微粒子(B)の平均粒子径が0.001〜100μmであり、微粒子(B)の含有量がジエン系ゴム(A)100質量部に対して1〜30質量部である。【選択図】なし
RUBBER COMPOSITION FOR TIRE, MANUFACTURING METHOD OF RUBBER COMPOSITION FOR TIRE, AND PNEUMATIC TIRE
タイヤ用ゴム組成物、タイヤ用ゴム組成物の製造方法および空気入りタイヤ
2017-06-15
Patent
Electronic Resource
Japanese
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