RUBBER COMPOSITION FOR TIRE, AND PNEUMATIC TIRE

• Main Author: FUJISAWA KOJI
• Format: Patent
• Language: English; Japanese
• Published: 22.01.2015
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; VEHICLE TYRES; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a rubber composition that gives excellent ozone resistance while suppressing discoloration (browning or whitening), and a pneumatic tire using the composition.SOLUTION: The rubber composition for a tire is obtained through a base kneading step of kneading a rubber component, a filler and an anti-ageing agent comprising a compound having an ozone resistant effect and reactivity with a polymer. The content of the above compound is 0.5 to 7.0 parts by mass with respect to 100 parts by mass of the rubber component. 【課題】変色（茶色化、白色化）を抑制しながら、優れた耐オゾン性が得られるゴム組成物、及びこれを用いた空気入りタイヤを提供する。【解決手段】ゴム成分、充填剤、並びに耐オゾン作用及びポリマーとの反応性を有する化合物を含む老化防止剤を混練するベース練り工程を経て得られ、前記ゴム成分１００質量部に対する前記化合物の含有量が０．５〜７．０質量部であるタイヤ用ゴム組成物に関する。【選択図】なし