RUBBER COMPOSITION FOR SHOULDER PAD AND PNEUMATIC TIRE

PROBLEM TO BE SOLVED: To provide a rubber composition for a shoulder pad whose breaking resistance characteristics, fatigue resistance characteristics and cutting resistance properties are improved with a good balance while keeping low exothermic properties, and to provide a pneumatic tire with impr...

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Bibliographische Detailangaben
1. Verfasser:	UNO HITOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a rubber composition for a shoulder pad whose breaking resistance characteristics, fatigue resistance characteristics and cutting resistance properties are improved with a good balance while keeping low exothermic properties, and to provide a pneumatic tire with improved durability.SOLUTION: The rubber composition for the shoulder pad containing carbon black satisfies the following (1)-(4). (1) Dibutyl phthalate (DBP) absorption (ml/100 g) is 90-180, (2) the difference between the BET specific surface area (BET5) (m/g) and the external specific surface area (STSA) (m/g) is 5≤(BET5)-(STSA)≤12, (3) the ratio of the stokes diameter (Dst) of the carbon black and the stokes diameter distribution ( D-50 (half value width)) is 0.70≤( D-50)/(Dst)≤1.10, and (4) the ratio of BET specific surface area (BET5) (m/g) to the iodine adsorption (IA) (mg/g) is 1.05≤(BET5)/(IA)≤1.35.