RUBBER COMPOSITION

PROBLEM TO BE SOLVED: To obtain a rubber composition having improved road-gripping properties, abrasion resistance, flexural resistance and cut resistance, and useful for a tread or the like for a tire by compounding each specific amount of a dienic rubber component, a carbon black and a specific al...

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Bibliographic Details
Main Authors KATAOKA TAKAHIRO, SARASHI HIROTAKA
Format Patent
LanguageEnglish
Published 12.12.2000
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To obtain a rubber composition having improved road-gripping properties, abrasion resistance, flexural resistance and cut resistance, and useful for a tread or the like for a tire by compounding each specific amount of a dienic rubber component, a carbon black and a specific alicyclic hydrocarbon resin. SOLUTION: This rubber composition is obtained by compounding (A) 100 pts.wt. dienic rubber component (e.g. styrene-butadiene rubber), (B) 20-100 pts.wt. carbon black and (C) 5-15 pts.wt. alicyclic hydrocarbon resin containing an unsaturated group (e.g. a compound of the formula). The component C preferably has 360-800 number average molecular weight (Mn), 700-1,600 weight average molecular weight (Mw), 1.8-2.2 Mn/Mw, and 93-109 deg.C softening point. The component B preferably has 40-150 m2/g specific surface are measured by nitrogen adsorption, and 90-140 ml/100 g oil absorption.
Bibliography:Application Number: JP19990162437