| 摘要 |
PROBLEM TO BE SOLVED: To provide a carbon black-reinforced rubber composition which contains hydrophilic sorbitan monostearate and specialized tackifying resin, and a pneumatic tire having a visually oservable rubber component, such as, for example, a rubber side wall, of the rubber composition. SOLUTION: The surface of the rubber composition, for example, the tire sidewall rubber component, in its uncured state contains the hydrophilic sorbitan monostearate on its surface together with the specialized tackifying resin to promote enhanced building tack and thereby counteract building tack loss by the sorbitan monostearate having been exposed to moisture (moisture exposed surface) during the processing of the rubber composition, particularly after its high shear processing such as, for example, extrusion. COPYRIGHT: (C)2009,JPO&INPIT
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