SAFETY TIRE, FOAM ACRYLONITRILE POLYMER COMPOSITION USED THEREFOR, AND MANUFACTURING METHOD OF SAFETY TIRE

摘要

PROBLEM TO BE SOLVED: To provide a safety tire enabling stable traveling even in a flawed condition of a tire without sacrificing rolling resistance and ride comfort during normal traveling before the tire flaws. SOLUTION: A composite comprised of continuous phase of resin and independent bubbles is arranged inside of hollow doughnut-like tire. A bubble content by percent of the composite is 80.00 to 98.75 vol.%, internal pressure of the bubbles at 25 deg.C is controlled below 150 kPa, and the continuous phase of the composite is made of acrylonitrile polymer.