| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition for a solid tire able to make a hydrolytic stability high under suppressing a crack generation which comes from an external force as a main cause at a tread part and to provide the solid tire. SOLUTION: The composition for the solid tire contains a polyurethane prepolymer which is a reaction product of a polycaprolactone type ester glycol and p-phenylene diisocyanate. The solid tire has a wheel and a tread part covering the outer periphery of the wheel, and the tread part is made from a raw material composition containing a polyurethane type prepolymer. The polyurethane type prepolymer is a reaction product of the polycaprolactone type ester glycol with p-phenylene diisocyanate. COPYRIGHT: (C)2008,JPO&INPIT
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