Tire
AssigneeBridgestone Corporation
InventorsHiroyuki Fudemoto, Atsuko Honjyo, Tong Gao
Life of this patent
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Abstract
A tire includes a round tire frame made of a resin material, and the resin material includes a thermoplastic polyamide-based elastomer including an ester bond within a molecule thereof. The thermoplastic polyamide-based elastomer has a ratio by mass (HS/SS) of hard segment (HS) to soft segment (SS) of from 54/46 to 90/10.
Claims6
A tire comprising a round tire frame made of a resin material, the resin material including a thermoplastic polyamide-based elastomer including an ester bond within a molecule thereof, and the thermoplastic polyamide-based elastomer including a hard segment and a soft segment, and having a ratio by mass (HS/SS) of the hard segment (HS) to the soft segment (SS) of from 54/46 to 88/12,
- the hard segment (HS) including a polyamide 12 represented by —[CO—(CH2)11—NH],
- the soft segment (SS) being formed from a diol compound having a hydroxyl group at both terminals thereof,
- wherein a chain extender, which is a dicarboxylic acid selected from the group consisting of adipic acid and decanedicarboxylic acid, connects the hard segment and the soft segment, and
- the ester bond is formed between a hydroxyl group of the diol compound and a carboxyl group of the dicarboxylic acid.
Dependencies are inferred from the claim text.