| abstract |
(57) Abstract: [PROBLEMS] To provide a rubber thread for a golf ball, which is excellent in aging resistance and resilience. According to the present invention, the retention of tensile strength after aging at 70 ° C. for 7 days is 70% or more, and the hysteresis loss at constant stress extension of 100 kg / cm 2 is 50% or less. cm 2 The present invention relates to a rubber thread for a golf ball, which has an elongation at constant stress elongation of 900 to 1400%. |