| 摘要 |
The present invention relates to a golf ball having a ball component made of a material molded under heat from a rubber composition which includes: (A) at least 1 wt % but less than 30 wt % of a modified polybutadiene which is obtained by a modification reaction wherein a polybutadiene having a vinyl content of from 0 to 2%, a cis-1,4 bond content of at least 80% and an active end is modified at the active end with at least one type of alkoxysilane compound, and which has a Mooney viscosity of less than 40, and (B) at least 70 parts by weight of a diene rubber other than ingredient A. The rubber composition additionally includes the following per 100 parts by weight of ingredients A and B combined: (C) from 10 to 50 parts by weight of an unsaturated carboxylic acid and/or a metal salt thereof, (D) from 5 to 80 parts by weight of an inorganic filler, and (E) from 0.1 to 10 parts by weight of an organic peroxide. Golf balls in which such a rubber composition having an excellent workability and improved resilience is used as a ball component exhibit an improved rebound and distance.
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