| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a golf ball excellent in repellency having a good flight performance which can be produced with high productivity by shortening vulcanizing time. <P>SOLUTION: A vulcanized product of a rubber component including (A) a rubber substrate including 60 mass% or more of cis-1,4-combination and polybutadiens having a molecular weight distribution of 2.0-6.0, (B) unsaturated carboxylic acid and/or its metal salt, (C) an inorganic filler, (D) one or more kinds of specific organic peroxides, and (E) dialkyl peroxides is adapted to a constitution member selected from the groups of solid cores of a one-piece golf ball and two-piece golf ball, a sold core of a multi-piece sold golf ball, and a center core of a thread-winding golf ball. The golf ball uses a mixture of single or two or more kinds of specific thermoplastic or thermosetting resin materials as a main material of a cover for covering the core. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
