RUBBER COMPOSITION FOR GOLF BALL AND GOLF BALL

PROBLEM TO BE SOLVED: To provide a rubber composition for golf balls capable of manufacturing golf balls with excellent repulsive elasticity. SOLUTION: This rubber composition for golf balls includes a rubber component including 30-100 wt.% of conjugated diene polymer having 1, 2-vinyl bond content of 0.5% or less and cis-1, 4 bond content of 98.5% or more, and having a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to a number-average molecular weight measured by gel permeation chromatography, of 3.5 or less, and inorganic filler, wherein the inorganic filler is contained 5-80 pts.wt relative to the rubber component of 100 pts.wt. COPYRIGHT: (C)2008,JPO&INPIT