A golf ball providing resistance to abrasion and resistance to wear generally in an excellent balance is formed of a core and a cover arranged to cover the core, the cover being formed of a compound containing relative to 100 parts by mass of a polymer component thereof composed mainly of polybutadiene rubber 1-40 parts by mass of a reinforcement material formed of organic short fiber and 10-40 parts by mass of a metallic salt of α,β-ethylene unsaturated carboxylic acid. It is characterized in that the organic short fiber is suitably a ternary composite formed of a rubber component, a polyolefin component and a nylon component and the metallic salt of α,β-ethylene unsaturated carboxylic acid is suitably zinc acrylate, zinc methacrylate, magnesium acrylate or magnesium methacrylate.
1. A golf ball formed of a core and a cover arranged to cover said core, wherein said cover is formed of a compound containing relative to 100 parts by mass of a polymer component thereof composed mainly of polybutadiene rubber, 1-30 parts by mass of a reinforcement material formed of organic short fiber and 10-40 parts by mass of a metallic salt of α,β-ethylene unsaturated carboxylic acid, wherein said organic short fiber is a ternary composite formed of a rubber component, a polyolefin component and a nylon component.
2. The golf ball of claim 1 , wherein said metallic salt of α,β-ethylene unsaturated carboxylic acid is zinc acrylate, zinc methacrylate, magnesium acrylate or magnesium methacrylate.
3. The golf ball of claim 1 , wherein the metallic salt of α,β-ethylene unsaturated carboxylic acid is present in an amount of 15-30 parts by mass.
4. The golf ball of claim 1 , wherein the reinforcement material is present in an amount of 2-25 parts by mass.
5. The golf ball of claim 1 , wherein the reinforcement material is present in an amount of 5-20 parts by mass.
6. The golf ball of claim 1 , wherein the organic short fiber has a length in the range of 5 μm-10 mm and a diameter in the range of 0.5 to 100 μm.
7. The golf ball of claim 1 , wherein the organic short fiber has a length in the range of 100 μm-5 mm and a diameter in the range of 1 to 30 μm.