To provide a golf ball with excellent abrasion-resistance and resilience. A golf ball of the present invention comprises: a core; and a cover covering the core, wherein the cover is formed of a cover composition containing a (meth)acrylic polymer-modified silicate and a resin component.
1. A golf ball comprising:
a core; and
a cover covering the core,
wherein the cover is formed of a cover composition containing a (meth)acrylic polymer-modified silicate and a resin component,
wherein the (meth)acrylic polymer comprises a (meth)acrylic acid ester having a tertiary amino group as a component,
wherein the (meth)acrylic polymer-modified silicate is a silicate having a layered structure enveloped by a (meth)acrylic polymer, and
wherein the (meth)acrylic polymer-modified silicate, before being mixed with the resin component, comprises a layered silicate having an inter layer spacing of at least 6 nm measured by X-ray diffraction, or having an attributed X-ray diffraction peak that is not detected.
2. The golf ball according to claim 1 , wherein the silicate having the layered structure is at least one selected from a smectite group consisting of montmorillonite, beidellite, nontronite, saponite, ferrous saponite, hectorite, sauconite and stevensite.
3. The golf ball according to claim 1 , wherein the silicate having the layered structure is montmorillonite.
4. The golf ball according to claim 1 , wherein the cover contains 0.01 part to 20 parts by mass of the (meth)acrylic polymer-modified silicate with respect to 100 parts by mass of the resin component.
5. The golf ball according to claim 1 , wherein the resin component contains a thermoplastic polyurethane or an ionomer resin.
6. The golf ball according to claim 1 , wherein the cover composition has a slab hardness of 75 to 98 in Shore A hardness.