A golf ball has a core, and a cover for covering the core. The cover contains 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a base resin composing the cover, and the titanium oxide is surface-treated with an oxide including at least one element selected from the group consisting of aluminum, silicon, zinc, zirconium, tin, and cerium, and/or a hydrate thereof The golf ball has less or no discoloration or degradation with time, and has superior weatherability.
1. A golf ball comprising:
a core; and
a cover for covering the core,
the cover containing 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a base resin composing the cover, wherein
the titanium oxide is surface-treated with an oxide including at least one element selected from the group consisting of aluminum, silicon, zinc, zirconium, tin, and cerium, and/or a hydrate thereof.
2. The golf ball according to claim 1 , wherein the titanium oxide is surface-treated with at least one selected from the group consisting of a silicon oxide, a zirconium oxide, an aluminum oxide, and a hydrate thereof.
3. The golf ball according to claim 1 , further comprising a single-layered coat.
4. A golf ball comprising:
a core; and
a cover for covering the core,
the cover containing 0.5 to 10 parts by mass of a titanium oxide relative to 100 parts by mass of a base resin composing the cover, wherein
the titanium oxide is surface-treated with an oxide including at least one element selected from the group consisting of zirconium, tin, and cerium, and/or a hydrate thereof.
5. A golf ball according to claim 1 , wherein the oxide used to surface-treat the titanium oxide is an oxide and/or hydrate of aluminum.
6. A golf ball according to claim 1 , wherein the oxide used to surface-treat the titanium oxide is an oxide and/or hydrate of silicon.
7. A golf ball according to claim 1 , wherein the oxide used to surface-treat the titanium oxide is an oxide and/or hydrate of zinc.
8. A golf ball according to claim 1 , wherein the oxide used to surface-treat the titanium oxide is an oxide and/or hydrate of zirconium.
9. A golf ball according to claim 1 , wherein the oxide used to surface-treat the titanium oxide is an oxide and/or hydrate of tin.
10. A golf ball according to claim 1 , wherein the oxide used to surface-treat the titanium oxide is an oxide and/or hydrate of cerium.