Coated golf ball
View Patent ↗The present invention provides a coated golf ball having good appearance, excellent durability after repeated hitting, excellent abrasion resistance after washing by brushing and excellent stain resistance with a grass. The present invention relates to a coated golf ball formed by applying a paint on the surface of a golf ball body, wherein the paint comprises polyol containing urethane polyol as a main material and polyisocyanate curing agent, and the curing agent comprises 25 to 35% by weight of isocyanurate polyisocyanate derived from hexamethylene diisocyanate, 25 to 35% by weight of biuret polyisocyanate derived from hexamethylene diisocyanate and 35 to 50% by weight of isocyanurate polyisocyanate derived from isophorone diisocyanate.
1. A coated golf ball formed by applying a paint on the surface of a golf ball body, wherein the paint comprises polyol containing urethane polyol as a main material and polyisocyanate curing agent, and the curing agent comprises 25 to 35% by weight of isocyanurate polyisocyanate derived from hexamethylene diisocyanate, 25 to 35% by weight of biuret polyisocyanate derived from hexamethylene diisocyanate and 35 to 50% by weight of isocyanurate polyisocyanate derived from isophorone diisocyanate.
2. The coated golf ball according to claim 1 , wherein the paint is formed from the main material and curing agent such that an equivalent ratio (NCO/OH) of isocyanate group in the curing agent to hydroxyl group in the main material is within the range of 1.0 to 1.5.
3. The coated golf ball according to claim 1 , wherein the paint has a single-layered structure.
4. The coated golf ball according to claim 1 , wherein the curing agent comprises 26 to 34% by weight of isocyanurate polyisocyanate derived from hexamethylene diisocyanate, 26 to 34% by weight of biuret polyisocyanate derived from hexamethylene dissocyanate and 37 to 48% by weight of isocyanurate polyisocyanate derived from isophorone diisocyanate.
5. The coated golf ball according to claim 1 , wherein the curing agent comprises 27 to 33% by weight of isocyanurate polyisocyanate derived from hexamethylene diisocyanate, 27 to 33% by weight of biuret polyisocyanate derived from hexamethylene diisocyanate and 39 to 46% by weight of isocyanurate polyisocyanate derived from isophorone diisocyanate.
6. The coated golf ball according to claim 1 , wherein the paint is formed from the main material and curing agent such that an equivalent ratio (NCO/OH) of isocyanate group in the curing agent to hydroxyl group in the main material is within the range of 1.1 to 1.4.
7. The coated golf ball according to claim 2 , wherein the paint has a single-layered structure.
8. The coated golf ball according to claim 6 , wherein the paint has a single-layered structure.
9. The coated golf ball according to claim 1 , wherein the paint layer has a thickness of 6 to 25 μm.
10. The coated golf ball according to claim 1 , wherein the paint layer has a thickness of 8 to 20 μm.