Thick inner cover multi-layer golf ball
View Patent ↗A golf ball including a core having a diameter of 0.5 inches to 1.4 inches, a compression of about 45 or less; and a coefficient of restitution of from 0.730 to 0.810; a cast polyurea cover; and an intermediate layer disposed between the core and the cover, the intermediate layer having a thickness of 0.11 inches or greater and being formed from a composition including a highly-neutralized acid polymer having a moisture vapor transmission rate of 8 g·mil/100 in 2 /day or less; wherein a combination of the core and the intermediate layer results in a compression of from about 70 to about 100, and the golf ball has a coefficient of restitution of from 0.805 to 0.820 when measured at an incoming velocity of 125 ft/s and greater than 0.75 when measured at an incoming velocity of 160 ft/s, and a compression of from 75 to 105.
1. A golf ball comprising:
a core having a diameter of 0.5 inches to 1.4 inches, a compression of about 45 or less; and a coefficient of restitution of from 0.730 to 0.810;
a cast polyurea cover; and
an intermediate layer disposed between the core and the cover, the intermediate layer having a thickness of 0.11 inches or greater and being formed from a composition comprising a highly-neutralized acid polymer having a moisture vapor transmission rate of 8 g·mil/100 in 2 /day or less;
wherein a combination of the core and the intermediate layer results in a compression of from about 70 to about 100, and the golf ball has a coefficient of restitution of from 0.805 to 0.820 when measured at an incoming velocity of 125 ft/s and greater than 0.75 when measured at an incoming velocity of 160 ft/s, and a compression of from 75 to 105.
2. The golf ball of claim 1 , wherein the core diameter is 1.3 inches to 1.4 inches.
3. The golf ball of claim 2 , wherein the core diameter is 1.380 inches to 1.387 inches.
4. The golf ball of claim 1 , wherein the coefficient of restitution of the core is 0.774 to 0.805.
5. The golf ball of claim 1 , wherein the intermediate layer thickness is 0.115 inches to 0.119 inches.
6. The golf ball of claim 1 , wherein the intermediate layer hardness is 55 Shore D to 70 Shore D.
7. The golf ball of claim 1 , wherein the cast polyurea cover has a hardness of 40 Shore D to 60 Shore D.
8. The golf ball of claim 1 , wherein the core comprises a halogenated thiophenol present in an amount of 0.01 pph to 5 pph.
9. The golf ball of claim 8 , wherein the halogenated thiophenol is present in an amount of 2.3 pph to 5 pph.
10. The golf ball of claim 1 , wherein the highly-neutralized acid polymer is neutralized by a metal cation selected from the group consisting of Na; Zn; Mg; Li; Ca; Ba; Pb; Al; and K metal cations.
11. The golf ball of claim 1 , wherein a combination of the intermediate layer and the core has a coefficient of restitution of 0.810 to 0.820 when measured at an incoming velocity of 125 ft/s.
12. The golf ball of claim 1 , wherein the combination of the intermediate layer and the core has a compression of 70 to 100.
13. The golf ball of claim 12 , wherein the combination of the intermediate layer and the core has a compression of 72 to 90.
14. The golf ball of claim 1 , wherein the core comprises a center and an outer core layer comprising a halogenated thiophenol.
15. The golf ball of claim 14 , wherein the halogenated thiophenol in the outer core layer is present in an amount of 0.01 pph to 5 pph.
16. A golf ball comprising:
a core comprising a center and an outer core layer, the combination of the center and the outer core layer having a diameter of 0.5 inches to 1.4 inches, a compression of 45 or less, and a coefficient of restitution of 0.730 to 0.810;
a cast polyurea cover; and
an intermediate layer disposed between the core and the cover, the intermediate layer having a thickness of 0.11 inches or greater and being formed from a composition comprising a highly neutralized acid polymer having a moisture vapor transmission rate of 8 g·mil/100 in 2 /day or less;
wherein a combination of the core and the intermediate layer results in a compression of 70 to 100, and the golf ball has a coefficient of restitution of 0.805 to 0.820 when measured at an incoming velocity of 125 ft/s and greater than 0.75 when measured at an incoming velocity of 160 ft/s, and a compression of 75 to 105.
17. The golf ball of claim 16 , wherein at least one of the center or outer core layers comprises a halogenated thiophenol.
18. A golf ball comprising:
a core having a diameter of 0.5 inches to 1.55 inches, a compression of about 45 or less; and a coefficient of restitution of from 0.730 to 0.810;
a cast polyurea cover; and
an intermediate layer disposed between the core and the cover, the intermediate layer having a thickness of 0.11 inches or greater and being formed from a composition comprising a highly-neutralized acid polymer having a moisture vapor transmission rate of 8 g·mil/100 in 2 /day or less;
wherein a combination of the core and the intermediate layer results in a compression of from about 70 to about 100, and the golf ball has a coefficient of restitution of from 0.805 to 0.820 when measured at an incoming velocity of 125 ft/s and greater than 0.75 when measured at an incoming velocity of 160 ft/s, and a compression of from 75 to 105.