Golf balls comprising polyaspartic esters
View Patent ↗A golf ball comprising a core and at least one layer formed about the core is disclosed. The layer may be composed of a material formed from reactants comprising at least one polyisocyanate and at least one polyaspartic ester, such as N,N′-di(ethylmaleate-amino)-dicyclohexylmethane, N,N′-di(ethylmaleate-amino)-dimethyl-dicyclohexylmethane, N,N′-diethylmaleate-2-methyl-pentamethylene diamine, or a blend thereof. The layer may be an intermediate layer, an outer cover layer, or a coating layer.
1. A golf ball comprising:
a core; and
at least one layer formed about the core, wherein the layer is composed of a material formed from reactants comprising at least one polyisocyanate, at least one polyaspartic ester, and 4,4′-bis(sec-butylamino)-dicyclohexylmethane.
2. A golf ball comprising:
a core; and
at least one layer formed about the core, wherein the layer is composed of a material formed from reactants comprising at least one polyisocyanate and at least one polyaspartic ester, wherein the layer is an outer cover layer.
3. The golf ball of claim 2 , wherein the golf ball further comprises an intermediate layer disposed between the core and the outer cover layer.
4. The golf ball of claim 2 , wherein the layer has a thickness of 0.005 inches to 0.05 inches, a Shore D hardness of 30 to 70, or a flexural modulus of 10,000 psi to 80,000 psi.
5. The golf ball of claim 2 , wherein the core comprises a center and one or more outer core layer.
6. The golf ball of claim 2 , wherein the core has a diameter of 1.5 inches to 1.65 inches, or a compression of 40 to 100.
7. The golf ball of claim 3 , wherein the intermediate layer has a thickness of 0.005 inches to 0.6 inches, or a Shore D hardness of 20 to 80.
8. The golf ball of claim 2 , wherein the golf ball has a coefficient of restitution of 0.8 or greater, or a compression of 50 to 90.
9. The golf ball of claim 2 , wherein the material is a castable material.
10. The golf ball of claim 2 , wherein the reactants further comprises a diol, a triol, a tetraol, or a diamine.
11. The golf ball of claim 2 , wherein the reactants are substantially saturated.
12. The golf ball of claim 2 , wherein the polyisocyanate comprises a polyurethane prepolymer or a polyurea prepolymer.
13. The golf ball of claim 2 , wherein the polyisocyanate comprises m-tetramethylxylene diisocyanate, p-tetramethylxylene diisocyanate, 3,3′-dimethyl-4,4 ′-biphenylene diisocyanate, 2,2′-diphenylmethane diisocyanate, 3,3′-dimethyl-4,4′-diphenylmethane diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,6-methylcyclohexane diisocyanate, or a blend thereof.
14. A golf ball comprising:
a core, the core having a diameter of 1.55 inches to 1.65 inches and a first coefficient of restitution of 0.8 or greater;
an intermediate layer disposed about the core, the intermediate layer having a first Shore D hardness of 20 to 80 and comprising a blend of two or more ionomers;
an outer cover layer disposed about the intermediate layer; the outer cover layer having a thickness of 0.005 inches to 0.05 inches and a second Shore D hardness of 30 to 70; and
a coating layer, wherein the golf ball has a second coefficient of restitution of 0.8 or greater and a compression of 50 to 120, and at least one of the outer cover layer and the coating layer is composed of a material formed from reactants comprising at least one polyisocyanate and at least one polyaspartic ester selected from the group consisting of N,N′-di(ethylmaleate-amino)-dicyclohexylmethane, N,N′-di(ethylmaleate-amino)-dimethyl-dicyclohexylmethane, and N,N′-diethylmaleate-2-methyl-pentamethylene diamine.
15. The golf ball of claim 14 , wherein the core comprises a center and one or more outer core layers.