Golf ball compositions
View Patent ↗Disclosed herein are multilayer golf balls having a layer with a higher Shore C hardness and a lower Shore D hardness than another layer.
1. A golf ball comprising:
a first layer formed from a rubber composition, wherein the rubber composition has a Shore C hardness of 86 or greater and a Shore D hardness of 60 or less, as measured on the surface of a molded 1.55 inch diameter sphere of the rubber composition, and
a second layer formed from a thermoplastic composition comprising an ionomer and a functionalized polyethylene, wherein the thermoplastic composition has a Shore C hardness of less than 86 and a Shore D hardness of greater than 60, as measured on a hardness button formed from the thermoplastic composition,
wherein the Shore C hardness of the rubber composition is greater than the Shore C hardness of the thermoplastic composition, and
wherein the Shore D hardness of the rubber composition is less than the Shore D hardness of the thermoplastic composition.
2. The golf ball of claim 1 , wherein the ionomer has an acid level of 18% or greater.
3. A golf ball consisting essentially of:
a solid, single layer core formed from a rubber composition having a Shore C hardness of 86 or greater and a Shore D hardness of 60 or less, as measured on the surface of a molded 1.55 inch diameter sphere of the rubber composition,
an inner cover layer formed from a thermoplastic composition comprising an ionomer and a functionalized polyethylene, the thermoplastic composition having a Shore C hardness of less than 86 and a Shore D hardness of greater than 60, as measured on a hardness button formed from the thermoplastic composition, and
an outer cover layer,
wherein the Shore C hardness of the rubber composition is greater than the Shore C hardness of the thermoplastic composition, and
wherein the Shore D hardness of the rubber composition is less than the Shore D hardness of the thermoplastic composition.