Patent ID: 7361101

Claim:
A golf ball comprising: a core comprising a polybutadiene mixture, the core having a diameter ranging from 1.35 inches to 1.64 inches; a boundary layer formed over the core, the boundary layer composed of a thermoplastic material comprising a copolymer of an alpha-olefin and an alpha, beta-unsaturated carboxylic acid, an alpha-olefin and an alkyl acrylate, magnesium stearate, wherein the thermoplastic material is neutralized from 50% to 100%; and a cover injection molded over the boundary layer, the cover material composed of a blend of ionomers with at least one high acid ionomer having an acid content ranging from 17% to 25%, the cover material having a Shore D hardness greater than 60 as measured according to ASTM-D2240, and a thickness ranging from 0.010 inch to 0.050 inch, and wherein the cover layer has a Shore D hardness greater than the Shore D hardness of the boundary layer.