Patent ID: 6221960
Filing Date: 2001-04-24
Classification: A63B,C08L

Abstract:
A golf ball having a coefficient of restitution of greater than about 0.7 and a compression of at least about 50 comprising a core and a cover disposed concentrically about the core with the cover having a thickness of at least about 0.03 inches and at least about 60 percent dimple coverage, wherein at least one of the cover and the core is formed of a composition which comprises an anionic polymer having a flexural modulus from about 500 psi to 300,000 psi, a hardness of at least about 15 Shore A, a specific gravity of at least about 0.7, a dynamic shear storage modulus of at least about 10.sup.4 dyn/cm.sup.2 at about 23.degree. C., a loss tangent of less than about 1 at about 23.degree. C., and having at least one of a neutralizable hydroxyl or a deacetylable or dealkylable ether group, wherein at least a portion of the neutralizable or deacetylable or dealkylable groups are neutralized with a metal ion and wherein the composition further comprises at least one additional polymer comprising polyvinyl alcohol, or a copolymer of ethylene and vinyl alcohol, present in an amount of about 1 to 99 percent by weight of the composition.