Patent ID: 6800695
Filing Date: 2004-10-05
Classification: A63B,C08L

Abstract:
A golf ball having a cover, wherein the cover comprises a blend of 70% by weight of a high stiffness ionomer and 30% by weight of a very low modulus ionomer, wherein said high stiffness ionomer is a copolymer of 75-80% of an olefin with 20-25% of an alpha, beta ethylenically unsaturated carboxylic acid having 10-90% of the carboxylic acid groups neutralized with sodium, lithium, zinc or magnesium ions and has a flexural modulus from about 75,000 to about 120,000 psi and a Shore D hardness of 70 or greater and the very low modulus ionomer is a terpolymer of 67-70% by weight ethylene, 20-23% by weight acrylate and 10% by weight unsaturated carboxylic acid, where 10-90% of the acid groups are neutralized by sodium, zinc or lithium ions and has a flexural modulus from about 2,000 to 8,000 psi and a Shore D hardness of 20-50.