Patent ID: 6407176
Filing Date: 2002-06-18
Classification: A63B,C08L

Abstract:
A golf ball having a Coefficient of Restitution of equal to or greater than 0.810 comprising a core and a cover, wherein said cover comprises:from about 90 to about 10 percent by weight of a hard ionomer which is a sodium or zinc salt of the copolymer of an olefin having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, wherein said hard ionomer has a hardness greater than 50 on the Shore D scale and a flexural modulus of from about 15,000 to about 70,000 psi; and, from about 10 to about 90 percent by weight of an acrylic acid based soft ionomer which is a sodium or zinc salt of a terpolymer of ethylene, acrylic acid, and methyl acrylate, wherein said soft ionomer has a hardness from about 30 to about 40 on the Shore D scale and a flexural modulus of from about 3,000 to 7,000 psi.