Patent ID: 6476147
Filing Date: 2002-11-05
Classification: A63B,C08L

Abstract:
A multi-layer golf ball comprising:a spherical core comprising a silicone material which exhibits, upon curing, a Shore 00 hardness of from about 55 to about 100 and a tensile strength of from about 300 psi to about 600 psi; an inner cover layer molded on said spherical core to form a spherical intermediate core, the inner cover layer comprising a high acid ionomer including at least 16% by weight of an alpha, beta-unsaturated carboxylic acid and having a modulus of from about 15,000 to about 70,000 psi; and an outer cover layer molded over said spherical intermediate ball to form a multi-layer golf ball, the outer cover layer comprising a blend of i) a sodium or zinc salt of a copolymer having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, and ii) a sodium or zinc salt of a terpolymer of an olef having 2 to 8 carbon atomns, acrylic acid and an unsaturated monomer of the acrylate ester class having from 1 to 21 carbon atoms, said outer cover layer having a modulus in a range of about 1,000 to about 30,000 psi.