Patent ID: 6419594
Filing Date: 2002-07-16
Classification: A63B,B29C,B29K,B29L,C08K,C08L

Abstract:
A golf ball comprising:a core formed from a composition including (i) a first polybutadiene, said first polybutadiene polymerized in the presence of a cobalt or nickel-based catalyst, said polybutadiene prior to curing, having a Mooney viscosity of from about 65 to about 85, (ii) a second polybutadiene, said second polybutadiene polymerized in the presence of a neodymium or lanthanide series catalyst, and (iii) a metallic filler material serving to increase the density of said core; an inner cover layer molded about said core, the inner cover layer comprising a high acid ionomer including at least 16 percent by weight of an alpha, beta-unsaturated carboxylic acid; and an outer cover layer molded on said inner cover layer, said outer cover layer comprising a relatively soft polymeric material selected from the group consisting of low flexural modulus ionomer resins and non-ionomeric thermoplastic elastomers.