Patent ID: 6224498
Filing Date: 2001-05-01
Classification: A63B,C08L

Abstract:
A golf ball comprising:a core;an inner cover layer having a Shore D hardness of 60 or more molded on said core, the inner cover layer comprising a blend of two or more low acid ionomer resins containing no more than 16% by weight of an alpha, beta-unsaturated carboxylic acid; andfurther wherein the inner cover layer comprises a low flexural modulus ionomer resin which includes a blend of a hard high modulus ionomer with a soft low modulus ionomer, the high modulus ionomer being a metal salt of a copolymer having from 2 to 8 carbon atoms and an unsaturated monocarboxylic acid having from 3 to 8 carbon atoms, the low modulus ionomer being a metal salt of a terpolymer of an olefin having 2 to 8 carbon atoms, acrylic acid an an unsaturated monomer of the acrylate ester class having from 1 to 21 carbon atoms,an outer cover layer having a Shore D hardness of 64 or less 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, and wherein said Shore D hardness of the outer cover layer is less than the Shore D hardness of the inner cover layer.