Multi-layer golf ball and composition

A multi-layer golf ball comprising:

• a core;
• a cover layer;
• and
• a mantle layer disposed between the core and the cover;
• wherein the cover layer is formed of a composition comprising:
• (1) greater than about 40 parts by weight of a first ionomer resin being a copolymer of 16 to 35 percent by weight of an alpha, beta-unsaturated carboxylic acid and 84 to 65 percent by weight of an olefin, wherein about 10 to about 90 percent of the carboxyl groups of the copolymer are neutralized with a metal ion;
• (2) greater than 40 parts by weight of a second ionomer resin being a copolymer of 13 to 15 percent by weight of an alpha, beta-unsaturated carboxylic acid and an olefin, wherein about 10 to about 90 percent of the carboxyl groups of the copolymer are neutralized with a metal ion;
• and (3) about 2 to about 15 parts by weight of a third ionomer resin being a terpolymer of 9 to 12 percent by weight of an alpha, beta-unsaturated carboxylic acid, 1 to 50 percent by weight n-alkyl acrylate or methacrylate and 38 to 90 percent by weight of an olefin, wherein about 10 to about 90 percent of the carboxyl groups of the terpolymer are neutralized with a metal ion.

A multi-layer golf ball comprising:

• a core;
• a cover layer;
• and
• a mantle layer disposed between the core and the cover;
• wherein the cover layer consists essentially of three ionomer resins, including a first ionomer resin being a copolymer of 16 to 35 percent by weight of an alpha, beta-unsaturated carboxylic acid and 84 to 65 percent by weight of an olefin, wherein about 10 to about 90 percent of the carboxyl groups of the copolymer are neutralized with a metal ion;
• a second ionomer resin being a copolymer of 13 to 15 percent by weight of an alpha, beta-unsaturated carboxylic acid and an olefin, wherein about 10 to about 90 percent of the carboxyl groups of the copolymer are neutralized with a metal ion;
• and a third ionomer resin being a terpolymer of 9 to 12 percent by weight of an alpha, beta-unsaturated carboxylic acid, 1 to 50 percent by weight n-alkyl acrylate or methacrylate and 38 to 90 percent by weight of an olefin, wherein about 10 to about 90 percent of the carboxyl groups of the terpolymer are neutralized with a metal ion;
• and
• wherein the first ionomer resin is present in an amount greater than about 40 parts by weight of the cover layer, the second ionomer resin is present in an amount of greater than about 40 parts by weight of the cover layer and the third ionomer resin is present in an amount of less than about 15 parts by weight of the cover layer;
• and
• wherein the mantle layer comprises a thermoplastic material, the thermoplastic material consisting essentially of polyetherester block copolymer.