Patent ID: 8063145

Claim:
A golf ball comprising a core and a cover covering the core, wherein the cover contains a mixture of a copolymer polyester resin and an ionomer resin as a resin component and an expoxy group modified methacrylic resin as a compatibilizer; wherein the copolymer polyester resin has, as a constitutional components, a dicarboxylic acid, a diol, and a hydroxyl carboxylic acid, and at least one of the dicarboxylic acid, the diol, and the hydroxyl carboxylic acid is a non-petroleum based material, wherein the copolymer polyester resin is composed of succinic acid as the dicarboxylic acid, butanediol as the diol, and lactic acid as the hydroxyl carboxylic acid; and, the copolymer polyester resin has slab hardness of 70 or less in shore D hardness.