Patent ID: 8883923

Claim:
A golf ball comprising a core and a cover covering the core, wherein the cover is formed from a cover composition containing, a non-petroleum based polyester resin (A-1), at least one petroleum based thermoplastic resin (A-2) selected from a binary copolymer composed of ethylene and an α,β-unsaturated carboxylic acid, a ternary copolymer composed of ethylene, an α,β-unsaturated carboxylic acid, and an α,β-unsaturated carboxylic acid ester, and their metal salt, as a resin component (A), and a compatibilizer (C) containing at least a (meth)acrylic type resin (C-1) having a polar functional group and an olefin type resin (C-2) having a polar functional group, wherein the non-petroleum based polyester resin contains a dicarboxylic acid, a diol and/or a hydroxycarboxylic acid as a constituent component, and at least one of the dicarboxylic acid, the diol and/or the hydroxycarboxylic acid is a non-petroleum based material, wherein the (meth)acrylic type resin (C-1) is (i) a polymer of a polar functional group containing (meth) acrylic type monomer alone, (ii) a copolymer having an olefin content of less than 50% by mass in the copolymer of a polar functional group-containing (meth)acrylic type monomer and a (meth)acrylic type monomer having no polar functional group and/or a monomer other than (meth)acrylic type monomer, or (iii) a copolymer of a (meth)acrylic type monomer having no polar functional group and a polar functional group-containing monomer other than (meth)acrylic type monomer, and wherein the olefin type resin (C-2) is a copolymer of an olefin and a polar functional group-containing monomer, in which the content of the olefin in the copolymer is 50% by mass or higher.