Patent ID: 6334819
Filing Date: 2002-01-01
Classification: A63B,B32B

Abstract:
A multi-piece solid golf ball comprising a solid core and a two-layer structure cover on the solid core consisting of a cover inner layer and a cover outer layer, whereinan adhesive layer having a thickness of 10 &mgr;m to 1.5 mm and composed mainly of a thermoplastic resin is interposed between the cover inner layer and the cover outer layer, said cover inner layer has a thickness of 0.5 to 3.0 mm and is composed mainly of an ionomer resin containing at least 15% by weight of an &agr;,&bgr;-unsaturated carboxylic acid, said cover outer layer has a thickness of 0.6 to 1.6 mm and is composed mainly of a thermoplastic elastomer exclusive of an ionomer resin, and the adhesive in said adhesive layer is selected from the group consisting of a polymer obtained by graft copolymerizing glycidyl methacrylate to an olefinic compound, a polymer obtained by random copolymerizing glycidyl methacrylate to an olefinic compound, a polymer obtained by graft copolymerizing an organic acid to an olefinic compound, and a polymer obtained by random copolymerizing an organic acid to an olefinic compound.