Patent ID: 9162111
Filing Date: 2015-10-20
Classification: A63B,C08L

Abstract:
1. A golf ball comprising an intermediate layer formed by injection molding a golf ball resin composition in the absence of a fatty acid and/or a metal salt thereof, wherein the resin composition comprises a resin component and (C) a zinc compound, wherein the resin component consists of (A) an ionomer resin consisting of a metal ion-neutralized product of a ternary copolymer composed of an olefin, an α,β- unsaturated carboxylic acid having 3 to 8 carbon atoms, and an α,β-unsaturated carboxylic acid ester and (B) a binary copolymer composed of an olefin and an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms and/or a ternary copolymer composed of an olefin, an α,β-unsaturated carboxylic acid having 3 to 8 carbon atoms, and an α,β-unsaturated carboxylic acid ester, wherein a content ratio ((A)/(B)) of (A) component to (B) component ranges from 50/50 to 80/20 in a mass ratio and a content of (C) component ranges from 0.1 part to 20 parts with respect to 100 parts by mass of a sum of (A) component and (B) component, and the golf ball resin composition has a melt flow rate (190° C., 2.16 kg) of 5 g/10 min or more, wherein (A) component has a melt flow rate (190° C., 2.16 kg) ranging from 0.1 g/10min to 20 g/10min, wherein (B) component has a melt flow rate (190° C., 2.16 kg) ranging from 5 g/10min to 500 g/10min, and wherein the golf ball resin composition comprises only the (C) component as a component to neutralize non-neutralized carboxyl groups existing in the (A) component and (B) component.